Mosquito FB Mk XVIII

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Mosquito FB Mk XVIII
General characteristics
2 peopleCrew
7.7 tEmpty weight
10.2 tTake-off weight
Flight characteristics
10 000 mCeiling
sec35.9/35.9/30.0Turn Time
km/hStalling speed
2 х Rolls-Royce Merlin-25Engine
waterCooling system
Speed of destruction
720 km/hStructural
315 km/hGear
Offensive armament
57 mm Molins Class M cannonWeapon 1
25 roundsAmmunition
60 shots/minFire rate
4 х 7.7 mm Browning machine gunWeapon 2
2 000 roundsAmmunition
1 001 shots/minFire rate
46 000 Rp icon.pngResearch
150 000 Sl icon.pngPurchase
Sl icon.png2 090 / 2 725/2 910 / 3 794/1 500 / 1 955Repair
43 000 Sl icon.pngCrew training
150 000 Sl icon.pngExperts
820 Ge icon.pngAces
x 1.60 Rp icon.pngReward for battle
This page is about the British twin-engine fighter Mosquito FB Mk XVIII. For the standard version, see Mosquito FB Mk VI.


The Mosquito FB Mk XVIII is a rank IV British twin-engine fighter with a battle rating of 4.0 (AB) and 3.7 (RB/SB). It was introduced in Update 1.39.

The Mk.XVIII also known as the "Tsetse" was a converted Mk.VI "FB". In this aircraft all four Hispanos were replaced with a single Molins 6-pounder Class M cannon (57mm) which in itself was a modified QF 6-pounder anti-tank gun fitted with an auto-loader to allow for both semi- and full automatic fire.

General info

Flight Performance

Max Speed
(km/h at 3,780 m)
Max altitude
Turn time
Rate of climb
Take-off run
561 544 10 000 31.8 32.4 0.9 3.1 450
Max Speed
(km/h at 3,780 m)
Max altitude (meters) Turn time (seconds) Rate of climb
Take-off run (meters)
642 595 10 000 28.2 30.0 16.7 7.6 450


Combat flap Take-off flap Landing flap Air brakes Arrestor gear
Wing-break speed
Gear limit
Combat flap
Max Static G
+ -
720 315 520 ~12 ~12
Optimal velocities
< 360 < 360 < 410 > 230
Compressor (RB/SB)
Setting 1
Optimal altitude 100% Engine power WEP Engine power
2,819 m 2,272 hp 3,612 hp
Setting 2
Optimal altitude 100% Engine power WEP Engine power
4,430 m 2,220 hp 3,530 hp

Survivability and armour

  • 9.5mm steel - Around nose and behind pilot/navigator seats
  • 64mm Bulletproof glass - Armored windscreen
  • Critical components located in the front and wings of aircraft (fuel, pilot, engine, controls)
  • Large amount of fuel tanks in the wings


Offensive armament

The Mosquito FB Mk XVIII is armed with:

  • 1 x 57 mm Mollins Class M cannon, under the nose-mounted (25 RPG)
  • 4 x 7.7 mm Browning .303 machine guns, nose-mounted (500 RPG = 2,000 total)

Usage in the battles

When used in AB it is often best to find lone targets away from the main activity due to it's more specialized armament. Like the Mk.VI before it, the Mk.XVIII has no defensive armament; even a well-flown bomber may take you out. The 6-pdr can take out all three kinds of tanks (light, medium and heavy) as well as light pillboxes, the latter being the easiest as they are stationary. Line up your gun sights, aim centre and fire. The distance you fire from is up to personal preference but a good start point is 600m. Light tanks can be taken care of from any angle and medium tanks can be dealt with from the sides and rear but aiming at their front may cause bounces and is not a guaranteed kill. Heavy tanks are like mediums but a frontal attack is most certainly going to bounce this time. Also when attacking tanks don't forget that they move and you will have to judge its location before you fire. A good way to practice this is to jump into a custom game and practice on people driving tanks as they can be harder to hit then a AI controlled vehicle.

In RB, as with Arcade Battles, you want to try and find some targets away from the main action, this can be easier in RB and SB as there can be fewer people and the spotting distance is reduced, stick down low and use the terrain to your advantage, learn to fly low and fast weaving up and down hills and valleys.

The same applies with SB but you are confined to the cockpit.

Some tips for taking off in both RB and SB: In RB apply flaps to take off and set 100% throttle (not WEP). Around 100kph/60mph, level the nose down parallel to the ground and wait till you reach around 200kph/120mph, then gently pitch up and you should slowly ease into the air. As for SB, apply throttle little by little and some counter steer to the right as torque from the engines will try to turn you to the left. Follow as with the RB take-off and bring the nose parallel with the ground around 100kph/60mph and pitch up a little once you reach 200kph/120mph to ease into the air.

Manual Engine Control

MEC elements
Mixer Pitch Radiator Supercharger Turbocharger
Oil Water Type
Controllable Controllable Not controllable Controllable Combined Controllable Not controllable


Tier Flight performance Survivability Weaponry
I Fuselage Repair Radiator
II Compressor Airframe
III Wings Repair Engine
IV Engine Injection Cover

Pros and cons


  • Stable gun platform, moves only a little even when firing the 57mm Mollins Class M cannon
  • Centralized guns, allows destroying targets at ranges up to 2km with some practice
  • Very good in its role as an attacker
  • Good acceleration due to its lightweight
  • Large cockpit with good visibility for would-be and experienced SB pilots
  • Has two pilots
  • 57mm Mollins Class M cannon has high penetration
  • Massive fuel load (longer time in the air)


  • No defensive armament
  • Not the most nimble of aircraft, at times it can feel very heavy and clunky especially with the added weight from the gun and armour
  • Massive fuel load (minimum is 1hr & 18min, which adds a lot of weight)
  • Mediocre rate of climb
  • Inflexible with roles, can only be used effectively as an attacker and not much else
  • Single ammunition for 57mm cannon lacks explosive filler: AP-T


The main role of the "Tsetse" was that of anti-shipping and anti-submarine, attacking Axis ships upon orders or while on patrols. When performing an attack run, the "Tsetse" would dive at 30º from 5,000ft (1,500m), however, the auto-loading system was prone to jamming if the plane moved during the attack run. Carrying 25 solid AP rounds, it could fire them at a rate of 55 a minute, running dry in just under 30 seconds. As a result, pilots would fire a burst of 3 to 4 shells before circling around for the next target, also because they risked the ships returning AA fire. Fortunately, the "Tsetse" was fitted with 900lbs (410kg) of additional armour to the engine cowlings, belly and under the cockpit for added protection.

Throughout its service, the "Tsetse" performed very well; the effectiveness of the new weapon was demonstrated on 10 March 1944 when Mk XVIIIs from 248 Squadron (escorted by four Mk VIs) engaged a German convoy of one U-boat and four destroyers, protected by 10 Ju-88's. Three of the Ju 88s were shot down. Pilot Tony Phillips destroyed one Ju-88 with four shells, one of which tore an engine clean off its wing. The U-boat was damaged. On 25 March, U-976 was sunk by Molins-armed Mosquitoes. On 10 June, U-281 was abandoned in the face of intense air attack from No. 248 Squadron and was later sunk by a Liberator of No. 206 Squadron. On 5 April 1945, five German surface ships in the Kattegat were attacked and again, the "Tsetse" demonstrated their value by setting them all on fire and sinking them, a German Sperrbrecher("minefield breaker") was lost with all hands, with some 200 bodies being recovered by Swedish vessels. Some 900 German soldiers died in total. On 9 April, German U-boats U-804, U-843 and U-1065 were spotted information heading for Norway. All were sunk. U-251 and U-2359 followed on 19 April and 2 May 1945.

In-game description

The de Havilland Mosquito was a twin-engine fighter-bomber which entered service with the RAF in 1941. Powered by two Rolls-Royce Merlin engines and constructed almost entirely of wood, the Mosquito possessed remarkable handling characteristics and performance for an aircraft of its size. Initially intended for use as a fast bomber and reconnaissance aircraft, early variants of the Mosquito carried no defensive weapons so as to save weight; the aircraft’s defense was its incredible speed and acceleration.

The Mosquito FB Mk.XVIII was unlike any other variant in that it was fitted with a 57mm anti-tank cannon in the nose; sources differ in the opinion of whether this was originally intended as an anti-tank or anti-submarine platform, but it was in the anti-shipping role with RAF Coastal Command which the Mk.XVIII would find most success. The 6-pounder cannon came to be known as the Molins gun; Molins were a company who had produced machinery for the cigarette industry in the inter-war period – they were able to adapt some of their designs to provide an auto-loading mechanism for the gun within the tight confines of the Mosquito’s nose. Either two or four 0.303 machine guns augmented the Molins gun, and extra armour was added to protect the engines and aircrew. The Mk.XVIII came to be known as the ‘Tse-tse’ by its crews, named after the notorious African Tse-tse fly as described by one pilot who commented ‘the tse-tse’s bite was rather nastier than a normal Mosquito’.

The standard attack profile for the Mk.XVIII involved entering a shallow dive from 2500-3000’, aiming at the target vessel’s waterline so that damage would not only be caused on impact, but also below the waterline on the far side of the vessel on exit. With the aircraft’s speed already in excess of 300 knots whilst in the dive, the shell’s velocity was one of the highest in service. The Tse-tse Mosquito entered service in 1944 and achieved notable successes as part of the Banff Strike Wing operating from the East coast of Scotland against axis shipping around the coast of Norway.

Isolated examples do exist of the Molins gun being used in the air-to-air role, with predictably spectacular results. Only some 45 Mosquito FB Mk.XVIIIs were produced, some converted from the 20mm cannon armed FB.VI.


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

Read also

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.


Paste links to sources and external resources, such as:

  • topic on the official game forum;
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Britain strike and twin-engine fighters
Single-engined  Hurricane Mk IV · Tempest Mk V (Vickers P) · ▄Hellcat Mk II
Beaufighter  Beaufighter Mk VIc · Beaufighter Mk X · Beaufighter Mk 21
Naval  Firefly F Mk I · Firefly FR Mk V · Firebrand TF Mk IV
Mosquito  Mosquito FB Mk VI · Mosquito FB Mk XVIII
Whirlwind  Whirlwind Mk I · Whirlwind P.9
  Hornet Mk.III