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Ships - U-66

U-66, a German submarine, served as an escort to SMS Wolf on December 17, 1916.
Escort service provided Wolf with a way to observe and avoid ships of the British blockade. Sailing many miles ahead of the escorted ship, the submarine sailed with its deck awash, which made the boat practically invisible to other ships. Crewmen on the submarine were able to observe blockade ships in safety. Preset radio codes were used to pass information of the presence and location of these ships. Escorted vessels could then alter course to avoid the blockade ships.
Submarines doing escort work were not to engage the enemy. Their sole purposes were to observe and communicate any sightings. If significant enemy ships were encountered they were to radio the situation, submerge and return to Germany.
On escort duty the crew of the submarine would not likely see the escorted vessel during the voyage.

U-66 was built by Germaniawerft, at Kiel, Germany and commissioned on July 23, 1915. She was 226 feet in length, displaced 791 tons with a surface speed of 16 knots and a submerged speed of 10 knots. She had four bow and one stern torpedo tubes. A 105-mm naval cannon was mounted on the deck.
U-66 sailed under the command of Kapitanleutnant Thorwald von Bothmer with a crew of 39.
The U-66 was lost to a sea mine near Dogger Bank in the North Sea on September 3, 1917, all hands went down with the ship.

Naval Ranks
Ship Tonnage
SMS Wolf


NARA US National Archives Records Administration. A site dedicated to German U-boats.
Germany's High Sea Fleet in the World War U-66 is mentioned.

RAIDERS OF THE DEEP, by Lowell Thomas.

Last Revision: March 4, 2007.
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