Dark Adventurer

Dark Adventurer

Fairmile B (ML345)

Dark Aggressor

Dark Adventurer

Fairmile B (ML345)

Dark Aggressor

Britain

II Rank

Battle rating:

AB	RB	SB
2.0	2.0	2.0

Class:

Motor gun boat

Boat

Research:14 000

Purchase:32 000

Show in game

Description

The Dark-class, Dark Adventurer (FPB 1101) is a rank II British motor gun boat with a battle rating of 2.0 (AB/RB/SB). It was introduced in Update 1.83 "Masters of the Sea" as part of the British fleet closed beta test. With the split of the naval tech trees in Update "New Power", Dark Adventurer was moved to the coastal fleet tech tree.

General info

Survivability and armour

Armourfront / side / back

Hull40 mm (wood)

Superstructure15 mm (wood)

Number of section4

Displacement64 t

Crew15 people

Dark class (FPB 1101) has the following armour layout:

• 114 mm 8cwt QF Mk I gunshield: 12.7 mm, hardened armour
• Hull: 40 mm, wood
• Superstructure: 15 mm, wood

Dark class (FPB 1101) internals (starboard side). Note the ammo racks below the forward gun.

Like most coastal vessels, Dark class (FPB 1101) has no practical armour. The gunshield is largely superficial, so while it may stop low-calibre machine guns, heavy machine guns and cannons will easily penetrate it at any range. The hull and superstructure are unarmoured and will not stop any sort of gunfire.

The hull is split into four hull sections. Starting from the bow and working towards the stern, the first section starts at the bow and ends just in front of forward gun; the second ends just after the bridge; the third ends where the fuel tanks end, just in front of the engines; and the fourth ends at the stern. Dark class (FPB 1101) can be destroyed by any round with a large enough diameter and explosive mass. In general, this is limited to HE rounds greater with a diameter greater than or equal to 4 inches (102 mm) and with an explosive mass greater than 1.5 kg. At Dark class (FPB 1101)'s battle rating, the only guns capable of taking her out in a single shot are:

• the 10.5 cm SK C/32, found on M-802; and
• the 114 mm 8cwt QF Mk I, found on Dark class (FPB 1101) herself.

There is one ammunition storage that holds ammunition for both the primary and secondary gun turrets. It is located directly behind the forward gun turret just above the waterline. Destroying it will instantly destroy the boat.

Dark class (FPB 1101) has a crew complement of 15. With a stock crew, Dark class (FPB 1101) is knocked out when 10 crew are lost; with an aced crew, this is increased to 11. Overall, the survivability is average.

Mobility

Speedforward / back

AB100 / 37 km/h

RB74 / 27 km/h

Mobility Characteristics
Game Mode	Upgrade Status	Maximum Speed (km/h)		Turn Time (s)	Turn Radius (m)
		Forward	Reverse
AB	Stock	73	27	~26.46	~53.37
	Upgraded	100	37	~17.53	~22.22
RB/SB	Stock	64	24	~29.42	~67.67
	Upgraded	74	27	~23.53	~42.2

Dark class (FPB 1101) has a displacement of 64 tons.

Modifications and economy

Repair costBasic → Reference

AB911 → 1 148

RB1 317 → 1 660

Total cost of modifications13 840

20 150

Talisman cost860

Crew training9 200

Experts32 000

Aces320

Research Aces250 000

Reward for battleAB / RB / SB

80 / 100 / 100 %

130 / 130 / 130 %

Modifications

Seakeeping	Unsinkability	Firepower
Dry-Docking Research: 920 Cost: 1 300 135 Rudder Replacement Research: 620 Cost: 890 90 Propeller Replacement Research: 870 Cost: 1 300 125 Engine Maintenance Research: 1 500 Cost: 2 200 220	Damage Control Division Research: 920 Cost: 1 300 135 Fire Division Research: 620 Cost: 890 90 Smokescreen Research: 620 Cost: 890 90 New Pumps Research: 1 500 Cost: 2 200 220	40 mm HE clips Research: 920 Cost: 1 300 135 Auxiliary Armament Targeting Research: 620 Cost: 890 90 40 mm AP clips Research: 620 Cost: 890 90 Primary Armament Targeting Research: 870 Cost: 1 300 125 Depth Charges Research: 870 Cost: 1 300 125 Improved Rangefinder Research: 870 Cost: 1 300 125 Artillery Support Research: 1 500 Cost: 2 200 220

The recommended modification research order is:

• Tool Set
• Fire Protection System
• 40 mm HE clips
• 40 mm AP clips
• Smokescreen
• Propeller Replacement
• Improved Rangefinder
• Artillery Support

After that, prioritize the rest of the seakeeping modifications first, then finish researching the remaining modifications in whatever order you prefer.

Armament

Primary armament

Turret114 mm/19 8cwt QF Mk I cannon

Ammunition100 rounds

Vertical guidance-8° / 12°

The primary armament consists of a single 114 mm 8cwt QF Mk I cannon mounted forwards, with a maximum ammunition load of 100 rounds. Stock, the mount can traverse horizontally at a rate of 26°/s and vertically at a rate of 21°/s; with the "Primary Armament Targeting" modification installed, this is increased to 30°/s and 25°/s respectively. The gun is single-shot with a nominal rate of fire of 12 rounds/min. With a stock crew, it can be reloaded in 6.5 seconds; with an aced crew, this is decreased to 5 seconds.

Primary armament guidance
Horizontal	Vertical
±180°	-8°/+12°

There is only one ammunition type available:

• 114 mm HE

Penetration statistics
Ammunition	Type of warhead	Penetration @ 0° Angle of Attack (mm)
		1,000 m	2,500	5,000 m	7,500 m	10,000 m	15,000 m
114 mm HE	HE base fuze	34	34	34	34	34	34

Shell details
Ammunition	Type of warhead	Velocity (m/s)	Projectile mass (kg)	Fuse delay (m)	Fuse sensitivity (mm)	Explosive mass (TNT equivalent) (kg)	Ricochet
							0%	50%	100%
114 mm HE	HE base fuze	457	6.66	0	0.1	2.9	79°	80°	81°

Secondary armament

Turret40 mm QF Mark VII gun

Ammunition2000 rounds

Belt capacity4 rounds

Fire rate160 shots/min

The secondary armament consists of a single 40 mm QF Mk VII cannon mounted aft with a maximum ammunition load of 1500 rounds. Stock, the mount can traverse horizontally at a rate of 34°/s and vertically at a rate of 29°/s; with the "Auxiliary Armament Targeting" modification installed, this is increased to 40°/s and 34°/s respectively. The gun has a magazine capacity of 4 rounds and a cycle rate of fire of 160 rounds/min. With a stock crew, it can be reloaded in 0.49 seconds; with an aced crew, this is decreased to 0.38 seconds. The reload is short enough that there is a seamless transition between magazines, although continuously firing for too long will cause the gun to overheat and jam. This happens after continuously firing for about 1.25 min, or about 200 rounds. There is no noticeable drop in accuracy as the gun overheats.

Secondary armament guidance
Horizontal	Vertical
±180°	-10°/+89°

There are three ammunition types available:

• Universal: AP-T · HEFI-T
• 40 mm HE clips: HEFI-T · HEFI-T · HEFI-T · AP-T
• 40 mm AP clips: AP-T · AP-T · AP-T · HEFI-T

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	80	77	66	57	50	45
40 mm HE clips	80	77	66	57	50	45
40 mm AP clips	80	77	66	57	50	45

The best ammunition is the 40 mm HE clips because it has the highest ratio of HE rounds to AP rounds. Take mostly 40 mm HE clips along with several 40 mm AP clips for armoured targets. Because of the gun's seamless reload, there is no reason to use the Universal belt once the others are unlocked.

Additional armament

Setup 12 x Mk.VII depth charge

Dark class (FPB 1101) has two possible loadouts:

1. Without load
2. 2x Mk.VII depth charge

Depth charges

Mk.VII depth charges numbered according to their drop order (click to view a larger image).

The Mk.VII depth charges are carried amidships in front of the aft gun, one on each side. They are dropped one at a time in the following order:

1. Starboard
2. Port

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)	HE armour penetration (mm)	Armoured vehicle destruction radius (m)	Fragment dispersion radius (m)
196	TNT	130	130	101	8	122

There is almost no practical reason to use depth charges on any naval vessel in the game. Although they usually result in a one-hit kill if used properly, they are extremely situational, requiring the player to close to point-blank ranges to even use them. In almost every case, anytime a depth charge could be used, the guns can be used instead to greater effect. In fact, depth charges tend to actually be a liability in battle, since they essentially act as exposed ammo racks before they're dropped. They can be shot at, and if destroyed, they have a chance to detonate, instantly destroying the boat.

Despite this, some success can be had in dropping them either next to, or in front of a large, slow target. If dropping them next to the target, remember the depth charge drop order, since it's most likely that only the depth charges dropped on the side closest to the enemy will deal any damage. If dropping in front of the target, rush in from the sides as quickly as possible and drop them all at once directly in front of the target. For both cases, set the depth charge time delay to the minimum 3 seconds, since any higher time delay will only allow the depth charge to sink further away from the target, giving them more time to move out of the way. Again, using depth charges is extremely situational, and they will only be a liability the vast majority of the time, so take them at your own discretion.

Usage in battles

Dark class (FPB 1101)'s main armament, the 114 mm 8cwt QF Mk I, is one of the largest calibre coastal fleet weapons in the game and fires the single strongest HE round of any coastal vessel, allowing it to knock out anything smaller than a sub-chaser. Guns that can take her out in a single shot are very rare in the coastal fleet, and Dark class (FPB 1101) is, by far, the lowest BR vessel equipped with one. However, against sub-chasers and other larger vessels, the damage is lacklustre, often requiring multiple hits to destroy a single hull segment. Additionally, the terrible muzzle velocity and very poor ballistics make the gun difficult to use in practice, with it only really effective against stationary targets or at very close ranges, within 500 m at most, and while the muzzle velocity is bad, it isn't quite bad enough to allow the 8cwt QF Mk I to fire from behind cover. Because of this, and despite the one-shot potential, the 8cwt QF Mk I is simply outclassed by the secondary 40 mm QF Mark VII in the vast majority of situations.

In battle, make the most of the QF Mark VII by switching to manual control with Alt+2. The best advantage of the QF Mark VII over many other coastal weapons is its seamless reload. Without having to worry about reloading, vessels equipped with these types of weapons can be played much more aggressively. However, on Dark class (FPB 1101), the gun is mounted aft, which limits its versatility by preventing it from firing forwards and increasing the time needed to traverse the gun from one side to the other. While being mounted aft does come with some benefits—mainly, it gets destroyed less often—this is an overall net disadvantage and limits Dark class (FPB 1101)'s effectiveness in comparison with vessels with forward-mounted guns, like Dark Aggressor.

Because of this, try to not be the first to rush into action and avoid meeting enemies head-on as much as possible, since it takes some time to turn the hull to get the QF Mark VII on target. Instead, flank the enemy and try to get into ambush positions behind cover. Once in place, turn the hull around so that the stern is facing towards the enemy and use the QF Mark VII to make short work of anything that passes by, prioritizing armoured targets if possible. Dark class (FPB 1101) has a somewhat poor reaction time, so try not to stay in one place for too long to avoid being flanked yourself. Since the hull is already turned around, you can quickly retreat if necessary by using smoke and going forwards. In general, stick to close-range engagements on the flanks with the QF Mark VII, but don't be afraid to switch back to the 8cwt QF Mk I to one-shot tricky opponents either.

While manually controlling the QF Mark VII, there are several things to keep in mind. First, while you don't have to worry about reloads, the QF Mark VII is one of the few weapons that can overheat, causing it to jam after continuously firing about 200 rounds. This is more than enough for multiple engagements, though, and the overheating doesn't have any noticeable negative effect on accuracy as is the case with some other guns. However, you should still pay attention to the overheating and occasionally retreat to let the gun cool off. The second thing to consider is what to do with the primary 8cwt QF Mk I. This gun is completely useless against aircraft, and under AI control, it is practically worthless against surface targets too. Because of this, it's best to just disable the AI gunners. This keeps the gun loaded, level, and forward-facing for when it's actually needed. This ties into the last thing to be aware of, which is that there will be no AI anti-aircraft defense while playing like this, so always look out for aircraft. The AI gunners are very inaccurate against aircraft unless the enemy is coming directly head-on, so don't bother giving control of the QF Mark VII back to the AI gunners; just try to shoot down enemy aircraft manually.

Pros and cons

Pros:

• Primary armament can destroy most opponents with a single shot
• Secondary armament: very good damage output, high armour penetration, seamless reload

Cons:

• Primary armament: very low muzzle velocity, low rate of fire, difficult to use
• Secondary armament is mounted aft, cannot fire directly forwards

History

The Dark class fast patrol boats, also known as the Admiralty Type "A" Fast Patrol Boat (FPB), were 18 patrol boats used by the Royal Navy, with another 8 built for export. The class was originally ordered in the late 1940s, calling for a new diesel-powered FPB, with Saunders-Roe eventually winning the design contract in early 1952. The Dark class was built between 1954 and 1958 primarily by Saunders-Roe alongside several other British shipbuilding companies. The Dark class had interchangeable armaments and could be configured as motor torpedo boats, as motor gun boats, or as minelayers. These armaments include:

• 4x 21-inch torpedoes
• 1x 40 mm Bofors gun (forward), 2x 21-inch torpedoes
• 1x 40 mm Bofors gun (aft), 1x 4.5-inch cannon (forward)
• 16x mines

The Dark class boats had a length of 71 ft. 8 in., a beam of 19 ft. 5 in., a draught of 6 ft. 1 in, and a standard displacement of 50 long tons and were the first of their kind in Royal Navy service to use diesel engines. Each boat was powered by two 18 cylinder Napier Deltic diesel engines, each producing 2,500 bhp and driving a single shaft, with an exhaust port on the port side hull. The first few Dark class boats were painted entirely in standard grey. However, the port side of the hulls would quickly become stained by the diesel exhaust fumes, even after only a short period of use. Initially, an experimental paint scheme was tried on HMS Dark Biter (P1104) around March 1956 that had the rear hull painted in black with the front hull still in grey. This, too, was found to be unsatisfactory, and eventually, it was decided that the entire hull of the Dark class boats was to be painted in black.

Eighteen Dark class boats served with the Royal Navy. All of these were built with wooden hulls and aluminium decks on aluminium hull frames with the exception of the final boat, the unique HMS Dark Scout (P1116), which had an all-aluminium welded construction, a redesigned bridge, and transom exhaust ports. In addition to these, eight more Dark class boats were also built for export, all built by Saunders-Roe: two standard boats to Finland; five riveted, all-aluminium boats with an additional electric drive system to Burma; and one standard boat to Japan. A further nine Dark class boats were planned to be built as well for Royal Navy service, but these were all cancelled in 1955. During the 1960s and 1970s, of the 18 Dark class boats in Royal Navy service, two were used as target practice with one being sunk. The surviving 17 were sold to various places, including several to Italian law enforcement in the late 1960s.

HMS Dark Adventurer, pennant number P1101, was the first of the Dark-class boats. She was built by Saunders-Roe in Beaumaris and was completed on 28th October 1954. She was sold in early 1970.

Media

Skins

• Skins and camouflages for the Dark Adventurer from live.warthunder.com.

Images

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Videos

The Shooting Range #122 - War Machines section at 00:32 discusses the Dark class (FPB 1101).

See also

• Dark Aggressor
• Brave Borderer

External links

• [Development] Newsflash from IgroMir 2016! New ships and first look at Japanese Ground Forces!
• [Coastal Forces Veterans Forum] The British "Dark" Class
• [Coastal Forces Veterans] Boat Database
• [British Military Powerboat Team] Dark Class Boats
• [mprints.co.uk] SARO Dark Class MTBs
• [Coastal Forces Veterans] Boat Database