v. To remove an oar or mast from its normal position
the GNU version of the Collaborative International Dictionary of English
v. To take out of a ship or vessel.
v. To remove or detach, as any part or implement, from its proper position or connection when in use.
The Century Dictionary and Cyclopedia
To take out of a ship or other water-craft: as, to unship goods or passengers. To remove from its place; specifically (nautical), to remove from a place where it is fixed or fitted: as, to unship an oar; to unship capstan-bars; to unship the tiller.
Word Usage
"Wait'll something really happens like they unship a chain onto the beefy bottom bracket and scar the clear coat."