HMS Thetis was a Group 1 T-class submarine of the Royal Navy which sank during sea trials in Liverpool Bay, England on 1 June 1939. After being salvaged and repaired, the boat was recommissioned as HM
HMS Thunderbolt returning from patrol during WWII
THETIS badge 1
THUNDERBOLT badge 1
Mersey Docks & Harbour Board salvage vessel Vigilant and the sunken Thetis's raised stern