MTB Vosper(2)

MTB Vosper(2)

MTB Vosper

ML 1383

MTB Vosper(2)

MTB Vosper

ML 1383

Britain

I Rank

Battle rating:

AB	RB	SB
1.7	1.7	1.7

Class:

Motor torpedo boat

Boat

Research:4 000

Purchase:2 100

Show in game

Description

The MTB Vosper 2 series is a rank I British motor torpedo boat with a battle rating of 1.7 (AB/RB/SB). 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

Vosper 2 series has the following armour layout:

• 20 mm Oerlikon Mk.II gunshield: 12.7 mm hardened armour
• Hull: 24 mm, wood
• Superstructure: 15 mm, wood

Vosper 2 series internals (starboard side). Note the ammo storages below the bridge.

Any gun in the game will easily be able to penetrate anywhere on the boat, including the gunshield, at practically any range. Vosper 2 series can also be hull-broken by any gun larger than 4 inches (102 mm). Luckily though, at her battle rating, the only gun that can hull-break Vosper 1 series is the 8cwt QF Mk I (114 mm), found on Dark Adventurer. These are traits of the vast majority of boats in tier I and II though, so they aren't really a disadvantage.

The hull is split into three compartments. The first compartment starts at the bow and ends just in front of the forward gun mounts. The second starts at the forward gun mounts 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.

Of note are the ammo storages located just underneath the bridge. Destroying these will also destroy the rest of the boat. In practice, though, this almost never happens, since most guns at this battle rating are either machine guns or low-calibre autocannons which require a large number of hits to destroy the ammo storages. It's both faster and easier to just target the hull compartments and knock out the crew.

Armament

Primary armament

In her main armament group, Vosper 2 series has one 20 mm Oerlikon Mk.II in a single mount, mounted centerline in front of the bridge. It has 1,980 rounds of ammunition available. The mount can traverse horizontally at a rate of 75°/s and vertically at a rate of 75°/s. The gun has a belt capacity of 60 rounds and has a rate of fire of 450 rounds/min. With a stock crew, the guns can be reloaded in 5.2 seconds; with an aced crew, they can be reloaded in 4 seconds. Their maximum range against surface targets is roughly 2.1 km.

Guidance for the Main Gun Turret
Horizontal	Vertical
±180°	-10°/+60°

There are three choices of ammunition available:

• Universal: HEF-T/HEF-I/AP-T

• 20 mm HE: HEF-T/HEF-I/AP-T/HEF-I

• 20 mm AP: AP-T/AP-T/AP-T/HEF-I

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	39	36	29	23	20	17
20 mm HE	39	36	29	23	20	17
20 mm AP	39	36	29	23	20	17

Secondary armament

In her secondary armament group, Vosper 2 series has two 12.7 mm Vickers Mk.V guns in a twin mount, mounted centerline behind the bridge. It has 5,200 rounds of ammunition available, 2,600 rounds per gun. The 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 and has a rate of fire of 600 rounds/min. For some reason, the gun on the gunner's right side fires at a faster rate of fire, around 700 rounds/min, firing all 200 of its rounds in the time it takes the left side gun to fire about 170 rounds. With a stock crew, the guns can be reloaded in 5.2 seconds; with an aced crew, they can be reloaded in 4 seconds. Their maximum range against surface targets is roughly 2.1 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

Torpedo armament

Vosper 2 series has two torpedo tubes, one on each side of the bridge, and can carry two 533 mm Mk.VIII torpedoes. The torpedo tubes are pointed forwards, but they are angled outwards on each side and are fixed, requiring the boat to be turned in order to aim them.

Torpedo Characteristics
Torpedo Mode	Mass (kg)	Maximum speed in water (km/h)	Travel distance (km)	Depth stroke (m)	Arming distance (m)	Explosive type	Explosive mass (kg)	TNT equivalent (kg)
No	1566	84	4.57	1	50	TNT	327	327
Yes	1566	76	6.40	1	50	TNT	327	327

The Torpedo Mode modification is available as a tier IV modification. Installing it has the following changes:

Torpedo Mode Specification Changes
Max Distance (m)	Max Speed (m/s)
+1830	-1

Special armament

Vosper 2 series can carry four Mk.VII depth charges just behind the bridge, three on each side facing outwards. The depth charges are dropped one at a time and drop in this order:

1. Portside, foremost
2. Starboard side, foremost
3. Portside, aftmost
4. Starboard side, aftmost

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

Vosper 2 series is the first boat in the British naval tech tree to be fitted with the 20 mm Oerlikon Mk.II cannon. The Oerlikon Mk.II is a very common gun found all throughout the US and British naval tech trees, and it's a fantastic one at that. With both a very good damage output and a maximum range of about 2.1 km, the Oerlikon Mk.II is a nice change in pace compared to the armament of previous boats. Although they may not be as hard-hitting as the 2 cm/65 C/38 (20 mm), another very common 20 mm gun, the Oerlikon Mk.II has a much larger belt size of 60 rounds, compared to the 40 rounds of the 2 cm/65 C/38. Even with a large capacity belt, it's still good practice to fire off any remaining ammunition after engagements to have the belt be at full capacity for the next engagement.

As for her secondaries, Vosper 2 series has a twin 12.7 mm Vickers Mk.V mount. Though lacking the punch of the Oerlikon Mk.II individually, the Vickers Mk.V guns have a better rate of fire, and, together, the two guns have roughly the same damage output as the single 20 mm. Still, the single Oerlikon Mk.II is the better weapon on the Vosper 2 series for two reasons: 1) its HE rounds have high-explosive filler, which translates to them starting fires much more often, even compared to the Vickers Mk.V's incendiary rounds; 2) it can fire directly forwards. This second point is the most important because it means that in order to even use the Vickers Mk.V guns, the sides and rear of the boat need to be exposed. In contrast, the Oerlikon Mk.II can fire while only exposing the bow compartment which can greatly increase survivability.

Aim to always keep the bow pointed directly towards the enemy. This does mean that the rear gun mount won't be able to fire at all, but since it will be controlled by the inaccurate AI gunners, it generally isn't worth sacrificing survivability over. In most cases, it's better to just set the secondaries to target aircraft only and forget about them, relying only on the Oerlikon Mk.II.

Both the Oerlikon Mk.II mount and Vickers Mk.V mount have very good firing arcs. The single Oerlikon Mk.II mount can fire in a roughly 157° arc to either side, centered directly forwards, and the twin Vickers Mk.V mount can also fire in a roughly 157° arc to either side, this time centered directly rearwards.

Ammunition Choices

For the 20 mm Oerlikon Mk.II, the best ammunition choice is the 20 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 20 mm HE belt should be the main ammunition choice, but a few of the 20 mm AP belt should also be taken into battle, but not really for use against armoured targets. In practice, the HE belt, with its one AP round every three HE rounds, is sufficient in most cases, especially at Vosper 2 series' battle rating where armoured boats are relatively rare. Instead, the AP belt is useful against enemies heading directly bow-in. HE rounds will only damage a possibly already-destroyed bow compartment, dealing minimal damage. In a situation like this, AP rounds can pass through the bow compartment and deal damage to the rest of the vessel.

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, at this level, there isn't really much of a difference. Generally, if the AP rounds can penetrate it, so will the I rounds.

Torpedoes

The Mk.VIII torpedoes are a decent torpedo with above-average top speeds and warhead size. Its maximum range is more of less average compared to other torpedoes at this tier.

The Torpedo Mode modification should never be installed. The higher maximum speed is much more valuable against the fast-moving boats of tier I and II, and the 4.57 km maximum range with the Torpedo Mode modification installed is more than enough for the small maps.

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, since, if they're not dropped, they essentially become unarmoured ammo racks.

Modules

Tier	Seakeeping	Unsinkability		Firepower
I	Dry-Docking	Tool Set		20 mm HE	12.7 mm I
II	Rudder Replacement	Fire Protection System	Smokescreen	20 mm AP	12.7 mm API	Auxiliary Armament Targeting
III	Propeller Replacement				Depth Charges	Primary Armament Targeting
IV	Engine Maintenance	New Pumps		Artillery Support	Torpedo Mode

Pros and cons

Pros:

• Powerful 20 mm cannon, high belt capacity (60 rounds)
• Great firing arcs
• Good manoeuvrability
• Good torpedoes, above-average maximum speed and explosive mass

Cons:

• Rear 12.7 mm twin gun mount cannot fire directly forwards

History

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: https://wiki.warthunder.com/(Vehicle-name)/History) and add a link to it here using the main template. Be sure to reference text and sources by using <ref>, as well as adding them at the end of the article.

Media

An excellent addition to the article will be video guides, as well as screenshots from the game and photos.

See also

• Vosper 1 series - Sister ship with equipped only with Lewis machine gun armaments.

External links

Paste links to sources and external resources, such as:

• topic on the official game forum;
• encyclopedia page on ship;
• other literature.