Dive Site .  1 mile off shore from Grand harbor  “Torpedo boat S31”
Depth 66 m
Boat dive

During the afternoon of 9/5/42 intelligence through the Luftwaffe indicated that the WELSHMAN, which was making a solo run to Malta, would arrive at Valletta. S-31, S-34, and S-61 were first to lay a minefield stretching out off Sliema point in order to cover this side. The three MTB had to regroup and go eastwards in search for WELSHMAN, but suddenly one minute after the lay had stopped S-31 exploded a mine; probably the one S- 31 had just laid and had cut loose from its moorings. She sunk. t sank to a depth of 66m fully intact with torpedoes in the torpedo tubes ready for launch.