unship

To unload cargo from a ship or other vessel.

To remove (an oar, a mast, etc.) from its normal position.

Dan sluiced the pen energetically, unshipped the table, set it up to dry in the moonlight, ran the red knife-blades through a wad of oakum, and began to sharpen them on a tiny grindstone […]

To throw from a horse; to unseat.

Ben hired a nag, but 'twould stumble of course, / And by falling endanger poor Ben, / Aye, and over her bows, sir, this crazy old horse / Would unship, and unship him again.

Before starting Mytton posted a wagoner at a spot on the "course" where the slope was steep, and gave him orders to cry "Whoa!" as the horses passed him. The man did so, with the result that two of the friends were unshipped by the abruptness of the stop to which their clumsy mounts came on hearing the familiar order.