Guest wrote: Bunkering connection?
thats the connection for her DFM (deisel fuel marine). During an underway replenishment, a steel line is managed across the two ships using one of those white anchors around that, in which a refueling line spans across. they ram it into that connection (the "D" shaped plate is covering the hole), there's a "clip" at the top to allow someone to quickly pull the connection in event of an emergency.
it sucked the entire time we did those, and we did them a lot off the coast of Africa, it was pretty neat the first one or two times. Unfortunately, they fire a small strand of line using a rifle to the ship, which about 20 guys haul in which is carrying a heavier "messenger" line, which hauls the steel "span wire" that the refueling rig rides in on. sometimes we wouldn't get the "slamming" action required to properly couple the rig and they'd have to let off and we'd have to try it several times.