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A tugboat, or tug, is a boat used to maneuver large ships in harbours, over the open sea, or through rivers and canals. They also tow barges , disabled ships, and oil rigs . Equipped with powerful engines producing thousands of horsepower, extensive rigging equipment, and a fender of tires for protection, tugboats can push or tow large vessels ...
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Friendship Sloop in c. 1920 Fiberglass Friendship Sloop Bay Lady (launched in 1979) Diagram of a Friendship Sloop. The Friendship sloop, also known as a Muscongus Bay sloop or lobster sloop, is a gaff-rigged working boat design that originated in Friendship, Maine around 1880 and has survived as a traditional-style sailboat.
The stern is opposite the bow, the outside (offboard) of the front of the boat. The term derives from the Old English æftan (“behind”). Adrift: floating in the water without propulsion. Aground: resting on the shore or wedged against the sea floor. [3] Ahull: with sails furled and helm lashed alee. [4] Alee: on or toward the lee (the ...
The bottom is flat in a river junk with no keel (similar to a sampan), so that the boat relies on a daggerboard, [16] leeboard or very large rudder to prevent the boat from slipping sideways in the water. [17] The internal bulkheads are characteristic of junks, providing interior compartments and strengthening the ship.
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The multi-chine hull approximates a curved hull form. It has less drag than a flat-bottom boat. Multi chines are more complex to build but produce a more seaworthy hull form. They are usually displacement hulls. V or arc-bottom chine boats have a V shape between 6° and 23°. This is called the deadrise angle. The flatter shape of a 6-degree ...