I think there is a general misconception with regard to marine salvage.

You can't just claim ownership or salvage of any vessel that is adrift or
abandon.

Different nations and different rules but in general, you have to attempt to
contact the owner and he has to agree that you can salvage his vessel. In
most cases an insurance company is involved and may grant you that right..

If you rescue or salvage a vessel without any attempt to contact the owner
for permission, you may only recover your cost of the salvage plus a little
for your time and effort.

Often when a vessel is on the high seas, the owner and the salvager will
agree to let a Admiralty Court decide how much the salvager would get.

I know a fellow who hangs out in the Caribbean Sea on a large old tug, with
the standard Admiralty Court release/agreement papers all ready.. "You need
help? Sign Here". He also carries 30,000 gal of diesel fuel, just in case
someone runs out of fuel on their run from Columbia to ?? (and you thought
you were paying too much at the marina pump??)

I don't claim to know all the salvage rules but the owner still has rights..

Steve
s/v Good Intentions