Oh yes, corks of course. Thanks Reece.
I don't consider small ships worth a torp, unless I'm trying to take out a destroyer screen. But many thanks for your targeting area tips.
A few nights ago I had encouraging success when shooting a medium-sized merchant near the stern, which caused an explosion after just 250 rounds. However, I've just encountered another one of these seemingly indestructible smaller cargo ships and have emptied most of my AP rounds into the side of its stern, just below the waterline, with no effect.
What am I doing wrong? Do rounds that hit the water very near the hull fail to cause damage? Should I aim for underneath the funnel? Do fires on deck cause any damage whatsover?
And does ramming cause damage? I reduced a medium-sized cargo to limping across the Channel with its bow dipping *under* water, yet it would not sink. In my frustration (and out of ammo) I rammed the side of its stern at full speed but failed to inflict any discernable damage either on the cargo ship or, weirdly, my U-Boat.
As ever, my thanks again for your thoughts. God I love this sim.