house

To house is to secure, lower, or stow deck equipment, rigging, or machinery in a way that protects it from damage and prevents it from becoming a hazard during rough weather or transit. When you house something aboard ship, you are deliberately moving it from its working position into a safe, protected location, usually below deck or lashed down firmly against the rail or deckhouse.

The term applies most commonly to masts and spars on traditional or hybrid vessels. A mast is housed by lowering it to lie horizontally, either into a crutch or against the deck, where its height and wind-catching profile no longer threaten stability in heavy seas. Similarly, booms, gaffs, and topmasts are housed when not in use. On modern cargo ships and container vessels, you might house deck cranes, ventilation fans, or hatch covers by retracting or securing them to reduce wind loading and prevent shifting or damage.

Housing differs from simply securing in place. To lash a cargo net or tarp requires you to make it immobile where it sits; to house it means to stow it entirely away, reducing its exposure to weather and sea spray. A ventilation cowl might be lashed down, but a boom is housed. The distinction matters because housed gear takes up internal volume or uses dedicated stowage space, whereas lashed gear remains visible and accessible on deck.

Failure to house equipment properly when entering heavy weather is a serious seamanship error. Unsecured or partially housed booms, davits, or hatch covers can shift across the deck, causing injury, puncturing hulls, or fouling rigging. In older logs and maritime manuals, captains' orders to house the topmasts or strike the yards signal preparation for gales. Modern regulations for certain vessel classes specify when certain structures must be housed based on wind speed and sea state forecasts.

The verb originates from the noun house as shelter or enclosed space. To house is literally to put something into or treat it as if it were inside a house, protected from the elements. In shipyard vocabulary, housing also refers to the fabrication or installation of permanent structures into a ship's hull or superstructure, though this sense is less common in active maritime work.