Type A Mark I mine

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The Type A Mark I is an American high-explosive (HE) air-dropped naval mine.

Vehicles equipped with this weapon

Vehicles equipped with this weapon
Twin-engine fighters  F7F-3
BTD-1  BTD-1
PB4Y  PB4Y-2 · ␗PB4Y-2 · ▄PB4Y-2
PBM-3  PBM-3 "Mariner"
PBY-5  PBY-5 Catalina · PBY-5A Catalina · ▂PBY-5A Catalina · ▄Catalina Mk IIIa
PV-2  PV-2D
SB2C  SB2C-1C · SB2C-4
SB2U  SB2U-2 · SB2U-3
SBD-3  SBD-3

General info

Mine characteristics
Mass 494 kg (1,000 lbs)
Explosive mass (TNT eq) 508 kg (1120 lbs)
HE max penetration 112 mm
Armour destruction radius 16 m
Fragment dispersion radius 170 m

Effective damage

This mine, being an underwater naval type, produces a strong high-explosive overpressure. Due to the ability to drop the mine on ground targets as a bomb, the steel casing can also contribute some shrapnel effect.

Comparison with analogues

Give a comparative description of mines that have firepower equal to this weapon.

Usage in battles

The prescribed usage of this mine is against steel-hulled naval craft. As a mine, it can be laid in choke points, capture points or in front of advancing enemy ships. Direct hits aren't required to generate hits, but due to the fusing of the mine, it will explode if a ship is directly struck, dealing a large amount of damage. Note that this is a magnetic mine and wooden-hulled craft will most likely not set it off, so it is not effective against denying small craft access to capture points, for instance.

The mine can also be used as a bomb in Ground RB and Air AB/RB as it has, pound for pound, more explosive potential than the standard 1,000 lbs. American bomb. This gives planes able to carry it extra damage potential without the additional weight of heavier ordinance.

Pros and cons


  • Large explosive mass for its weight, especially compared to regular bombs
  • Can be used as a bomb against ground targets with good effectiveness
  • Useful for trapping ships in various choke points


  • Being a naval mine, it requires a direct hit or near miss to detonate


Examine the history of the creation and combat usage of the weapon in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the weapon and adding a block "/History" (example: https://wiki.warthunder.com/(Weapon-name)/History) and add a link to it here using the main template. Be sure to reference text and sources by using <ref></ref>, as well as adding them at the end of the article with <references />.


Excellent additions to the article would be video guides, 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

Paste links to sources and external resources, such as:

  • topic on the official game forum;
  • other literature.

Naval mines
USA  ‎Type A Mark I*
Germany  ‎EMC · ‎EMF
USSR  KB-1 pattern 1931 mine · KB-3 pattern 1940 · MIRAB · YAM-43
Britain  Type M Mark I
Japan  Mk.6 mod1 · ‎Type 93 mod1
Italy  ‎Bollo P.125/1932 · ‎Bollo P.200/1936
  *  = Aircraft-laid