18-inch Mark XV Torpedo

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Torpedo Mark XV.jpg


The 18-inch Mark XV, or simply Mark XV, is a British torpedo. It is used as both an aerial torpedo on some torpedo bombers and as a ship launched torpedo on some Motor Torpedo Boats (MTBs).

Vehicles equipped with this weapon

General info

The Mark XV is a mid-war torpedo. It was deigned for both aerial use and use on torpedo boats. Being an aerial torpedo it is smaller than the 21 inch (53.3 mm) torpedoes designed exclusively for use on ships.

The naval version of the torpedo has an optional "Torpedo Mode" modification which increases the range from 3.2 km to 5 km, but reduces the speed by 7 kph, bringing it to 54 kph.

Effective damage

The increased warhead size compared to the Mark XII, means that the it is capable of killing just about any player controlled ships with a single hit. It is sometimes possible for some cruisers to survive a hit from a Mark XV, but this is rare.

Comparison with analogues

Compared to the earlier Mark XII torpedo the Mark XV is slower but has a much more powerful warhead (more than twice the size).

Usage in battles

When dropped from aircraft the MArk XV has a much better speed range than the Mark XII, being able to be dropped at speeds up to 443 kph (compared to 281 kph), however the max drop altitude is only marginally improved to 122 m.

Pros and cons


  • Large warhead for a 45 cm torpedo
  • Better airdrop characteristics than the Mark XII



The Mark XV entered service in 1942 with the Fleet Air Arm, RAF Coastal Command and Royal Navy. It was the first 18-inch torpedo to use Torpex (short for torpedo explosive) instead of TNT. Torpex is 50% more powerful than TNT by mass.


An excellent addition to the article would be a video guide, as well as screenshots from the game and photos.

See also

Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:

  • reference to the article about the variant of the weapon;
  • references to approximate analogues by other nations and research trees.

External links

450 mm  Mk.7
533 mm  Bliss-Leavitt Mk.1 · Mk.8 · Mk.8-3 C/D · Mk.15 · Mk.16
569 mm  Mk.13 · Mk.13-1 * · Mk.13-1 Case *
324 mm  Mark 44
450 mm  C/06D · LT 1A/1 · F5W *
500 mm  G6c
533 mm  G7a · Mark 35 · Seal DM2A1
400 mm  SET-40
450 mm  45-36NU · 45-36AN * · 45-36MAN *
456 mm  Pattern 1910 · Pattern 1912
533 mm  53-38 · 53-39 · 53-56 · SET-65
450 mm  R.G.F. Mark VI · Mark XII ** · Mark XV **
533 mm  Mark I · Mk.V · Mk.VIII · Mk.IX
324 mm  Mark 46
450 mm  Type 2 · Type 43 · Type 44 No.2 · Type 91 Model 2 * · Type 91 Model 3 *
533 mm  Type 6 · Type 43 (1910) · Type 54 model 3 · Type 89
610 mm  Type 8 No.2 · Type 90 · Type 93 Model 1, Mod 2 · Type 93 Model 3
450 mm  F200/450 * · S.I.170/450X5,25 · W.200/450X5,75
533 mm  S.I.270 · S.I. 250/533,4X7,5 Tipo A · S.I. 270/533,4X7,2 Tipo I · S.I. 270/533X6.84 Tipo L · S.I. 270/533,4X7,2 Tipo M
450 mm  m/38* · m/41*
  *  = Aerial torpedo
** = Aerial and ship-launched torpedo