CATAMARAN yacht

[aukepalmhof]

Most probably is one of the five Tiama Catamarans depict on this stamp, they were introduced to the tourist market in Barbados over 20 years ago.
The name Tiami has always been associated with the very best in coastal cruising on Barbados.

http://www.shoestringbarbados.com/cruises1.htm

Small recreational catamarans are typically designed to be launched and landed from a beach. They will come to rest on their keels without heeling over like a monohull. Additionally, their rudders can be retracted to the depth of their keels, which protects the fragile rudders from damage when the vessel is run aground.
Larger Catamarans make good cruising and long distance boats: The Race (around the world, in 2001) was won by the giant catamaran CLUP MED skippered by Grant Dalton. It went round the earth in 62 days at an average speed of eighteen knots.
Although the principles of sailing are the same for both catamarans and monohulls, there are some "peculiarities" to sailing catamarans. For example:
• Catamarans can be harder to tack if they don't have dagger boards or centre boards. All sailboats must resist lateral movement in order to sail in directions other than downwind and they do this by either the hull itself or else dagger boards or centre boards. Also, because catamarans are lighter in proportion to their sail size they have less momentum to carry them through the turn when they are head to wind. Correct use of the jib sail (back-filling the jib to pull the bow around) is often essential in successfully completing a tack without ending up stuck in irons (pointing dead into the wind and sailing backwards, see: No-Go Zone).
• They have a higher speed than monohulls of the same size due to the more needle-like hull shape having reduced hydrodynamic drag.
• Catamarans are slower turning than monohulls as hull spacing is increased and hulls are narrowed to a more needle like shape.
• Catamarans are less likely to capsize in the classic "beam-wise" manner but often have a tendency to pitchpole instead—where the leeward (downwind) bow sinks into the water and the boat 'trips' over forward, leading to a capsize. Other sources state that trimarans are more prone to "pitchpole", while catamarans can flip sideways. Either way, it is caused by sail overpowering (and not moving weight aft fast enough for smaller vessels). "Trim a monohull for the lull, ride the puff; trim a multihull for the puff, wait the lull.
Teaching for new sailors is usually carried out in monohulls as they are thought easier to learn to sail, a mixture of all the differences mentioned probably contributes to this.
Catamarans, and multihulls in general, are normally faster than single-hull boats for four reasons:
• The major increase in speed over a monohull is due to the hull shape. A monohull with a traditional displacement hull has a quickly building hydrodynamic drag barrier which set the theoretical hull speed based on square root of "length at waterline". Catamarans make use of needle like hulls which significantly reduce this source of friction.
• Catamarans are typically lighter and thus have less displacement and drag. This is because they don't require a keel counterweight since righting moment is derived from the spacing between multiple hulls.
• Catamarans have a wider beam (the distance from one side of the boat to the other), which makes them more stable and therefore able to carry more sail area per unit of length than an equivalent monohull.
• The greater stability means that the sail is more likely to stay upright in a gust, drawing more power than a monohull's sail which is more likely to heel (lean) over.
A catamaran is most likely to achieve its maximum speed when its forward motion is not unduly disturbed by wave action. This is achieved in waters where the wavelength of the waves is somewhat greater than the waterline length of the hulls, or it is achieved by the design piercing the waves. In either case pitching (rocking horse-like motion) is reduced. This has led to it being said that catamarans are especially favourable in coastal waters, where the often sheltered waters permit the boat to reach and maintain its maximum speed.
Barbados 1998 10c sg1129, scott?
Togo 2002 750F sg?, scott2069f
Source: Wikipedia

[Archie]

In custom made in the yacht that is designed in great detail that can a good comfort, style and safety. Every yacht that boast high performance in sailing, luxurious accommodation, expansive living spaces and extravagant and innovative design features.




family sailing holidays

[Arturo]

Catamaran (Yacht)

Central Africa 1989, S.G.?, Scott: 917

Qatar 2005, S.G.?, Scott: 992

Qatar 2005, S.G.?, Scott: 994

[FrenchShips]

Scott: 992 is the maxi-catamaran Doha 2006, former Club Med winner of "The Race".
A picture on http://philippe.hillion1.free.fr/Images ... ha2006.htm

[aukepalmhof]

Central Africa 1989 200F is the STARS & STRIPES see: http://www.shipstamps.co.uk/forum/viewt ... pes#p11793
Qatar 2005 scott994 CHEYENNE see: http://www.shipstamps.co.uk/forum/viewt ... nne#p16216
Oatar 2005 scott 992 is the DOHA 2006 see: https://en.wikipedia.org/wiki/Doha_2006_(yacht)