Naval special armaments
The B4M is a French high-explosive (HE) ship-laid naval mine.
Tell us about the tactical and technical characteristics of the mine.
Describe the type of damage produced by this type of mine (high explosive, splash damage, etc)
Give a comparative description of mines that have firepower equal to this weapon.
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:
Cons:
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 If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the weapon and adding a block "/History" (example: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.
Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:
| 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 | |