Noah Webster
Shipboard
SHIP'BOARD, adverb [ship and board.]
1. To go on shipboard or a shipboard is to go aboard; to enter a ship; to embark; literally, to go over the side. It is a peculiar phrase, and not much used. Seamen say, to go aboard or on board.
To be on ship board, to be in a ship; but seamen generally say, to go aboard or on board.
2. noun The pland of a ship. [Not now used.]
SHIP'-BOY, noun A boy that serves on board of a ship.