B4M mine

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The B4M is a French high-explosive (HE) ship-laid naval mine.

Vehicles equipped with this weapon

General info

Tell us about the tactical and technical characteristics of the mine.

Effective damage

Describe the type of damage produced by this type of mine (high explosive, splash damage, etc)

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 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. This is a contact mine, so both steel-hulled and wooden-hulled ships can set it off, making it effective against denying access to capture points, for instance.

Pros and cons


  • 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 If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the weapon and adding a block "/History" (example: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

  • www.navweaps.com/Weapons/WAMFR_Mines.php

Naval mines
USA  ‎Type A Mark I*
Germany  ‎EMC · ‎EMF · ‎UDM-E
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
France  B4M
  *  = Aircraft-laid