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 (ə-thwôrt′shĭps′) also a·thwart·ship (-shĭp′)
Across a ship from side to side.


(Nautical Terms) nautical from one side to the other of a vessel at right angles to the keel



from one side of a ship to the other.
References in classic literature ?
At all times except when whales were alongside, this bench was securely lashed athwartships against the rear of the Try-works.
Now I’ve seen many a man, for over-shooting his reckoning, as I told ye moored head and starn, where he couldn’t so much as heave his broadside round, and mayhap a stopper clapped on his tongue too, in the shape of a pump-bolt lashed athwartship his jaws, all the same as an outrigger along side of a taffrel-rail.
The Nan-Shan had an athwartship coal-bunker, which, being at times used as cargo space, communicated by an iron door with the fore 'tween-deck.
Elsewhere in the hull there's room for a 2-4-metre dinghy to be stored partially deflated athwartships in the optional transom garage, which it shares with the liferaft.
Fitted in box launchers mounted athwartships, the C-802A is capable of striking targets up to 180 kilometres away.