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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 ...
This is a list of boat types. For sailing ships, see: List of sailing boat types
A small boat used to negotiate between enemies Catboat A sailing vessel characterized by a single mast carried well forward (i.e., near the bow of the boat) Clipper A fast multiple-masted sailing ship, generally used by merchants because of their speed capabilities Coastal defense ship A vessel built for coastal defense Cog
A hull is the watertight body of a ship, boat, submarine, or flying boat. The hull may open at the top (such as a dinghy), or it may be fully or partially covered with a deck. Atop the deck may be a deckhouse and other superstructures, such as a funnel, derrick, or mast. The line where the hull meets the water surface is called the waterline.
Lofting is particularly useful in boat building, when it is used to draw and cut pieces for hulls and keels. These are usually curved, often in three dimensions . Loftsmen at the mould lofts of shipyards were responsible for taking the dimensions and details from drawings and plans, and translating this information into templates, battens ...
In science the term is used in both ways. For example, Anderson (1997) stated more generally: "diagrams are pictorial, yet abstract, representations of information, and maps, line graphs, bar charts, engineering blueprints, and architects' sketches are all examples of diagrams, whereas photographs and video are not". [2]
English hoys tended to be single-masted, whereas Dutch hoys had two masts. Principally, and more so latterly, the hoy was a passenger or cargo boat. For the English, a hoy was a ship working in the Thames Estuary and southern North Sea in the manner of the Thames sailing barge of the nineteenth and early twentieth centuries. In the Netherlands ...
A cardboard boat race, sometimes known as a boat regatta, is a popular construction competition for people of all ages, with target audiences for competitions ranging from elementary-school students to college students and adults.