unstepping

"I know my father is right, whatever he does, and I hope to follow his example," answered Michael, unstepping the mast, which he let fall on his shoulder preparatory to carrying it up to the shed.

Michael Penguyne Fisher Life on the Cornish Coast William Henry Giles Kingston 1847

This we accomplished, and lowering our sail, and unstepping our mast, we got close in under the trees.

The Wanderers Adventures in the Wilds of Trinidad and Orinoco William Henry Giles Kingston 1847

And now the wind fell so that it was not until the following morning that I steered into a little, green bay where trees grew to the very water's edge and so dense that, unstepping my mast, I began paddling along this green barrier, looking for some likely opening, and thus presently came on a narrow cleft 'mid the green where ran a small creek roofed in with branches, vines and twining boughs, into which I urged my boat forthwith (and no little to-do) and passed immediately from the hot glare of sun into the cool shade of trees and tangled thickets.

Martin Conisby's Vengeance Jeffery Farnol 1915

We should fetch it with one tack, and by unstepping our masts very probably the boat will not be seen, or our hut either, unless the Frenchmen narrowly examine the island. "

The Rival Crusoes William Henry Giles Kingston 1847

"This is a snug berth for the boat, Jack," observed the mate, when he had hauled it into the place mentioned, "and by unstepping the mast, a passer-by would not suspect such a craft of lying in it.

Jack Tier James Fenimore Cooper 1820