As Gargamel pointed out before, when there is a fatal or whatever accident at sea in a private boat, the first thing is to infoorm and call for help via the mandatory radio installed on every seagoing vessel with an engine, on emergency channel #16, giving assumed position and situation.
You do not bury anyone at sea, this is complete rubbish especially only a few miles from the coast in the baltic sea.
I just wonder what he thought about getting away with that