Glossary Archive

A hand-bearing compass is a portable compass held in the hand that is used to take bearings of objects or landmarks to determine their location relative to the user's position. This type of compass typically has a sighting mechanism to help accurately align the compass with the target. It may also have a built-in clinometer...

A hand-held pyrotechnic signalling device that produces a bright light and smoke when ignited, used for distress signalling at sea.  Hand-held flares are essential safety devices carried on boats and ships to signal distress or attract attention in emergencies. They are designed to be held in the hand and emit a bright red or orange...

A handrail is a rail designed to be grasped by the hand for support and stability. On a typical sailing yacht, one is usually mounted on the coachroof abovedeck, in the companionway and in the cabin below decks. On larger vessels, they are often located on the staircase, ramp, or walkway to provide a secure...

A loose block and tackle with a hook or tail on each end, which can be used wherever it is needed. Usually made up of one single and one double block.

A fitting or clip used to attach a sail, typically a headsail, to a stay or forestay on a sailing vessel. A hank is a small, often metal or plastic, clip or hook that is used to secure a sail, particularly a headsail such as a jib or genoa, to the forestay of a sailing...

A sheltered body of water where vessels can anchor or dock, offering protection from the elements, often also where ports are, providing facilities for loading, unloading, and maintenance. A harbour is a crucial feature in maritime activities, designed to provide a safe and secure area for ships, boats, and other vessels to anchor or dock....

To haul in the sheets to bring the sail closer to the centreline; the opposite of ease out

Turn towards the wind; sail closer to the wind.

The highest level of sea water that can be predicted to occur under average meteorological conditions and under any combination of astronomical influences. The Highest Astronomical Tide (HAT) is a critical reference point in marine navigation and coastal planning. It represents the maximum tidal height that can be anticipated based solely on predictable astronomical factors,...

An opening in the deck or bulkhead of a vessel, typically covered by a door or lid, providing access to the space below. A hatch is a crucial feature on any vessel, serving as an access point between different compartments or between the deck and the interior spaces below. Hatches are designed to be watertight...