On this page about Abaft:
Abaft is a nautical expression indicating a point that is behind a given part of a boat or ship. For example, "abaft the funnel" means behind the ship's funnel. (If not qualified, abaft means "behind the mid-point of a ship or group of ships".)
called a snowmast) stepped immediately abaft the mainmast from which a trysail with a boom was set, with...
brakes, (Sands) where she beat off her rudder and much of the run abaft, miraculously escaping utter loss...
forward of, and abaft, the conning tower. The suggestion was strongly endorsed by Commander Submarine...
command of Captain Irvine. The first torpedo struck the liner on the starboard side just abaft the...