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Marine Terms
| TERM | MEANING |
| Keel | The main center-line structural member, running fore and aft along the bottom of a ship, sometimes referred to as the backbone. |
| Knot | A unit of speed. The term "knot" means velocity in nautical miles per hour whether of a vessel or current. One nautical mile is roughly equivalent to 1.15 statute miles or 1.85 kilometers. |
