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| There are 101 entries in the glossary. |
| Pages: << < 1 2 3 4 5 6 7 |
| Hoveller | Person who assists in saving life or property from a vessel wrecked near the coast. Often applied to a small boat that lies in narrow waters ready to wait on a vessel, if required. |
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| Hovercraft | A vessel used for the transportation of passengers and cargo riding on a cushion of air formed under it. It is very maneuverable and is also amphibious. |
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| Hull | Casco
The main structural body or shell of the boat, not including the deck, keel, mast, or cabin. |
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| Hull Down | Said of a distant ship when her hull is below horizon and her masts and upper works are visible. |
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| Hull Speed | The maximum speed a hull can achieve without planing - the fastest a keelboat will go, usually dependent on length of the hull at the waterline |
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| Hulling | (1) Floating, but at mercy of wind and sea. (2) Piercing the hull with a projectile. (3) Taking in sail during a calm. |
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| Hurricane | A strong tropical revolving storm of force 12 or higher. In the northern hemisphere hurricanes revolve in a clockwise direction. In the southern hemisphere these storms revolve counterclockwise and are known as typhoons. |
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| Hydrofoil | A craft more or less similar to the Hovercraft insofar as it flies over water and thus eliminates friction between the water and the hull. Under acceleration it rises above water but remains in contact with the surface through supporting legs or foils. |
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| Hydrography | The study of the earth's waters. |
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| Hydrowire | Steel wire, used to support over-the-side sampling apparatus |
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| Hypothermia | A life-threatening condition where there is loss of body heat; the greatest danger for anyone in the water. As the body loses its heat, body functions slow down, and this can quickly lead to death. |
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