Anti-submarine net

An anti-submarine net or anti-submarine boom is a boom placed across the mouth of a harbour or a strait for protection against submarines.[1][2]

An anti-submarine net used during WWII in Nova Scotia, Canada

Examples of anti-submarine nets

gollark: Lyric wrote three bots.
gollark: hd!histohist <@435756251205468160> <@509849474647064576>
gollark: Interesting.
gollark: hd!histohist <@!330678593904443393> <@241757436720054273> <@164178408920711168> <@!345300752975003649> <@304000458144481280>
gollark: hd!histohist -1

See also

References

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