Under the command of Lt. Cmdr. Maurice Jester, the cutter Icarus sank a German submarine in less than an hour.

Read more: Weapons That Are Too Dangerous For War The Imperial German Navy's U-boats were some of the deadliest vessels of the war, and they were responsible for sinking over 5,000 Allied ships.

The weapon would be the submarine, U-boats. On a desolate mud bank in the salt marshes of Kent lies the metal carcass of a First World War German U-boat. British ships were blockading German ports ...