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A pusher, pusher craft, [1] pusher boat, pusher tug, or towboat, is a boat designed for pushing barges or car floats. In the United States, the industries that use these vessels refer to them as towboats. These vessels are characterized by a square bow and a shallow draft, and they typically have knees, which are large plates mounted to the bow ...
The Piaggio P.136 is an Italian twin-engine amphibian flying boat designed and manufactured by aircraft company Piaggio Aero.It is furnished with an all-metal hull, pusher propellers, a gull wing, and retractable landing gear.
Row boat; Rowing a trainera. Using oars individually, with both hands on a single oar, is sweep or sweep-oar rowing. [2] In this case the rowers are usually paired so that there is an oar on each side of the boat. Sweep-oared craft include: Coxless pair, Coxed pair, Coxless four, Coxed four, and Eight; Galley, Dromon, Trainera, and Trireme ...
Tugboat diesel engines typically produce 500 to 2,500 kW (~ 680 to 3,400 hp), but larger boats (used in deep waters) can have power ratings up to 20,000 kW (~ 27,200 hp) [citation needed]. Tugboats usually have an extreme power : tonnage -ratio; normal cargo and passenger ships have a P:T-ratio (in kW: GRT ) of 0.35 to 1.20, whereas large tugs ...
This is a list of boat types. For sailing ships, see: List of sailing boat types
1871 Planophore A Farman MF.11, showing the classic Farman configuration with engine between tail booms Buhl A-1 Autogyro, the first pusher autogyro The post-WWII Convair B-36 was unusual in its size, era, number of engines, and combining both propeller and jet propulsion, with six radial piston and four jet engines Typical of many UAVs, the General Atomics MQ-9 Reaper has a propeller at the ...
Pedal boat may refer to: Amphibious cycle, a pedal-powered vehicle capable of operation on both land and water; Hydrocycle, a bicycle-like watercraft with pontoons or a hydrofoil for buoyancy, and pedals for propulsion; Human-powered hydrofoil, a hydrofoil that can use pedals and various other means for propulsion
This trend of increase in wave-making resistance continues up to a Froude number of ~0.45 (speed/length ratio ~1.50), and peaks at a Froude number of ~0.50 (speed/length ratio ~1.70). This very sharp rise in resistance at speed/length ratio around 1.3 to 1.5 probably seemed insurmountable in early sailing ships and so became an apparent barrier.