|
Rowers At The 2016 Summer Olympics
Rowing is the act of propelling a human-powered watercraft using the sweeping motions of oars to displace water and generate reactional propulsion. Rowing is functionally similar to paddling, but rowing requires oars to be mechanically attached to the boat, and the rower drives the oar like a lever, exerting force in the ''same'' direction as the boat's travel; while paddles are completely hand-held and have no attachment to the boat, and are driven like a cantilever, exerting force ''opposite'' to the intended direction of the boat. In some strict terminologies, using oars for propulsion may be termed either "pulling" or "rowing", with different definitions for each. Where these strict terminologies are used, the definitions are reversed depending on the context. On saltwater a "pulling boat" has each person working one oar on one side, alternating port and starboard along the length of the boat; whilst "rowing" means each person operates two oars, one on each side of the b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portland Pudgy Safety Dinghy, Rowing
Portland most commonly refers to: * Portland, Oregon, the largest city in the state of Oregon, in the Pacific Northwest region of the United States * Portland, Maine, the largest city in the state of Maine, in the New England region of the northeastern United States * Isle of Portland, England, a tied island in the English Channel Portland may also refer to: Places and establishments Australia *Cape Portland, Tasmania, a cape on the north-eastern tip of Tasmania *Portland, New South Wales, a town with the first Australian cement works *Portland, Victoria, a regional city and port *City of Portland (Victoria), a former local government area (LGA) Canada *Port Lands, Toronto, Ontario (sometimes mistakenly spelled "Portlands"), the eastern part of the Toronto waterfront *Portland Island (British Columbia), a small island off the coast of Vancouver island *Portland Inlet, an inlet between southeastern Alaska and British Columbia **Portland Canal, an arm of Portland Inlet *Portland Es ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boat Racing
Boat racing is a sport in which boats, or other types of watercraft, race on water. Boat racing powered by oars is recorded as having occurred in ancient Egypt, and it is likely that people have engaged in races involving boats and other water-borne craft for as long as such watercraft have existed. A regatta is a series of boat races. The term comes from the Venetian language, with ''regata'' meaning "contest" and typically describes racing events of rowed or sailed water craft, although some powerboat race series are also called regattas. A regatta often includes social and promotional activities which surround the racing event, and except in the case of boat type (or "class") championships, is usually named for the town or venue where the event takes place. Although regattas are typically amateur competitions, they are usually formally structured events, with comprehensive rules describing the schedule and procedures of the event. Regattas may be organized as champions ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rowing 305598
Rowing is the act of propelling a human-powered watercraft using the sweeping motions of oars to displace water and generate reactional propulsion. Rowing is functionally similar to paddling, but rowing requires oars to be mechanically attached to the boat, and the rower drives the oar like a lever, exerting force in the ''same'' direction as the boat's travel; while paddles are completely hand-held and have no attachment to the boat, and are driven like a cantilever, exerting force ''opposite'' to the intended direction of the boat. In some strict terminologies, using oars for propulsion may be termed either "pulling" or "rowing", with different definitions for each. Where these strict terminologies are used, the definitions are reversed depending on the context. On saltwater a "pulling boat" has each person working one oar on one side, alternating port and starboard along the length of the boat; whilst "rowing" means each person operates two oars, one on each side of the b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steamboat
A steamboat is a boat that is marine propulsion, propelled primarily by marine steam engine, steam power, typically driving propellers or Paddle steamer, paddlewheels. Steamboats sometimes use the ship prefix, prefix designation SS, S.S. or S/S (for 'Screw Steamer') or PS (for 'Paddle Steamer'); however, these designations are most often used for steamships. The term ''steamboat'' is used to refer to smaller, insular, steam-powered boats working on lakes and rivers, particularly riverboats. As using steam became more reliable, steam power became applied to larger, ocean-going vessels. Background Limitations of the Newcomen steam engine Early steamboat designs used Newcomen atmospheric engine, Newcomen steam engines. These engines were large, heavy, and produced little power, which resulted in an unfavorable power-to-weight ratio. The Newcomen engine also produced a reciprocating or rocking motion because it was designed for pumping. The piston stroke was caused by a water jet i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Rowing 305598")
