Difference between pages "J29D" and "MGB-61"

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{{Specs-Card
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{{Specs-Card|code=uk_70ft_mgb}}
|code=saab_j29d
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|store=7174
 
}}
 
{{About
 
| about = gift Swedish jet fighter '''{{PAGENAME}}'''
 
| usage = other versions
 
| link = J29 (Family)
 
}}
 
 
== Description ==
 
== Description ==
<!-- ''In the description, the first part should be about the history of and the creation and combat usage of the aircraft, as well as its key features. In the second part, tell the reader about the aircraft in the game. Insert a screenshot of the vehicle, so that if the novice player does not remember the vehicle by name, he will immediately understand what kind of vehicle the article is talking about.'' -->
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<!--''In the first part of the description, cover the history of the ship’s creation and military application. In the second part, tell the reader about using this ship in the game. Add a screenshot. If a beginner player has a hard time remembering vehicles by name, a picture will help them understand which ship is being discussed.''-->
 
[[File:GarageImage_{{PAGENAME}}.jpg|420px|thumb|left]]
 
[[File:GarageImage_{{PAGENAME}}.jpg|420px|thumb|left]]
 
{{break}}
 
{{break}}
The '''{{Specs|name}}''' is a gift rank {{Specs|rank}} Swedish jet fighter {{Battle-rating}}. It was introduced in [[Update 1.93 "Shark Attack"]].
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The '''{{Specs|name}}''' is a rank {{Specs|rank}} British motor gun boat {{Battle-rating|1}}. It was introduced in during the Closed Beta Test for Ground Forces before Update 1.41. It was introduced in [[Update 1.83 "Masters of the Sea"]] as part of the British fleet closed beta test.
 +
 
 +
== General info ==
 +
=== Survivability and armour ===
 +
<!--''Talk about the vehicle’s armor. Note the most well-defended and most vulnerable zones, e.g. the ammo magazine. Evaluate the composition of components and assemblies responsible for movement and maneuverability. Evaluate the survivability of the primary and secondary armament separately. Don't forget to mention the size of the crew, which plays an important role in fleet mechanics. Tips for preserving survivability should be saved for the “Use in battle” section.
 +
 
 +
If necessary, use a graphic template to show the most well-protected or most vulnerable points in the armor.''-->
 +
 
 +
MGB-61 has the following armour layout:
 +
 
 +
* [[2pdr Rolls Royce (40 mm)|2pdr Rolls Royce]] gunshield: 12.7 mm hardened armour
 +
* Hull: 40 mm, wood
 +
* Superstructure: 15 mm, wood
  
When conjuring up thoughts of fighter jets, many would initially think of a sleek, weapon-laden fast jet which would almost rival a hot-rod in the car world. When presented with the {{PAGENAME}}, most people would cock their head to the side with a puzzled look on their face. It's a good thing that fighter jets are not determined by looks alone! The {{PAGENAME}} is, for lack of a better phrase, a "wolf in sheep's clothing", initially laughed at as being the "chubby kid on the block". Once up in the air, however, it is quickly realised that this rotund little fighter is a dynamic powerhouse!
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[[File:MGB-61_internals.png|thumb|MGB-61 internals (starboard side). Note the ammo storages below the bridge and in front of the rear gun.]]
[[File:J29D_004.png|350px|thumb|left|'''{{PAGENAME}}''' in a power climb launching a [[m/49]] unguided rocket.]]
 
While many other nations were fixated on designing straight-wing aircraft, the Swedes were busy exploiting the knowledge of former Messerschmitt engineers in implementing swept wings onto their fighters. With this and other improvements, the {{PAGENAME}} was found to be pretty fast during its trials. Although it was not supersonic, it was pushing 900 km/h. It handled like a dream, being extremely quick and agile. The nose of the aircraft was bristling with four 30 mm ADEN autocannons, and various types of suspended ordnance could be outfitted, including light rockets, heavy anti-ship rockets, air-to-air rockets, and guided missiles. Sweden didn't have the money to develop aircraft specifically for a combat role, so they designed their {{PAGENAME}} to do it all and do it well. Depending on the load-out, the {{PAGENAME}} could fly like a fighter, interceptor, bomber, or a combination of the three. This functionality comes in very handy as in-game spawns can lead to a map with specific requirements and the pilot will have no problems configuring the weapons of this aircraft to fit the mission, whereas some other contemporary fighters are quite limited in their options.
 
  
If not kept in check, the {{PAGENAME}} can quickly become the bully on the block hard-charging into the battlefield, wreaking havoc and then departing without a second thought. If two fighters are headed your way, your best bet will be to take out the {{PAGENAME}} first or it will likely nab you in the rear and send you down in flames.
+
Any gun in the game will easily be able to penetrate anywhere on the boat, including the gunshield, at practically any range.  
  
== General info ==
+
MGB-61 can be hull-broken by any gun with a diameter greater than 4 inches (102 mm). Hull-break triggers when a capable gun destroys any hull compartment or the bridge, resulting in instant destruction of the rest of the boat. At MGB-61's battle rating, the only gun capable of hull-breaking her is the [[8cwt QF Mk I (114 mm)|8cwt QF Mk I]], found on {{Specs-Link|uk_dark_class}}. The ability to be hull-broken by guns larger than 4 inches is a trait that applies to the vast majority of boats in tier 1 and 2, so in that respect, MGB-61 isn't better or worse than most other boats.
=== Flight performance ===
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<!-- ''Describe how the aircraft behaves in the air. Speed, manoeuvrability, acceleration and allowable loads - these are the most important characteristics of the vehicle.'' -->
+
MGB-61's hull is split into three compartments. The first compartment starts at the bow and ends just in front of the bridge. The second starts at the bridge and ends in front of the engines. The third starts at the engines and ends at the stern. Overall, with a crew complement of 12, survivability is average.
[[File:J29D_001.png|450px|thumb|right|'''{{PAGENAME}}''' removing one wing at a time on a Me 262.]]
+
 
When flying the {{PAGENAME}}, it is hoped that enemy pilots will take one look, chuckle, and not take the rotund Swedish fighter seriously, only to learn the hard way they were wrong. The {{PAGENAME}} has the speed, agility, and ordnance to be considered a powerhouse in the sky. Being outfitted with an afterburning engine, the {{PAGENAME}} can fly upwards of 1,000 km/h and climbs up to altitude at a whipping 55 metres per second. This allows the fighter to get in and out of contested areas to engage its targets of choice. This fighter was built for speed and agility and uses these characteristics to show up other aircraft which may be faster or bulkier, sidestepping their attacks and jumping back in to nab the kill. Thanks to the way the four ADEN cannons are mounted when the {{PAGENAME}} lines up a target and fires, it is almost like a 30 mm shotgun being fired off. A tight spread of 30 mm rounds heads downfield, and when impacting another aircraft, rarely is there enough left of the plane to fly.
+
MGB-61 has 4 ammunition storages, one below each of the two [[Vickers Mk.V (12.7 mm)]] mounts and two in front of the rear [[2pdr Rolls Royce (40 mm)]] mount. Destroying these will also destroy the rest of the boat. In practice, though, this almost never happens, since they are relatively small targets and because most guns at this battle rating are either machine guns or low-calibre autocannons which require many hits to destroy ammo storages. It's often both quicker and easier to target the hull compartments and knock out the crew.
  
The {{PAGENAME}} is as comfortable up at altitude as it is down at just above ground level. The fighter is a stable platform when it comes to ground attack, with good acceleration characteristics when the time comes to peel off the ground targets and manoeuvre back up to altitude with the other fighters. Being specially designed to reduce as much drag as possible, the swept-back wings help extend the breakage limits of the wings, especially when this fighter is in a dive.
+
=== Mobility ===
 +
<!--''Write about the ship’s mobility. Evaluate its power and maneuverability, rudder rerouting speed, stopping speed at full tilt, with its maximum forward speed and reverse speed.''-->
  
 
{| class="wikitable" style="text-align:center"
 
{| class="wikitable" style="text-align:center"
! rowspan="2" | Characteristics
+
! colspan="6" | '''Mobility Characteristics'''
! colspan="2" | Max Speed<br>(km/h at 0 m - sea level)
 
! rowspan="2" | Max altitude<br>(meters)
 
! colspan="2" | Turn time<br>(seconds)
 
! colspan="2" | Rate of climb<br>(meters/second)
 
! rowspan="2" | Take-off run<br>(meters)
 
 
|-
 
|-
! AB !! RB !! AB !! RB !! AB !! RB
+
! rowspan="2" | Game Mode
 +
! rowspan="2" | Upgrade Status
 +
! colspan="2" | Maximum Speed (km/h)
 +
! rowspan="2" | {{Annotation|Turn Time (s)|Time needed to complete a 360° turn at maximum speed}}
 +
! rowspan="2" | {{Annotation|Turn Radius (m)|At maximum speed}}
 
|-
 
|-
! Stock
+
! rowspan="1" | Forward
| 1,032 || 1,027 || rowspan="2" | {{Specs|ceiling}} || 29.2 || 30.8 || 48.8 || 45.3 || rowspan="2" | 800
+
! rowspan="1" | Reverse
 
|-
 
|-
! Upgraded
+
| rowspan="2" | {{Annotation|AB|Arcade Battles}}
| 1,048 || 1,040 || 28.7 || 29.0 || 70.6 || 59.0
+
| {{Annotation|Stock|All modifications removed}} || 73 || 20 || ~23.20 || ~42.05
 
|-
 
|-
|}
+
| {{Annotation|Upgraded|All modifications installed}} || 100 || 27 || ~15.41 || ~26.57
[[File:J29D_005.png|450px|thumb|right|'''{{PAGENAME}}''' taking on a target-bound Canberra B (I) Mk 6]]
 
==== Details ====
 
{| class="wikitable" style="text-align:center"
 
 
|-
 
|-
! colspan="6" | Features
+
| rowspan="2" | {{Annotation|RB|Realistic Battles}}/{{Annotation|SB|Simulator Battles}}
 +
| {{Annotation|Stock|All modifications removed}} || 64 || 17 || ~25.64 || ~47.61
 
|-
 
|-
! Combat flaps !! Take-off flaps !! Landing flaps !! Air brakes !! Arrestor gear !! Drogue chute
+
| {{Annotation|Upgraded|All modifications installed}} || 74 || 20 || ~21.18 || ~38.39
|-
 
| || || || || X || X    <!-- ✓ -->
 
 
|-
 
|-
 
|}
 
|}
 +
 +
When moving forwards at high speeds, the bow will lift out of the water. This creates a blind spot directly in front of the boat where the twin 12.7 mm Vickers Mk.V mounts can't depress far enough to engage surface targets.
 +
 +
MGB-61 has a displacement of 34 tons.
 +
 +
== Armament ==
 +
=== Primary armament ===
 +
{{main|Vickers Mk.V (12.7 mm)}}
 +
<!--''Provide information about the characteristics of the primary armament. Evaluate their efficacy in battle based on their reload speed, ballistics and the capacity of their shells.
 +
 +
Broadly describe the ammunition available for the primary armament, and provide recommendations on how to use it and which ammunition to choose.''-->
 +
 +
In her primary armament group, MGB-61 has four 12.7 mm Vickers Mk.V guns in two twin mounts, mounted on either side of the bridge. Each mount as 4,000 rounds of ammunition available, 2,000 rounds per gun, for a total of 8,000 rounds. Each mount can traverse horizontally at a rate of 75°/s and vertically at a rate of 75°/s. Each gun has a belt capacity of 200 rounds with a stated rate of fire of 600 rounds/min, though in actuality, for both mounts, the gun on the gunner's left side fires faster, at around 685 rounds/min, firing all 200 of its rounds in the time it takes the right side gun to fire about 175 rounds. With a stock crew, the guns can be reloaded in 13 seconds; with an aced crew, they can be reloaded in 10 seconds. Their maximum range against surface targets is roughly 2 km.
  
 
{| class="wikitable" style="text-align:center"
 
{| class="wikitable" style="text-align:center"
 +
! colspan="2" | '''Guidance for the Secondary Gun Turret'''
 
|-
 
|-
! colspan="7" | Limits
+
! Horizontal !! Vertical
 
|-
 
|-
! rowspan="2" | Wings (km/h)
+
| ±180° || -10°/+70°
! rowspan="2" | Gear (km/h)
 
! colspan="3" | Flaps (km/h)
 
! colspan="2" | Max Static G
 
 
|-
 
|-
! Combat !! Take-off !! Landing !! + !! -
+
|}
 +
 
 +
There are three choices of ammunition available:
 +
 
 +
* Universal: {{Annotation|T|Tracer}}/{{Annotation|AP|Armour-piercing}}/{{Annotation|I|Incendiary}}
 +
 
 +
* 12.7 mm I: {{Annotation|T|Tracer}}/{{Annotation|I|Incendiary}}/{{Annotation|I|Incendiary}}/{{Annotation|I|Incendiary}}/{{Annotation|I|Incendiary}}
 +
 
 +
* 12.7 mm API: {{Annotation|T|Tracer}}/{{Annotation|AP|Armour-piercing}}/{{Annotation|I|Incendiary}}/{{Annotation|AP|Armour-piercing}}
 +
 
 +
{| class="wikitable sortable" style="text-align:center" width="100%"
 +
! colspan="7" | '''Penetration Statistics'''
 
|-
 
|-
| {{Specs|destruction|body}} || {{Specs|destruction|gear}} || 520 || 520 || 320 || ~11 || ~5
+
! rowspan="2" data-sort-type="text" | Ammunition
 +
! colspan="6" | '''Penetration @ 0° Angle of Attack (mm)'''
 
|-
 
|-
|}
+
! 10 m !! 100 m !! 500 m !! 1,000 m !! 1,500 m !! 2,000 m
 
 
{| class="wikitable" style="text-align:center"
 
 
|-
 
|-
! colspan="4" | Optimal velocities (km/h)
+
| Universal || 27 || 26 || 23 || 20 || 18 || 16
 
|-
 
|-
! Ailerons !! Rudder !! Elevators !! Radiator
+
| 12.7 mm I || 22 || 21 || 18 || 16 || 14 || 12
 
|-
 
|-
| < 650 || < 640 || < 450 || N/A
+
| 12.7 mm API || 27 || 26 || 23 || 20 || 18 || 16
 
|-
 
|-
 
|}
 
|}
  
==== Engine performance ====
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=== Secondary armament ===
 +
{{main|2pdr Rolls Royce (40 mm)}}
 +
<!--''Some ships are fitted with weapons of various calibers. Secondary armament is defined by the weapon chosen with the control <code>Select secondary weapon</code>. Evaluate the secondary armament and give advice on how to use them. Describe the ammunition available for the secondary armament. Provide recommendations on how to use them and which ammunition to choose. Remember that anti-air armament, even heavy caliber weapons, belong in the next section.''-->
 +
 
 +
In her secondary armament group, MGB-61 has one 40 mm 2pdr Rolls Royce semi-automatic cannon in a single mount, mounted centerline on the stern. It has 1,200 rounds of ammunition available. The mount can traverse horizontally at a rate of 45°/s and vertically at a rate of 55°/s. The gun has a magazine capacity of 4 rounds and has a rate of fire of 231 rounds/min. With a stock crew, it can be reloaded in 1.7 seconds; with an aced crew, it can be reloaded in 0.85 seconds. Its maximum range against surface targets is roughly 3 km.
 +
 
 
{| class="wikitable" style="text-align:center"
 
{| class="wikitable" style="text-align:center"
 +
! colspan="2" | '''Guidance for the Secondary Gun Turret'''
 
|-
 
|-
! colspan="3" | Engine
+
! Horizontal !! Vertical
! colspan="4" | Aircraft mass
 
 
|-
 
|-
! colspan="2" | Engine name || Number
+
| ±151° || -12°/+60°
! colspan="2" | Empty mass || colspan="2" | Wing loading (full fuel)
 
 
|-
 
|-
| colspan="2" | Svenska Flygmotor RM2B || 1
+
|}
| colspan="2" | 4,920 kg || colspan="2" | 282 kg/m<sup>2</sup>
+
 
|-
+
There are three choices of ammunition available:
! colspan="3" | Engine characteristics
+
 
! colspan="3" | Mass with fuel (no weapons load) || rowspan="2" | Max Takeoff<br />Weight
+
* Universal: {{Annotation|HEF|High-explosive fragmentation}}/{{Annotation|AP-T|Armour-piercing tracer}}/{{Annotation|HEF|High-explosive fragmentation}}/{{Annotation|AP-T|Armour-piercing tracer}}
|-
+
 
! Weight (each) || colspan="2" | Type
+
* 40 mm HE: {{Annotation|HEF|High-explosive fragmentation}}/{{Annotation|HEF|High-explosive fragmentation}}/{{Annotation|HEF|High-explosive fragmentation}}/{{Annotation|AP-T|Armour-piercing tracer}}
! 8m fuel || 20m fuel || 28m fuel
+
 
 +
* 40 mm AP: {{Annotation|AP-T|Armour-piercing tracer}}/{{Annotation|AP-T|Armour-piercing tracer}}/{{Annotation|AP-T|Armour-piercing tracer}}/{{Annotation|HEF|High-explosive fragmentation}}
 +
 
 +
{| class="wikitable sortable" style="text-align:center" width="100%"
 +
! colspan="7" | '''Penetration Statistics'''
 
|-
 
|-
| 1,150 kg || colspan="2" | Afterburning centrifugal-flow turbojet
+
! rowspan="2" data-sort-type="text" | Ammunition
| 5,398 kg || 6,136 kg || 6,627 kg || 7,080 kg
+
! colspan="6" | '''Penetration @ 0° Angle of Attack (mm)'''
 
|-
 
|-
! colspan="3" | {{Annotation|Maximum engine thrust @ 0 m (RB / SB)|The maximum thrust produced by each engine, while mounted in the aircraft. NOTE: Thrust varies significantly depending on speed & altitude.}}
+
! 10 m !! 100 m !! 500 m !! 1,000 m !! 1,500 m !! 2,000 m
! colspan="4" | Thrust to weight ratio @ 0 m (WEP)
 
 
|-
 
|-
! Condition || 100% || WEP
+
| Universal || 60 || 57 || 50 || 43 || 38 || 34
! 8m fuel || 20m fuel || 28m fuel || MTOW
 
 
|-
 
|-
| ''Stationary'' || 2,070 kgf || 2,881 kgf
+
| 40 mm HE || 60 || 57 || 50 || 43 || 38 || 34
| 0.53 || 0.47 || 0.43 || 0.41
 
 
|-
 
|-
| ''Optimal'' || 2,070 kgf<br />(0 km/h) || 3,001 kgf<br />(0 km/h)
+
| 40 mm AP || 60 || 57 || 50 || 43 || 38 || 34
| 0.55 || 0.49 || 0.45 || 0.42
 
 
|-
 
|-
 
|}
 
|}
  
=== Survivability and armour ===
+
=== Special armament ===
<!-- ''Examine the survivability of the aircraft. Note how vulnerable the structure is and how secure the pilot is, whether the fuel tanks are armoured, etc. Describe the armour, if there is any, and also mention the vulnerability of other critical aircraft systems.'' -->
+
{{main|Mk.VII depth charge}}
 +
<!--''Depth charges, mines, rocket launchers and missiles are also effective in skilled hands and can be an unexpected surprise for an opponent. Evaluate the ammunition of this type of armament and rate its performance in combat.''-->
 +
 
 +
[[File:MGB-61_DC_order.png|thumb|Mk.VII depth charges numbered 1-2 according to the order in which they're dropped (click to expand).]]
  
;Armour
+
MGB-61 can carry two Mk.VII depth charges mounted amidships, one on each side facing outwards. The depth charges are dropped one at a time and drop in this order (see the image):
  
* 64 mm bulletproof canopy windscreen
+
# Starboard side
* 10 mm steel plate behind pilot's seat
+
# Portside
* 10 mm steel plate in the nose
 
  
The stout little {{PAGENAME}} is a sneaky little fighter which might be underestimated during a head-on. A 64 mm bulletproof windscreen is in place, which, since it is sloped, provides 165 mm total protection, allowing the pilot to have a greater chance of survival in a head-on. However, unless highly experienced, pilots should avoid head-ons, especially against aircraft such as the [[Super Mystere B2]] and the [[G.91 YS]] which also feature 30 mm DEFA 552 cannons. Make sure to avoid the B2 as well, as the AA.20 air-to-air guided rockets will make the {{PAGENAME}} have a hard time standing up to this aircraft.
+
Before spawning, the detonation time delay can be set anywhere between 3 seconds and 10 seconds.
  
== Armaments ==
+
{| class="wikitable" style="text-align:center"
=== Offensive armament ===
+
! colspan="4" | '''Depth Charge Characteristics'''
<!-- ''Describe the offensive armament of the aircraft, if any. Describe how effective the cannons and machine guns are in a battle, and also what belts or drums are better to use. If there is no offensive weaponry, delete this subsection.'' -->
+
|-
{{main|Akan m/55 (30 mm)}}
+
! Mass (kg)
 +
! Explosive Type
 +
! Explosive Mass (kg)
 +
! TNT Equivalent (kg)
 +
|-
 +
| 196 || TNT || 130 || 130
 +
|}
 +
 
 +
== Usage in battles ==
 +
<!--''Describe the technique of using this ship, the characteristics of her use in a team and tips on strategy. Abstain from writing an entire guide – don’t get try to provide a single point of view, but give the reader food for thought. Talk about the most dangerous opponents for this vehicle and provide recommendations on fighting them. If necessary, note the specifics of playing with this vehicle in various modes (AB, RB, SB).''-->
  
The '''''{{PAGENAME}}''''' is armed with:
+
MGB-61's primary armament consists of four 12.7 mm Vickers Mk.V machineguns in two twin mounts. With all four on target, they have a very good damage output, roughly comparable to the damage output of a twin 20 mm cannon mount. However, when moving at high speeds, the bow of the boat will lift out of the water by quite a bit. This creates a blind spot in front of the boat for several hundred meters where one or both of the Vickers Mk.V mounts won't be able to depress their guns far enough to get shots on target. When on the move, either keep the enemy at an angle in front of the boat or keep them directly behind the boat where there's no.
  
* 4 x 30 mm Akan m/55 cannons, nose-mounted (100 rpg = 400 total)
+
The 12.7 mm Vickers Mk.V gun has a rather large belt capacity of 200 round, and, with a rate of fire of either 600 or 685 rounds per minute, it can fire for 20 or 17.5 seconds. Compared to her cannon-armed counterparts, MGB-61 can sustain fire for much longer, though this comes at the cost of a very long reload, between 13 and 10 seconds depending on the crew level. Running out of ammunition mid-engagement is almost always a death sentence due to the long reload. Because of this, always fire off any remaining ammunition after engagements if there are less than 300 or so rounds of ammunition between the four guns.
  
The {{PAGENAME}}, like many of the fighters of the time, got away from machine guns and was outfitted with harder-hitting autocannons, in this case, 30 mm ADEN cannons. The cannons are clustered around the central air-intake of the aircraft, resulting in optimal fire control as convergence is not an issue. However, the pilot must still correct for bullet drop for the 30 mm rounds. The four ADEN cannons only have 100 rounds per gun, requiring the pilot to exercise trigger control so not to waste ammunition. With these harder hitting rounds, however, only a quick burst is needed to send an aircraft down in a flaming heap.[[File:J29D_006.jpg|400px|thumb|right|'''{{PAGENAME}}''' firing off a [[m/49]] unguided rocket.]]
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MGB-61's secondary gun, a 40 mm Rolls Royce cannon, hits harder than the 12.7 mm machine guns. It's particularly useful against larger boats with its powerful HE rounds and is practically a necessity against certain armoured targets, since the machine guns can only penetrate a maximum of 22 mm of armour; with an AP rounds capable of penetrating 60 mm of armour, it is more than enough to deal with any armoured targets MGB-61 might face. The 40 mm cannon is also useful for shooting at enemies outside of the machine guns' maximum range, roughly 2 km. All that said, the 40 mm cannon actually has a lower damage output against most targets than the four machine guns because of its lower rate of fire and because it has a ~1 second reload every four rounds. The gun also can't rotate a full 360°, making it less versatile than the machine guns. Outside of the cases mentioned above, the machine guns will generally do much better. Still, the 40 mm can be switched to in a pinch if really needed, for example, if the machine guns are reloading.
  
=== Suspended armament ===
+
The 12.7 mm Vickers Mk.V mounts can fire in all directions except in a ~117° arc towards the opposite mount. There's also a blind spot for ~275 m directly behind the boat where both guns can't fire. When on the move, the rear blind spot is virtually eliminated, though a new blind spot in front of the boat is created. Overall, firing arcs are poor. The rear 40 mm Rolls Royce mount, on the other hand, has very good firing arcs, able to fire in all directions except for a ~62° arc centred towards the front of the boat.
<!-- ''Describe the aircraft's suspended armament: additional cannons under the wings, bombs, rockets and torpedoes. This section is especially important for bombers and attackers. If there is no suspended weaponry remove this subsection.'' -->
 
{{main|m/49|m/49A|m/51|m/55}}
 
  
The '''''{{PAGENAME}}''''' can be outfitted with the following ordnance:
+
;Ammunition Choices
  
* Without load
+
For the 12.7 mm Vickers Mk.V, the 12.7 mm I belt is slightly better against both aircraft and surface targets compared to the 12.7 mm API belt. Though the AP rounds penetrate 5 mm more armour at point-blank than the I rounds, with such a small difference, the AP rounds won't be able to penetrate any armour that the I rounds can't. That said, the damage output difference between the I and API belt is so little that it's largely down to preference which to use.
* 24 x 7,5 cm srak m/55 rockets
 
* 14 x 14,5 cm psrak m/49A rockets
 
* 14 x 15 cm srak m/51 rockets
 
* 4 x 18 cm hprak m/49 rockets
 
  
== Usage in battles ==
+
For the 40 mm 2pdr Rolls Royce cannon, the best ammunition choice is the 40 mm HE because it has the highest ratio of HE rounds to AP rounds, meaning that it will be the most effective against both aircraft and surface targets. The 40 mm HE belt should be the main ammunition choice, but a few of the 40 mm AP belt should also be taken into battle for use against armoured targets. The AP belt is also useful against enemies heading directly bow-in. In this situation, HE rounds will only damage the bow compartment and, if that compartment is already destroyed, will deal only minimal damage. AP rounds can pass through the bow compartment and deal damage to the rest of the vessel.
<!--''Describe the tactics of playing in the vehicle, the features of using vehicles in the team and advice on tactics. Refrain from creating a "guide" - do not impose a single point of view but give the reader food for thought. Describe the most dangerous enemies and give recommendations on fighting them. If necessary, note the specifics of the game in different modes (AB, RB, SB).''-->
 
  
Although the J29D is a fast jet capable of reaching high speed, at the start it can be pretty slow. The J29D has the chance to fight supersonic jets at its battle rating which it can't hunt down by itself. As such, the J29D is best used in teamwork with other jets to either catch up to the enemy plane or make them do manoeuvres to bleed some speed so the J29D can catch up. If faced with subsonic jets, it can keep up with them and stay on its tail thanks to its manoeuvrability. For the daredevils, the J29D has an excellent armament of choice to do head-ons with. These load outs would be best put to use if no teammate around to help you fight the enemy. Because the J29D has slow acceleration at the start of the game, it can have a hard time intercepting enemies at first. As the battle progresses and you will have worked up speed, this task will be made much easier.
+
;Depth Charges
  
The J29D can also be used as an excellent ground attacker for more experienced players who are used to aiming unguided rockets. It has a variety of rockets, allowing you to sufficiently take out a wide variety of targets (light, medium, heavy, etc.). With most loads having more than 10 rockets, an experienced player can take out a few ground targets each spawn. Along with the rockets, the four 30 mm guns, given the proper belt choice, can inflict heavy damage upon soft and somewhat hard targets as well.
+
Being anti-submarine weapons and with the present lack of submarines in the game, there is practically no reason to use them. While they can be used against surface targets, this is extremely situational. Sailing up right next to a slower target and dropping a depth charge can lead to some success, though again, this is very situational. If attempting this, remember the order in which the depth charges drop and that there is no reason to use any depth charge activation time setting above the minimum 3 seconds, since higher delay times means the depth charge will sink further, and thus away, from the target. Again, it should be reiterated that this is very situational.  
  
Even as an excellent fighter, the J92D has dangerous enemies, mainly high-subsonic jets like MiG-17 and anti-air missile firing jets like G.91 YS and Swift F.7.  
+
There is no practical reason to take them into battle, especially since, if they're not dropped, they essentially become unarmoured ammo racks.  
  
 
=== Modules ===
 
=== Modules ===
{| class="wikitable"
+
 
 +
{| class="wikitable" style="text-align:center"
 
! Tier
 
! Tier
! colspan="2" | Flight performance
+
! colspan="1" | Seakeeping
! Survivability
+
! colspan="2" | Unsinkability
! colspan="2" | Weaponry
+
! colspan="3" | Firepower
 
|-
 
|-
 
| I
 
| I
| Fuselage repair
+
| Dry-Docking
|
+
| Tool Set ||
|
+
| 40 mm HE || 12.7 mm I ||
| Offensive 30 mm
 
| m/55
 
 
|-
 
|-
 
| II
 
| II
|
+
| Rudder Replacement
| Compressor
+
| Fire Protection System || Smokescreen
| Airframe
+
| 40 mm AP || 12.7 mm API || Auxiliary Armament Targeting
|
 
| m/49A
 
 
|-
 
|-
 
| III
 
| III
| Wings repair
+
| Propeller Replacement
|
+
|  ||  
|
+
| Improved Rangefinder || Depth Charges || {{Annotation|Primary Armament Targeting|Requires 'Auxiliary Armament Targeting'}}
| New 30 mm cannons
 
| m/51
 
 
|-
 
|-
 
| IV
 
| IV
| G-suit
+
| Engine Maintenance
| Engine
+
| New Pumps ||
| Cover
+
| Artillery Support || ||  
|
 
| m/49
 
 
|-
 
|-
 
|}
 
|}
  
 
=== Pros and cons ===
 
=== Pros and cons ===
<!-- ''Summarise and briefly evaluate the vehicle in terms of its characteristics and combat effectiveness. Mark its pros and cons in the bulleted list. Try not to use more than 6 points for each of the characteristics. Avoid using categorical definitions such as "bad", "good" and the like - use substitutions with softer forms such as "inadequate" and "effective".'' -->
+
<!--''Summarize and briefly evaluate the vehicle in terms of its characteristics and combat effectiveness. Mark its pros and cons in the bulleted list. Try not to use more than 6 points for each of the characteristics. Avoid using categorical definitions such as "bad", "good" and the like - they have a substitution in the form of softer "inadequate", "effective".''-->
  
 
'''Pros:'''
 
'''Pros:'''
  
* Fast and agile
+
* 12.7 mm Vickers Mk.V: high rate of fire, large belt capacity, good damage output, can rotate 360°
* Multi-role aircraft (fighter/attacker/interceptor)
+
* 40 mm 2pdr Rolls Royce: very quick reload, high penetration with AP rounds, good firing arcs
* Four nose-mounted 30 mm Akan autocannons
+
* Decent mobility
* Accelerates well in a climb
 
  
 
'''Cons:'''
 
'''Cons:'''
  
* Loses its agility at high speeds
+
* Blind spot directly in front when moving at high speeds
* Tends to up-tiered against planes which are faster
+
* 12.7 mm Vickers Mk.V: long reload, poor firing arcs
* Bleeds through ammunition quickly - requires trigger patience
+
* 40 mm 2pdr Rolls Royce: cannot fire directly forwards, small magazine capacity, cannot rotate 360°
  
 
== History ==
 
== History ==
<!-- ''Describe the history of the creation and combat usage of the aircraft in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the vehicle and adding a block "/History" (example: <nowiki>https://wiki.warthunder.com/(Vehicle-name)/History</nowiki>) and add a link to it here using the <code>main</code> template. Be sure to reference text and sources by using <code><nowiki><ref></ref></nowiki></code>, as well as adding them at the end of the article with <code><nowiki><references /></nowiki></code>. This section may also include the vehicle's dev blog entry (if applicable) and the in-game encyclopedia description (under <code><nowiki>=== In-game description ===</nowiki></code>, also if applicable).'' -->
+
<!--''Describe the history of the creation and combat usage of the ship in more detail than in the introduction. If the historical reference turns out to be too big, take it to a separate article, taking a link to an article about the vehicle and adding a block "/ History" (example: <nowiki>https://wiki.warthunder.com/(Vehicle-name)/History</nowiki>) and add a link to it here using the <code>main</code> template. Be sure to reference text and sources by using <code><nowiki><ref></nowiki></code>, as well as adding them at the end of the article.''-->
[[File:J29D_002.jpg|450px|thumb|right|'''{{PAGENAME}}''' cruising the sky looking for targets.]]
 
Following World War II, Sweden felt that they had fallen behind in technological advancements when it came to military aircraft and strove to rectify the situation while beefing up they considered was their current weak air defence. Jet propulsion technology was cutting-edge and Sweden was not to be left out. In 1945, Sweden's leading aeronautical firm began to work on design ideas of potential future fighter aircraft. Through a design contest, a clear winner emerged which was a barrel-shaped fighter which promised to be the faster and more agile of the proposed aircraft, this fighter was given the codename "R 1001".
 
  
Initially designed with a straight wing, newly acquired German research data and even some Messerschmitt engineers themselves who fled to Sweden made the recommended change to wings with a 25-degree sweep, which highly stabilized and reduced the aircraft's drag as it approached the sound barrier. Adding to the aerodynamics of the wing shape, it was decided to not house the landing gear in the wings, but instead to have them retract into the fuselage of the aircraft. Wind-tunnel testing led to the refinement of wings and the fuselage of the aircraft. A straight-through airflow (from nose to engine to exhaust) was determined to be the best and easiest course of action for this aircraft and though initially, the de Havilland Goblin turbojet engine was to be used, it was determined that the newer de Havilland Ghost engine was already configured for a central circular air intake and would require the least amount of modifications to implement.
+
Over the course of the Second World War, British Power Boat Company (BPB), based at Hythe, manufactured three motor anti-submarine boat (MASB) designs which were essentially three differently sized versions of the same overall design, as follows: a 60-foot version, consisting of MASBs 1-5; a 63-foot version, consisting of MASBs 22-45; and a 70-foot version, consisting of MASBs 6-21, 46, and 50-67). These boats were originally designed as motor torpedo boats (MTBs), but with the increasing threat of German U-Boats, those ordered by the Royal Navy were ordered as MASBs, their torpedo tubes replaced with depth charge racks and ASDIC equipment.
  
Though through testing many faults and problems developed, each of these was addressed and mitigated so that in September 1948, the Saab 29 prototype was ready for its initial flight. The test pilot chosen for this flight was Englishman, Squadron Leader Robert A. "Bob" Moore. The test flight lasted for a half of an hour and after a successful landing, Moore commented on the aircraft stating that "on the ground, it's an ugly duckling – in the air, a swift." Like many aircraft which pick up a nick-name due to a specific feature or shape, the J 29 became known as the "Flygande Tunnan" (''The Flying Barrel'') or just "Tunnan" for short. Initially thought of as degrading, the nick-name Tunnan became the officially adopted name for this fighter.
+
The 70-foot boats, in particular, had a standard displacement of around 30 tons, with a full displacement of up to 38 tons, depending on the boat. They had a length of 70 feet (21.3 m), a beam of 16 feet 7 inches (5.05 m), and a draught of around 3 feet (~1 m) depending on the boat. The boats were powered as follows:
  
Starting in 1948, production began and ran through 1956 when all-in-all, five variants of the J 29 (J 29A, J 29B, S 29C, J 29E, and the J 29F) were produced and put into active service. A total of 661 Tunnans were rolled off of the assembly room floor which over the years and out of all of the Saab aircraft produced, was the largest production run for Saab.
+
* MASBs 6-21: ordered by the Royal Navy as MASBs, all completed throughout 1940 and 1941. These were originally planned to be powered by Rolls Royce petrol engines. However, these engines became reserved only for Hurricane and Spitfire fighter aircraft by the time the boats were built. Instead, they were powered by two weaker Napier Sea Lion petrol engines driving two shafts and could only achieve 23 knots. In 1942, they received stronger Packard petrol engines and could achieve 38 knots.
  
The J 29 is the first Swedish aircraft to see combat. In September 1961, after the United Nations asked for military support, five J 29Bs were stationed in the Republic of Congo to contribute to a UN peacekeeping mission (ONUC) in the region. The five J 29Bs were later reinforced by four more J 29Bs and two S 29C reconnaissance planes in 1962. No aircraft were lost during the ONUC despite large amounts of ground fire. When the ONUC was terminated in 1964, some of the Swedish aircraft were destroyed at their base as they were no longer needed at home and the cost to bring them home was deemed excessive.
+
* MASB 46: ordered by the Royal Netherlands Navy as an MTB. With the capitulation of the Netherlands in May 1940 before her completion, she was requisitioned by the Royal Navy in July 1940 and completed as a MASB on 13th July 1941. MASB 46 was powered by three Rolls Royce petrol engines driving three shafts and could achieve 42.5 knots.
  
===[[wt:en/news/6444-development-swedish-aircraft-in-war-thunder-saab-j29d-jet-powered-fighter-en|Devblog]]===
+
* MASBs 50-67: ordered by the French Navy as MTBs. With the capitulation of France in June 1940 before the completion of most of the boats, they were requisitioned by the Royal Navy in July 1940 and completed as a MASB throughout 1940 and 1941. MASBs 50-67 were powered by three Isotta-Fraschini engines driving three shafts and could achieve 40 knots.
  
While Sweden traditionally imported a great deal of military tech, including in its aircraft, Swedish aeronautical engineers nevertheless developed and built combat aircraft of their own design. Like the leading world powers, in the immediate post-war years Sweden focused its research capabilities on jet-powered aircraft. Even before the outbreak of World War II, research into jet engines was already taking place in Sweden, and the war gave industry experts the opportunity to acquire priceless experience studying the progress made by other countries, Germany in particular.
+
Around 1941, to counter the more heavily armed German E-Boats, the Royal Navy converted most of their MASBs, including all of the BPB 70-foot MASBs, into motor gun boats (MGBs). During this time, the BPB 70-foot boats were redesignated MGBs 6-21, 46, and 50-67 and were refitted with a standardized armament consisting of 2-pdr aft gun and two twin .50 calibre machine gun mounts on either side of the bridge.
  
At the beginning of 1945, a project to build the first jet-powered fighter was born deep in SAAB headquarters. Immediately after the end of the war, Swedes bought the license to produce turbojet engines from the British company de Havilland, and they began converting their J-21 piston-engine fighters to jet-engine fighters. With the arrival of the new Ghost engine from the Brits and promising research into swept wings, SAAB began developing a fundamentally new kind of fighter, initially planned to be fitted with a jet engine. Within a short time, the Swedish Air Force received the J29 Tunnan. Named after the Swedish word for "barrel", based on its shape.
+
MASB-61 was one of the ex-French BPB 70-foot boats. She was requisitioned by the Royal Navy in July 1940 and completed on 12th April 1941. In January 1940, she was refitted as a motor gun boat and redesignated as MGB-61. MGB-61 was commanded by the following:
  
The Tunnan was an awkward-looking machine, but one with superb flight characteristics for the time, enabled by its swept wings. Judge for yourselves: successful testing took place in 1948, followed by mass production in 1951, and by 1954 the J29B modification set the world speed record in a closed circuit. That's impressive!
+
* Lt. P.N. Howes, RN: December 1940 to August 1941
  
== Media ==
+
* Lt. I.R. Griffiths, RN: August 1941 to December 1941
<!-- ''Excellent additions to the article would be video guides, screenshots from the game, and photos.'' -->
 
  
;Images
+
* T/Lt. D.P. James, RNVR: December 1941 to July 1942
<div><ul>
 
<li style="display: inline-block;"> [[File:J29D_WTWallpaper_001.jpg|thumb|none|250px|]] </li>
 
<li style="display: inline-block;"> [[File:J29D_WTWallpaper_002.jpg|thumb|none|250px|]] </li>
 
<li style="display: inline-block;"> [[File:J29D_WTWallpaper_003.jpg|thumb|none|250px|]] </li>
 
<li style="display: inline-block;"> [[File:J29D_WTWallpaper_004.jpg|thumb|none|250px|]] </li>
 
<li style="display: inline-block;"> [[File:J29D_WTWallpaper_005.jpg|thumb|none|250px|]] </li>
 
<li style="display: inline-block;"> [[File:J29D_WTWallpaper_006.jpg|thumb|none|250px|]] </li>
 
</ul></div>
 
  
;Videos
+
* T/Lt. J. Collins, RNVR: July 1942 to August 1943
{{Youtube-gallery|YD22i7Y8wHg|'''Saab 29 Tunnan''' - ''jaglavaksoldier''|Xd9m6rPtN3U|'''The Shooting Range #172''' - ''Pages of History'' section at 04:57 discusses the Saab J29 Tunnan.|hpPYamqFsO8|'''Premium Vehicles: SAAB J-29D''' - ''War Thunder Wiki''}}
 
{{break}}
 
  
== See also ==
+
MGB-61 served with the 6th MGB Flotilla with HMS Beehive at Felixstowe from 1941 to 1943. She was scrapped in February 1945.
<!-- ''Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:''
 
* ''reference to the series of the aircraft;''
 
* ''links to approximate analogues of other nations and research trees.'' -->
 
  
;Other variants
+
== Media ==
 +
<!--''An excellent addition to the article will be video guides, as well as screenshots from the game and photos.''-->
  
* [[J29A]]
+
<div class="portale" align="center">
* [[J/A29B]]
+
{| class="catlist" frame="box" style="background: #efefef;" align="center"
* [[J29F]]
+
|<span style="white-space:nowrap;">[[File:GEN_LIVE_WT_1_HPL.jpg|510px|link=https://live.warthunder.com/feed/camouflages/?vehicleCountry=britain&vehicleType=ship&vehicleClass=gun_boat&vehicle=uk_70ft_mgb|]]</span> ||
 +
|-
 +
|}
 +
</div>
 +
 
 +
== See also ==
 +
<!--''Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:''
  
;Comparable aircraft
+
* ''reference to the series of the ship;''
 +
* ''links to approximate analogues of other nations and research trees.''-->
  
* [[M.D.450B Ouragan]]
+
* {{Specs-Link|uk_fairmile_a_ml100}}
* [[Super Mystere B2]]
+
* {{Specs-Link|uk_dark_class}}
* [[Hunter F 1]]
 
* [[MiG-9]]
 
* [[MiG-15]]
 
* [[F-86 (Family)|F-86]]
 
* [[La-15]]
 
  
 
== External links ==
 
== External links ==
<!-- ''Paste links to sources and external resources, such as:''
+
<!--''Paste links to sources and external resources, such as:''
 +
 
 
* ''topic on the official game forum;''
 
* ''topic on the official game forum;''
* ''encyclopedia page on the aircraft;''
+
* ''encyclopedia page on ship;''
* ''other literature.'' -->
+
* ''other literature.''-->
 +
 
 +
* [http://cfv.org.uk/research/boat/database Coastal Forces Veterans - Boat Database]
 +
* [https://www.unithistories.com/units_british/RN_CoastalForces.html#MGB%20Boats unithistories.com - Royal Navy Coastal Forces 1940-1945]
 +
* [http://www.naval-history.net/WW2BritishLosses3Coastal.htm naval-history.net - British vessels lost at sea in World War 2 - MGB, MTB, SGB, ML, etc] - originally published in British Vessels Lost at Sea, 1935-45, His Majesty's Stationary Office, 1947
 +
* [http://www.navypedia.org/ships/uk/brit_c_f_mgb6.htm NAVYPEDIA - MGB6 motor gun boats (35, 1939 - 1941)]
 +
* [https://uboat.net/allies/warships/class.html?ID=671&navy=HMS uboat.net - BPB 70 feet-type (ex: French) class]
 +
* [https://d-dayrevisited.co.uk/projects/masb-27-restoration/ D-Day Revisited - MASB 27 Restoration]
 +
* [https://www.yalumba.co.uk/Framesets/British%20Power%20Boat%20Co%20-%20Page%204,%20MGBs.html yalumba.co.uk - British Power Boat Co Page 4]
 +
* [http://www.coastal-forces.org.uk/boats.html Coastal Forces Heritage Trust - Boats]
 +
 
 +
==References==
 +
 
 +
===Bibliography===
  
* [[wt:en/news/6444-development-swedish-aircraft-in-war-thunder-saab-j29d-jet-powered-fighter-en|[Devblog] SAAB J 29D Jet Powered Fighter]]
+
* Konstam, Angus (2010). ''British Motor Gun Boat 1939–45''. Osprey Publishing Ltd. ISBN 978-1-84908-077-4.
* [https://www.militaryfactory.com/aircraft/detail.asp?aircraft_id=224| (militaryfactory.com website) - Saab J29 Tunnan (Barrel) - Single-seat jet-powered fighter aircraft]
 
* [https://www.fighter-planes.com/info/j29.htm| (fighter-planes.com website) - J29 Tunnan SAAB]
 
* [http://plasticfantastique.com/walk_arounds/walkaround-the-saab-29-tunnan/| (plasticfantastique.com websites) - Walk around the SAAB 29 Tunnan (Picture gallery)]
 
  
{{AirManufacturer Saab}}
+
{{Britain boats}}
{{Sweden jet aircraft}}
 
{{Sweden premium aircraft}}
 

Revision as of 00:55, 10 May 2020

Rank VI USA | Premium | Golden Eagles
A-10A Thunderbolt (Early)
uk_70ft_mgb.png
MGB-61
AB RB SB
1.7 1.7 1.7
Research:5 900 Specs-Card-Exp.png
Purchase:6 300 Specs-Card-Lion.png
Show in game

Description

GarageImage MGB-61.jpg


The 70 ft MGB-61 is a rank I British motor gun boat with a battle rating of 1.7 (AB/RB/SB). It was introduced in during the Closed Beta Test for Ground Forces before Update 1.41. It was introduced in Update 1.83 "Masters of the Sea" as part of the British fleet closed beta test.

General info

Survivability and armour

MGB-61 has the following armour layout:

  • 2pdr Rolls Royce gunshield: 12.7 mm hardened armour
  • Hull: 40 mm, wood
  • Superstructure: 15 mm, wood
MGB-61 internals (starboard side). Note the ammo storages below the bridge and in front of the rear gun.

Any gun in the game will easily be able to penetrate anywhere on the boat, including the gunshield, at practically any range.

MGB-61 can be hull-broken by any gun with a diameter greater than 4 inches (102 mm). Hull-break triggers when a capable gun destroys any hull compartment or the bridge, resulting in instant destruction of the rest of the boat. At MGB-61's battle rating, the only gun capable of hull-breaking her is the 8cwt QF Mk I, found on Dark Adventurer. The ability to be hull-broken by guns larger than 4 inches is a trait that applies to the vast majority of boats in tier 1 and 2, so in that respect, MGB-61 isn't better or worse than most other boats.

MGB-61's hull is split into three compartments. The first compartment starts at the bow and ends just in front of the bridge. The second starts at the bridge and ends in front of the engines. The third starts at the engines and ends at the stern. Overall, with a crew complement of 12, survivability is average.

MGB-61 has 4 ammunition storages, one below each of the two Vickers Mk.V (12.7 mm) mounts and two in front of the rear 2pdr Rolls Royce (40 mm) mount. Destroying these will also destroy the rest of the boat. In practice, though, this almost never happens, since they are relatively small targets and because most guns at this battle rating are either machine guns or low-calibre autocannons which require many hits to destroy ammo storages. It's often both quicker and easier to target the hull compartments and knock out the crew.

Mobility

Mobility Characteristics
Game Mode Upgrade Status Maximum Speed (km/h) Turn Time (s) Turn Radius (m)
Forward Reverse
AB Stock 73 20 ~23.20 ~42.05
Upgraded 100 27 ~15.41 ~26.57
RB/SB Stock 64 17 ~25.64 ~47.61
Upgraded 74 20 ~21.18 ~38.39

When moving forwards at high speeds, the bow will lift out of the water. This creates a blind spot directly in front of the boat where the twin 12.7 mm Vickers Mk.V mounts can't depress far enough to engage surface targets.

MGB-61 has a displacement of 34 tons.

Armament

Primary armament

In her primary armament group, MGB-61 has four 12.7 mm Vickers Mk.V guns in two twin mounts, mounted on either side of the bridge. Each mount as 4,000 rounds of ammunition available, 2,000 rounds per gun, for a total of 8,000 rounds. Each mount can traverse horizontally at a rate of 75°/s and vertically at a rate of 75°/s. Each gun has a belt capacity of 200 rounds with a stated rate of fire of 600 rounds/min, though in actuality, for both mounts, the gun on the gunner's left side fires faster, at around 685 rounds/min, firing all 200 of its rounds in the time it takes the right side gun to fire about 175 rounds. With a stock crew, the guns can be reloaded in 13 seconds; with an aced crew, they can be reloaded in 10 seconds. Their maximum range against surface targets is roughly 2 km.

Guidance for the Secondary Gun Turret
Horizontal Vertical
±180° -10°/+70°

There are three choices of ammunition available:

  • Universal: T/AP/I
  • 12.7 mm I: T/I/I/I/I
  • 12.7 mm API: T/AP/I/AP
Penetration Statistics
Ammunition Penetration @ 0° Angle of Attack (mm)
10 m 100 m 500 m 1,000 m 1,500 m 2,000 m
Universal 27 26 23 20 18 16
12.7 mm I 22 21 18 16 14 12
12.7 mm API 27 26 23 20 18 16

Secondary armament

In her secondary armament group, MGB-61 has one 40 mm 2pdr Rolls Royce semi-automatic cannon in a single mount, mounted centerline on the stern. It has 1,200 rounds of ammunition available. The mount can traverse horizontally at a rate of 45°/s and vertically at a rate of 55°/s. The gun has a magazine capacity of 4 rounds and has a rate of fire of 231 rounds/min. With a stock crew, it can be reloaded in 1.7 seconds; with an aced crew, it can be reloaded in 0.85 seconds. Its maximum range against surface targets is roughly 3 km.

Guidance for the Secondary Gun Turret
Horizontal Vertical
±151° -12°/+60°

There are three choices of ammunition available:

  • Universal: HEF/AP-T/HEF/AP-T
  • 40 mm HE: HEF/HEF/HEF/AP-T
  • 40 mm AP: AP-T/AP-T/AP-T/HEF
Penetration Statistics
Ammunition Penetration @ 0° Angle of Attack (mm)
10 m 100 m 500 m 1,000 m 1,500 m 2,000 m
Universal 60 57 50 43 38 34
40 mm HE 60 57 50 43 38 34
40 mm AP 60 57 50 43 38 34

Special armament

Main article: Mk.VII depth charge
Mk.VII depth charges numbered 1-2 according to the order in which they're dropped (click to expand).

MGB-61 can carry two Mk.VII depth charges mounted amidships, one on each side facing outwards. The depth charges are dropped one at a time and drop in this order (see the image):

  1. Starboard side
  2. Portside

Before spawning, the detonation time delay can be set anywhere between 3 seconds and 10 seconds.

Depth Charge Characteristics
Mass (kg) Explosive Type Explosive Mass (kg) TNT Equivalent (kg)
196 TNT 130 130

Usage in battles

MGB-61's primary armament consists of four 12.7 mm Vickers Mk.V machineguns in two twin mounts. With all four on target, they have a very good damage output, roughly comparable to the damage output of a twin 20 mm cannon mount. However, when moving at high speeds, the bow of the boat will lift out of the water by quite a bit. This creates a blind spot in front of the boat for several hundred meters where one or both of the Vickers Mk.V mounts won't be able to depress their guns far enough to get shots on target. When on the move, either keep the enemy at an angle in front of the boat or keep them directly behind the boat where there's no.

The 12.7 mm Vickers Mk.V gun has a rather large belt capacity of 200 round, and, with a rate of fire of either 600 or 685 rounds per minute, it can fire for 20 or 17.5 seconds. Compared to her cannon-armed counterparts, MGB-61 can sustain fire for much longer, though this comes at the cost of a very long reload, between 13 and 10 seconds depending on the crew level. Running out of ammunition mid-engagement is almost always a death sentence due to the long reload. Because of this, always fire off any remaining ammunition after engagements if there are less than 300 or so rounds of ammunition between the four guns.

MGB-61's secondary gun, a 40 mm Rolls Royce cannon, hits harder than the 12.7 mm machine guns. It's particularly useful against larger boats with its powerful HE rounds and is practically a necessity against certain armoured targets, since the machine guns can only penetrate a maximum of 22 mm of armour; with an AP rounds capable of penetrating 60 mm of armour, it is more than enough to deal with any armoured targets MGB-61 might face. The 40 mm cannon is also useful for shooting at enemies outside of the machine guns' maximum range, roughly 2 km. All that said, the 40 mm cannon actually has a lower damage output against most targets than the four machine guns because of its lower rate of fire and because it has a ~1 second reload every four rounds. The gun also can't rotate a full 360°, making it less versatile than the machine guns. Outside of the cases mentioned above, the machine guns will generally do much better. Still, the 40 mm can be switched to in a pinch if really needed, for example, if the machine guns are reloading.

The 12.7 mm Vickers Mk.V mounts can fire in all directions except in a ~117° arc towards the opposite mount. There's also a blind spot for ~275 m directly behind the boat where both guns can't fire. When on the move, the rear blind spot is virtually eliminated, though a new blind spot in front of the boat is created. Overall, firing arcs are poor. The rear 40 mm Rolls Royce mount, on the other hand, has very good firing arcs, able to fire in all directions except for a ~62° arc centred towards the front of the boat.

Ammunition Choices

For the 12.7 mm Vickers Mk.V, the 12.7 mm I belt is slightly better against both aircraft and surface targets compared to the 12.7 mm API belt. Though the AP rounds penetrate 5 mm more armour at point-blank than the I rounds, with such a small difference, the AP rounds won't be able to penetrate any armour that the I rounds can't. That said, the damage output difference between the I and API belt is so little that it's largely down to preference which to use.

For the 40 mm 2pdr Rolls Royce cannon, the best ammunition choice is the 40 mm HE because it has the highest ratio of HE rounds to AP rounds, meaning that it will be the most effective against both aircraft and surface targets. The 40 mm HE belt should be the main ammunition choice, but a few of the 40 mm AP belt should also be taken into battle for use against armoured targets. The AP belt is also useful against enemies heading directly bow-in. In this situation, HE rounds will only damage the bow compartment and, if that compartment is already destroyed, will deal only minimal damage. AP rounds can pass through the bow compartment and deal damage to the rest of the vessel.

Depth Charges

Being anti-submarine weapons and with the present lack of submarines in the game, there is practically no reason to use them. While they can be used against surface targets, this is extremely situational. Sailing up right next to a slower target and dropping a depth charge can lead to some success, though again, this is very situational. If attempting this, remember the order in which the depth charges drop and that there is no reason to use any depth charge activation time setting above the minimum 3 seconds, since higher delay times means the depth charge will sink further, and thus away, from the target. Again, it should be reiterated that this is very situational.

There is no practical reason to take them into battle, especially since, if they're not dropped, they essentially become unarmoured ammo racks.

Modules

Tier Seakeeping Unsinkability Firepower
I Dry-Docking Tool Set 40 mm HE 12.7 mm I
II Rudder Replacement Fire Protection System Smokescreen 40 mm AP 12.7 mm API Auxiliary Armament Targeting
III Propeller Replacement Improved Rangefinder Depth Charges Primary Armament Targeting
IV Engine Maintenance New Pumps Artillery Support

Pros and cons

Pros:

  • 12.7 mm Vickers Mk.V: high rate of fire, large belt capacity, good damage output, can rotate 360°
  • 40 mm 2pdr Rolls Royce: very quick reload, high penetration with AP rounds, good firing arcs
  • Decent mobility

Cons:

  • Blind spot directly in front when moving at high speeds
  • 12.7 mm Vickers Mk.V: long reload, poor firing arcs
  • 40 mm 2pdr Rolls Royce: cannot fire directly forwards, small magazine capacity, cannot rotate 360°

History

Over the course of the Second World War, British Power Boat Company (BPB), based at Hythe, manufactured three motor anti-submarine boat (MASB) designs which were essentially three differently sized versions of the same overall design, as follows: a 60-foot version, consisting of MASBs 1-5; a 63-foot version, consisting of MASBs 22-45; and a 70-foot version, consisting of MASBs 6-21, 46, and 50-67). These boats were originally designed as motor torpedo boats (MTBs), but with the increasing threat of German U-Boats, those ordered by the Royal Navy were ordered as MASBs, their torpedo tubes replaced with depth charge racks and ASDIC equipment.

The 70-foot boats, in particular, had a standard displacement of around 30 tons, with a full displacement of up to 38 tons, depending on the boat. They had a length of 70 feet (21.3 m), a beam of 16 feet 7 inches (5.05 m), and a draught of around 3 feet (~1 m) depending on the boat. The boats were powered as follows:

  • MASBs 6-21: ordered by the Royal Navy as MASBs, all completed throughout 1940 and 1941. These were originally planned to be powered by Rolls Royce petrol engines. However, these engines became reserved only for Hurricane and Spitfire fighter aircraft by the time the boats were built. Instead, they were powered by two weaker Napier Sea Lion petrol engines driving two shafts and could only achieve 23 knots. In 1942, they received stronger Packard petrol engines and could achieve 38 knots.
  • MASB 46: ordered by the Royal Netherlands Navy as an MTB. With the capitulation of the Netherlands in May 1940 before her completion, she was requisitioned by the Royal Navy in July 1940 and completed as a MASB on 13th July 1941. MASB 46 was powered by three Rolls Royce petrol engines driving three shafts and could achieve 42.5 knots.
  • MASBs 50-67: ordered by the French Navy as MTBs. With the capitulation of France in June 1940 before the completion of most of the boats, they were requisitioned by the Royal Navy in July 1940 and completed as a MASB throughout 1940 and 1941. MASBs 50-67 were powered by three Isotta-Fraschini engines driving three shafts and could achieve 40 knots.

Around 1941, to counter the more heavily armed German E-Boats, the Royal Navy converted most of their MASBs, including all of the BPB 70-foot MASBs, into motor gun boats (MGBs). During this time, the BPB 70-foot boats were redesignated MGBs 6-21, 46, and 50-67 and were refitted with a standardized armament consisting of 2-pdr aft gun and two twin .50 calibre machine gun mounts on either side of the bridge.

MASB-61 was one of the ex-French BPB 70-foot boats. She was requisitioned by the Royal Navy in July 1940 and completed on 12th April 1941. In January 1940, she was refitted as a motor gun boat and redesignated as MGB-61. MGB-61 was commanded by the following:

  • Lt. P.N. Howes, RN: December 1940 to August 1941
  • Lt. I.R. Griffiths, RN: August 1941 to December 1941
  • T/Lt. D.P. James, RNVR: December 1941 to July 1942
  • T/Lt. J. Collins, RNVR: July 1942 to August 1943

MGB-61 served with the 6th MGB Flotilla with HMS Beehive at Felixstowe from 1941 to 1943. She was scrapped in February 1945.

Media

GEN LIVE WT 1 HPL.jpg

See also

External links

References

Bibliography

  • Konstam, Angus (2010). British Motor Gun Boat 1939–45. Osprey Publishing Ltd. ISBN 978-1-84908-077-4.


Britain boats
Motor torpedo boats  Brave Borderer · Dark Aggressor · Dark Aggressor TD · Fairmile D (617) · Fairmile D (697) · Fairmile D (5001) · HMS Gay Archer
  MTB-1(1) · MTB-1(2) · MTB Vosper · MTB Vosper(2) · MTB-422
Motor gun boats  Dark Adventurer · Fairmile A (ML100) · Fairmile B (ML345) · Fairmile C (312) · Fairmile C (332) · Fairmile D (601) · Fairmile H LCS(L)(2)
  HMAS Arrow · MGB-61 · MGB-75 · ML 1383 · SGB Grey Fox · SGB Grey Goose
Gunboats  HMS Spey