Curiosity....when Columbo and Charles Clay are downstairs in his boat, Columbo is on the phone with the coast guard. He then asks Mr. Clay what "jive" means.
The next shot is on top of .... WHAT boat? Is it upstairs on Clay's boat or did they go back to the Commodore's boat? It's a little unclear to me, but it seems to make sense they would be back on the Commodore's boat.