Seller's Description
Gemini 105M Catamaran For Sale By Owner Location: Lighthouse Point, FL Asking: $97,500 (USD)
S/V Aireze is a Florida based 1999 Gemini 105M catamaran for sale by owner. The Gemini 105 was designed to be affordable, compact, relatively easy vessels for sailors new to catamarans. It is one of the most popular catamaran designs ever built with over 1,200 hulls constructed. I have owned her since 2016 and maintained her on a regular basis with lots of current updated equipment including new autopilot, electric winch, electric head, 12V refrigeration, standing rigging, and much more in the full equipment list. She has a 2005 Westerbeke engine and new saildrive 2017. Aireze is an awesome boat, easy to sail with lots of room to enterain your friends. Aireze has been in the following boat parades: Boca Raton, Pompano Beach and this year for the first time proud to be in the Winterfest in Ft. Lauderdale. Please click on the link for full information and photos.
Specs
- Designers
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- Builders
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- Associations
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- # Built
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- Hull
- Catamaran
- Keel
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- Rudder
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- Construction
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Dimensions
- Length Overall
- 33′ 11″ / 10.4 m
- Waterline Length
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- Beam
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- Draft
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- Displacement
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- Ballast
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Rig and Sails
- Type
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- Reported Sail Area
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- Total Sail Area
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Mainsail
- Sail Area
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- P
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- E
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- Air Draft
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Foresail
- Sail Area
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- I
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- J
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- Forestay Length
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Auxilary Power
- Make
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- Model
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- HP
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- Fuel Type
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- Fuel Capacity
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- Engine Hours
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Accomodations
- Water Capacity
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- Holding Tank Capacity
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- Headroom
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- Cabins
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Calculations
- Hull Speed
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Hull Speed
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.
Formula
Classic hull speed formula:
Hull Speed = 1.34 x √LWL
A more accurate formula devised by Dave Gerr in The Propeller Handbook replaces the Speed/Length ratio constant of 1.34 with a calculation based on the Displacement/Length ratio.
Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio.311
Hull Speed = Max Speed/Length ratio x √LWL
- Sail Area/Displacement
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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.
Formula
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
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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.
Formula
Ballast / Displacement * 100
- Displacement/Length
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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.
Formula
D/L = (D ÷ 2240) ÷ (0.01 x LWL)³
- D: Displacement of the boat in pounds.
- LWL: Waterline length in feet
- Comfort Ratio
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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.
Formula
Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam1.33)
- D: Displacement of the boat in pounds
- LWL: Waterline length in feet
- LOA: Length overall in feet
- Beam: Width of boat at the widest point in feet
- Capsize Screening
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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.
Formula
CSV = Beam ÷ ³√(D / 64)
- Beam: Width of boat at the widest point in feet
- D: Displacement of the boat in pounds
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