| Tiller - The handle for steering an outboard motor |
| Transom - The squared-off section of the stern |
| Trim - To adjust the running attitude of the boat by moving the drive unit up or down (out or in) |
| Trolling - A method of fishing where several lures are towed behind the boat and retrieved as strikes are made |
| Trolling Motor - A small electric fishing motor, typically mounted on the bow, that is used as secondary means of propulsion, for boat positioning and to maneuver quietly in fishing areas |
| Underway - When the boat is moving and not moored or anchored |
| Upwind - Moving against the wind |
| V-Hull or Vee-Hull - A hull with a v-shaped bottom, designed to split the waves and soften the ride |
| Wake - The waves a boat leaves behind when it's moving |
| Walk-Through - The passageway through the windshield from the cockpit to the bow |
| Waterline - Where the surface of the water meets the sides of the boat |
| Winch - The revolving crank on a trailer allowing you to upload your boat |