"stern or aftermost deck of a ship," c. 1400, from Old French poupe "stern of a ship"… See origin and meaning of poop.
Deck-chair(1844) so called because they were used on ocean liners.On deck(by 1740) was in nautical use especially "ready for action or duty;" extended sense in baseball, of a batter waiting a turn at the plate, is by 1867. Toclear the deck(1852) is to prepare a ship for action;...
1620s, "the part of the spar-deck of a man-of-war between the poop and the main-mast," originally "a smaller deck above the... boom increase in commercial or other activity," 1873, sometimes said to be from boom (n.1) in the specific nautical meaning "a long spar... cleat In...
1620s, "the part of the spar-deck of a man-of-war between the poop and the main-mast," originally "a smaller deck above the half-deck," covering about a quarter of the vessel [OED], from quarter (n.1). "It is used as a promenade by the officers only" [Century Dictionary], ...