IPA: /ˈkɒkˌboʊt/
KK: /kɑkˌboʊt/
A small boat that is often used to transport people or supplies between a larger ship and the shore.
The sailors used the cockboat to bring fresh water from the shore to the ship.
Cockboat is formed from "cock" (from Middle English *cok*, meaning a small boat or a small vessel) and "boat" (from Old English *bāt*, meaning a small watercraft). The term refers to a small boat, often used for rowing or sailing.
Think of a 'small vessel' ('cock') that is specifically a 'watercraft' ('boat') — that's what a cockboat is.
No commonly confused words.