BBBB is obviously saying that he is lost. He believed the albatross was going to lead him to be found, but the Mariner (BTS, not Ken Griffey Jr.) shot the Albatross (with his crossbow). The birds appear and suddenly BBBB thinks it is clear sailing once again...but there are spirits that now haunt the board because of the crimes of The Mariner (still BTS). This place is surrounded by water but no one has anything to drink, and one by one the entire crew (King et al) will die. BTS shall find land again but alas he will be alone with only the skin of the Albatross hanging around his neck.
Learn to read and understand people it's not rocket science.
Instead of the cross, the albatross
About my neck was hung.