Peter gave the signal, and the carrion was cast overboard.
A glass bottle (presumably empty) is cast overboard and its fall watched.
But you must swear to me that it's not your own self you intend to cast overboard.
More than a word, perhaps: a great social engine: an anchor which, cast carelessly overboard, sinks deep and fast into the very bottom.
The body of the horse was cast overboard by the crew into the Atlantic Ocean.
We've searched every place on the ship and not found it, so it has to have been cast overboard - that's the only explanation!
Poor, unlucky Jonah cast overboard, head down among the seaweed and the fishes.
They cut away the starboard anchor and cast overboard the guns mounted on her port side.
Supplies of food and water ran short, and the cavalry horses were cast overboard into the sea.
The grappling hooks were cast overboard before they caught.