Originally Posted by swampu
My current boat is small enough that i don't need to have it documented and therefore don't need a captains license or commercial insurance.
I don't believe the CFRs covering licenses say anything about insurance (though I'm not positive about that).
I assume you do have an insurance policy, but I'm going to guess that it specifically excludes commercial operation.
Then there's the question of how your 50x20 barge with excavator is insured, and frankly I have no idea what that would require.