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- Sailboat Guide
1974 Piver Trimaran
- Description
Seller's Description
Piver Trimaran restored for smooth sailing and living off the grid. Two water tanks. Two gas tanks. All premium electronics, mast, rigging, plumbing, fittings, and accessories are top of the line products. The total value is over $100,000.
Set up for single handed. Steers easily by tiller w/auto. Steering wheel turns outboard motor. Three narrow hulls allow faster sailing. Hull speed is approx half the wind speed. New EPDM flexible waterproof top with white silicone to keep you dry. Air conditioner.
Equipment: Electronics: Autopilot, All wiring, switch plates, monitors, alarms, lights are new. Garmin Radar Navigation system AIS one way & AIS two way Computer monitor Two VHF radios HD Television with antenna on mast
2 Fish Finder/1 depth finder Stereo, radio, Sirius, CD, waterproof speakers topside and below. Wired for security cameras (we have the cameras). Approx. value $40K new.
12 Porta-Bote dinghy; 6 HP Evinrude.
Newish Suzuki 20 horsepower efi outboard motor low hours. with remote controlled electric lift built-in stern castle. Hardtop on aft deck w/400 watts of solar panels w/Inverter Four AGM Batteries Battery to o/b & windlass. Dyneema halyards, 2 new tinted glass hatches Mast installed with Wifi, Television, AIS system, LED lighting, anemometer Mast has new steps (locks in & out). Shroud tension testing gauge. LED Underwater lights, docking lights, deck lights, cockpit lights (day & night) Windlass, 55lb Vulcan Anchor w/bridle, 55FX storm anchor, 18ft parachute w/deployment bag. Main sail, jib, hank on jib, storm jib, spinnaker, CDI furler w/125% jib Ryobi 1900 watts, gas, 110 volt generator.
Double Sinks, Microwave, single cooktop induction stove. New bilge pumps. New plumbing throughout. Refrigerator/freezer.
Rig and Sails
Auxilary power, accomodations, calculations.
The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.
Classic hull speed formula:
Hull Speed = 1.34 x √LWL
Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio .311 Hull Speed = Max Speed/Length ratio x √LWL
Sail Area / Displacement Ratio
A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.
SA/D = SA ÷ (D ÷ 64) 2/3
- SA : Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay).
- D : Displacement in pounds.
Ballast / Displacement Ratio
A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.
Ballast / Displacement * 100
Displacement / Length Ratio
A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.
D/L = (D ÷ 2240) ÷ (0.01 x LWL)³
- D: Displacement of the boat in pounds.
- LWL: Waterline length in feet
Comfort Ratio
This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.
Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam 1.33 )
- D: Displacement of the boat in pounds
- LOA: Length overall in feet
- Beam: Width of boat at the widest point in feet
Capsize Screening Formula
This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.
CSV = Beam ÷ ³√(D / 64)
The TYPHOON is a small cruising trimaran that is designed to use a TORNADO catamaran rig and hulls for the ‘floats’. If you happened to already own a TORNADO you only needed to buy the main hull. If not, Sailcraft Ltd., also a builder of the TORNADO, would sell you a complete package.
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