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Clipper 23
The Clipper 23, also called the Clipper Marine 23, is an American trailerable sailboat that was designed by William Crealock and first built in 1976.Henkel, Steve: ''The Sailor's Book of Small Cruising Sailboats'', page 160. International Marine/McGraw-Hill, 2010. Production The design was initially built by Clipper Marine of Santa Ana, California, United States, starting in 1976. After that company went out of business in 1976 a twin-keel version was built by Sawyer Marine in Canada starting in 1984, but it is now out of production. Design The Clipper 23 is a recreational keelboat, built predominantly of fiberglass, with wood trim. It has a masthead sloop rig, a clipper bow, a reverse transom, a transom-hung, non-folding rudder controlled by a tiller and a retractable swing keel or twin keels. It displaces and carries of cast iron ballast. The boat has a draft of with the swing keel extended and with it retracted, allowing ground transportation on a trailer. The twi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Crealock
William Ion Belton Crealock (23 August 1920 – 26 September 2009) was a yacht designer and author. He was one of the world's leading yacht designers from the 1960s through the 1990s, and his yachts were owned by the famous and wealthy, including Walter Cronkite and William Hurt. Early years Crealock was born in Westcliff-on-Sea, Essex, England in 1920. He attended the Glasgow University where he studied naval architecture and worked at the Glasgow shipyard during World War II. "Vagabonding Under Sail" In 1948, Crealock and three friends pooled their money, purchased an old cutter, and set out "to study the behavior of boats at sea." Crealock arrived in the United States after "an unhurried two-year journey" in a small sailboat. Crealock wrote about his adventures sailing with his friends in his first book, "Vagabonding Under Sail." Crealock's second book, "Towards Tahiti" (published elsewhere as "Cloud of Islands") relates the story of a lengthy cruise from Panama, via the Galap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Keelboat
A keelboat is a riverine cargo-capable working boat, or a small- to mid-sized recreational sailing yacht. The boats in the first category have shallow structural keels, and are nearly flat-bottomed and often used leeboards if forced in open water, while modern recreational keelboats have prominent fixed fin keels, and considerable draft. The two terms may draw from cognate words with different final meaning. A keep boat, keelboat, or keel-boat is a type of usually long, narrow cigar-shaped riverboat, or unsheltered water barge which is sometimes also called a poleboat—that is built about a slight keel and is designed as a boat built for the navigation of rivers, shallow lakes, and sometimes canals that were commonly used in America including use in great numbers by settlers making their way west in the century-plus of wide-open western American frontiers. They were also used extensively for transporting cargo to market, and for exploration and trading expeditions, for wat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clipper 21
The Clipper 21, also called the Clipper Marine 21 and the Clipper Mark 21, is an American trailerable sailboat that was designed by William Crealock and first built in 1971.Henkel, Steve: ''The Sailor's Book of Small Cruising Sailboats'', page 93. International Marine/McGraw-Hill, 2010. Production The design was built by Clipper Marine of Santa Ana, California, United States, from 1971 to 1977, but it is now out of production. Design The Clipper 21 is a recreational keelboat, built predominantly of fiberglass, with wood trim. It has a fractional sloop or optional masthead sloop rig, a clipper bow, a plumb transom, a transom-hung rudder controlled by a tiller and a retractable swing keel. It displaces and carries of cast iron ballast. It has foam flotation, making it unsinkable. A version with a flush deck was also built. The boat has a draft of with the keel extended and with it retracted, allowing beaching or ground transportation on a trailer. The boat is normally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Sailing Boat Types
The following is a partial list of sailboat types and sailing classes, including keelboats, dinghies and multihull ( catamarans and trimarans). Olympic classes World Sailing Classes Historically known as the IYRU (International Yacht Racing Union), the organization evolved into the ISAF (International Sailing Federation) in 1996, and as of December 2015 is now World Sailing. Dinghies Keelboats & yachts Multihulls Boards Radio-controlled Former World Sailing-classes Dinghies Keelboats & yachts Multihulls Boards Other classes and sailboat types Dinghies Keelboats & yachts Multihulls See also * Classic dinghy classes * List of boat types * List of historical ship types * List of keelboat classes designed before 1970 * Olympic sailing classes * Small-craft sailing * Clansman 30 Notes References {{DEFAULTSORT:Sailing boat types Types * Boat types A boat is a watercraft of a large range of types and sizes, but general ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hull Speed
Hull speed or displacement speed is the speed at which the wavelength of a vessel's bow wave is equal to the waterline length of the vessel. As boat speed increases from rest, the wavelength of the bow wave increases, and usually its crest-to-trough dimension (height) increases as well. When hull speed is exceeded, a vessel in displacement mode will appear to be climbing up the back of its bow wave. From a technical perspective, at hull speed the bow and stern waves interfere constructively, creating relatively large waves, and thus a relatively large value of wave drag. Ship drag for a displacement hull increases smoothly with speed as hull speed is approached and exceeded, often with no noticeable inflection at hull speed. The concept of hull speed is not used in modern naval architecture, where considerations of speed/length ratio or Froude number are considered more helpful. Background As a ship moves in the water, it creates standing waves that oppose its movement. Thi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Performance Handicap Racing Fleet
Performance Handicap Racing Fleet (PHRF) is a handicapping system used for yacht racing in North America. It allows dissimilar classes of sailboats to be raced against each other. The aim is to cancel out the inherent advantages and disadvantages of each class of boats, so that results reflect crew skill rather than equipment superiority. PHRF is used mainly for larger sailboats (i.e., 7 meters and above). For dinghy racing, the Portsmouth yardstick handicapping system is more likely to be used. The handicap number assigned to a class of yachts is based on the yacht's speed relative to a theoretical yacht with a rating of 0. A yacht's handicap, or rating, is the number of seconds per mile traveled that the yacht in question should be behind the theoretical yacht. Most boats have a positive PHRF rating, but some very fast boats have a negative PHRF rating. If Boat A has a PHRF rating of 15 and Boat B has a rating of 30 and they compete on a 1 mile course, Boat A should finish a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Head (watercraft)
The head (pl. heads) is a ship's toilet. The name derives from sailing ships in which the toilet area for the regular sailors was placed at the head or bow of the ship. Design In sailing ships, the toilet was placed in the bow somewhat above the water line with vents or slots cut near the floor level allowing normal wave action to wash out the facility. Only the captain had a private toilet near his quarters, at the stern of the ship in the quarter gallery. The plans of 18th-century naval ships do not reveal the construction of toilet facilities when the ships were first built. The Journal of Aaron Thomas aboard HMS ''Lapwing'' in the Caribbean Sea in the 1790s records that a canvas tube was attached, presumably by the ship's sailmaker, to a superstructure beside the bowsprit near the figurehead, ending just above the normal waterline. In many modern boats, the heads look similar to seated flush toilets but use a system of valves and pumps that brings sea water into the to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quarter Berth
A berth is a bed or sleeping accommodation on vehicles. Space accommodations have contributed to certain common design elements of berths. Beds in boats or ships While beds on large ships are little different from those on shore, the lack of space on smaller yachts means that bunks must be fit in wherever possible. Some of these berths have specific names: ;V-berth: Frequently yachts have a bed in the extreme forward end of the hull (usually in a separate cabin called the forepeak). Because of the shape of the hull this bed is basically triangular, though most also have a triangular notch cut out of the middle of the aft end, splitting it partially into two separate beds and making it more of a V shape, hence the name. This notch can usually be filled in with a detachable board and cushion, creating something more like a double bed (though with drastically reduced space for the feet; 12" wide is typical). The term "V-berth" is not widely used in the UK, instead the cabin a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
"V"-berth
A berth is a bed or sleeping accommodation on vehicles. Space accommodations have contributed to certain common design elements of berths. Beds in boats or ships While beds on large ships are little different from those on shore, the lack of space on smaller yachts means that bunks must be fit in wherever possible. Some of these berths have specific names: ;V-berth: Frequently yachts have a bed in the extreme forward end of the hull (usually in a separate cabin called the forepeak). Because of the shape of the hull this bed is basically triangular, though most also have a triangular notch cut out of the middle of the aft end, splitting it partially into two separate beds and making it more of a V shape, hence the name. This notch can usually be filled in with a detachable board and cushion, creating something more like a double bed (though with drastically reduced space for the feet; 12" wide is typical). The term "V-berth" is not widely used in the UK, instead the cabin a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boat Trailer
A boat trailer is designed to launch, retrieve, carry and sometimes store boats. Commercial boat trailers Commercial hydraulic boat trailers are used by marinas, boat yards, boat haulers, boat dealers and boat builders. Generally this type of trailer is not used for storage of the boat. Self-propelled Self-propelled boat movers are not strictly trailers, but hydraulically operated boat movers, with their own tractor unit. They share all of the features of hydraulic boat trailers. Non-commercial boat trailers This type of trailer is usually used by the boat owner/operator. The trailer is also used for storage. * Roll-on, also known as a "Roller style trailer", uses rubber and/or polyurethane rollers for ease of launching and loading a boat. * Glide-path, also known as a "Float-on style trailer", allows the boat to float onto the trailer; after the trailer has been partially submerged (usually of the trailer). Since its inception, it has become quite popular compared to th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cast Iron
Cast iron is a class of iron–carbon alloys with a carbon content more than 2%. Its usefulness derives from its relatively low melting temperature. The alloy constituents affect its color when fractured: white cast iron has carbide impurities which allow cracks to pass straight through, grey cast iron has graphite flakes which deflect a passing crack and initiate countless new cracks as the material breaks, and ductile cast iron has spherical graphite "nodules" which stop the crack from further progressing. Carbon (C), ranging from 1.8 to 4 wt%, and silicon (Si), 1–3 wt%, are the main alloying elements of cast iron. Iron alloys with lower carbon content are known as steel. Cast iron tends to be brittle, except for malleable cast irons. With its relatively low melting point, good fluidity, castability, excellent machinability, resistance to deformation and wear resistance, cast irons have become an engineering material with a wide range of applications and are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Twin Keel
Twin keels or bilge keels are two keels that emerge at an angle from the hull of a sailboat (and some ships), at or near the bilge. The angle allows the boat to have a shallower draft while still allowing for minimum leeway while sailing. The placement of the twin keels also allows the boat to stand upright when out of the water without additional support, as opposed to a single-keeled boat that would fall over if water levels dropped. Twin-keeled boats are typically used in coastal areas that experience extreme changes in tide. When the tide is low, the boat will sit on her keels and remain stable and upright. This configuration is especially useful for sailors in Britain and might in the future be applied in the parts of the Atlantic North America that are extremely tidal such as the Fundy waters that are shared by Maine, New Brunswick, and Nova Scotia. Twin keels are meant to make sailing safer and easier in shallow or extremely tidal waters while preserving the stability ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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