What does it mean to "Secure" in nautical terms?

In nautical terms, to "secure" means to fasten or lock up, finishing up tasks related to managing equipment, lines, or gear on a vessel. This involves ensuring that all items are properly stowed and secured to prevent movement and potential hazards during transit or adverse weather conditions. When a vessel arrives at port, for instance, crew members will secure lines to the dock, tying the vessel so that it does not drift away.

The other choices do touch on important activities related to boating—navigating to safety is crucial during voyages, preparing sails is essential for efficient sailing, and cleaning the deck is important for maintenance and safety onboard. However, none of these accurately capture the specific meaning of "secure" as it relates to the act of fastening or locking down items to ensure stability and safety while at sea or docked.