National Museum of the U.S. Navy

U-Boat Engagements:  Mediterranean

USS Lydonia (SP-700), with a convoy, encountered UB-70 on May 8, 1918 on her way to Gibraltar from Bizerte, Tunisia.  With the Royal Navy destroyer Basilik, the patrol craft made coordinated depth charge attacks, after the British merchant ship Ingleside was destroyed by a torpedo.   After 15 minutes of running battle, the Lydonia attack ended and the survivors of Ingleside were rescued.  Heavy seas prevented an immediate assessment of possible damage to the submarine, but later evaluations credited Lydonia and Basilik with sinking UB-70. 

Image:  NH 102839:  USS Lydonia (SP-700) in Caribbean port, 1919.   U.S. Naval History and Heritage Command Photograph.