U-155: 50m down the wreck of a submarine comes into view 25m below. Diver Greg Marshall can be seen on the wreck

U-155: 50m down the wreck of a submarine comes into view 25m below. Diver Greg Marshall can be seen on the wreck

U-155: 50m down the wreck of a submarine comes into view 25m below. Diver Greg Marshall can be seen on the wreck (Innes McCartney).