Tug and barge Seatime

I have a question for the Mariners out there I have a friend that works on a tug that works with 3 barges they take 1 barge from Puerto Rico to west palm beach drop it off there and pick up a loaded one bring it to Puerto Rico drop it off in Puerto Rico pick up an empty one in Puerto Rico back to west palm beach so the question is if the company will not put the barges on his letter of seatime how is he supposed to get credit for it to increase his tonnage on his 3rd mate unlimited with a tonnage limitation of 2000 he wants to get unlimited 3rd and get 3rd mate 2000 off

So a brief back ground on the Mariner I’m speaking of has a 3rd mate less than 2000 GRT oceans

I believe they have to put the combined tonnage on his letter but that doesn’t really mean he is going to get the restriction removed…

So I know that people have done this but you actually aren’t supposed to be able to get a full unlimited tonnage license with barge time. Combined tug and barge time only counts for half the required unlimited tonnage time required by the CFRs.