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
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See also

References
  1. "Net and Boom Defenses". maritime.org.
  2. "Notes on Anti-submarine Defenses ONI Publication No. 8". public2.nhhcaws.local.
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