We (Base Mobile) received a 44 footer after that but I don't recall the number,I left to pick up a 82 footer in Seattle shorty after that and we brought around to Louisiana.
When we received the 44365 that meant sending the 44330 to the Great Lakes. We kept both 44s for quite a long time. The 365, for me, was the better boat.
I spent some time on the POINT HANNON as OIC. The 82s were a pleasure to handle.
I went through the Panama, round trip, on the EASTWIND, Deepfreeze '59. Some good memories.
I believe that was the call sign of the station it was assigned to. I recall seeing in an old version of a Coatings and Colors Manual that small boats assigned to a station were to have the station call sign painted on a deck in black and orange.
Call signs for ships/boats were/are 4 letters beginning with N. Shore stations were/are 3 letters such as (in 1957) NMC for San Francisco Radio and Point Reyes and other district shore stations had numbers assigned: Point Reyes LBS was NMC12.
Memory is a little foggy as to the exact time frame, but I remember using call signs on the small boats in the 13th District as late as 1957-58. The change to using hull numbers came in shortly after that.