U686

May 13, 1943-The keel of the U686 is laid in the Howaldtswerke shipyards in Hamburg.

September 23, 1944-The U686 project was cancelled and remained incomplete through the end of the war.

• Maximum displacement: 1,070 tons
• Top speed (surfaced): 17.7 knots
• Top speed (submerged): 7.6 knots
• Maximum depth: 722 feet
• Overall length: 220 feet
• Beam: 20.34 feet

Armament:

• 1-20 mm machine gun
• 1-88 mm deck gun
• 4-forward torpedo tubes
• 1-aft torpedo tube
• 13-magnetic mines