Akademik

(nautical) ladder to be lowered over a ship's side for coming aboard

1. : a rope ladder or set of steps to be lowered over a ship's side for use in coming aboard (as at sea)

2. : sea steps, jacob's ladder

a set of rungs fixed to the side of a vessel, forming a ladder from the weather deck to the water line.

[1900-05]

sea ladder,

1. a ladder made up of metal rungs fixed to a ship's side above the water line.

2. = Jacob's ladder (def. 2). (Cf. ↑Jacob's ladder)