18-inch Mark XV Torpedo

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18-inch Mk.XV
Torpedo Mark XV.jpg
Aerial / Ship-launched TorpedoType
Britain Britain flag.pngCounty of Origin
General Characteristics
45 cmDiameter
5.26 mLength
817 kgMass
TorpexExplosive Type
247 kgExplosive Mass
395.2 kgTNT Equivalent
61 kphMax Speed
3.2 kmMax Range
50 mArming Distance
Arial Specific Characteristics
0 - 443 kphDrop Speed Range
0 - 122 mDrop Altitude Range
Naval Specific Characteristics
54 kphMax Speed (mode change)
5 kmMax Range (mode change)


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

46 cm  Mk.7
53 cm  Mk.8 · Mk.8-3 C/D · Mk.15 · Mk.16
57 cm  Mk.13 * · Mk.13/44 *
45 cm  F5W * · LT 1A/1
53 cm  G7a · G7E (mod.T5a) · Seal DM2A1
40 cm  SET-40
45 cm  45-36AN * · 45-36MAN * · 45-36NU
53 mm  53-38 · 53-39 · 53-56 · SET-65
45 cm  Mark XII * · Mark XV
53 cm  Mk.V · Mk.VIII · Mk.IX
32 cm  Mark 46
45 cm  Type 2 · Type 44 No.2 · Type 91 Mod.2 * · Type 91 Mod.3 *
53 cm  Type 6
61 cm  Type 8 No.2 · Type 90 · Type 93
45 cm  F200/450 *
  * = Aircraft launched