Seller's Description
Well maintained, clean and comfortable 2008 Gemini 105MC. Registered in Canada but located in the Caribbean where we have used her as our winter home for the past 14 years. Ample space and amenities make the Gemini 105mc a great live-aboard / coastal cruiser, while the innovative sail plan, hull shape, retractable asymmetric centerboards and retractable outdrive allow for great sailing performance and shallow water anchoring.
The boat is usually hauled for the hurricane season in Antigua, which is an easy island to fly to from North America and Europe and is also a central place for cruising the Leeward or Windward islands.
The Gemini is an affordable boat for the cruising couple looking to get away for the winter. Come join the large cruising community in the Caribbean and take a break from the cold.
Equipment: 265W solar panel 170A lithium house battery, Lead acid starter battery Promarine 2000W pure sine inverter 15kg Rocna anchor Lewmar electric windlass with 150 chain and 150 3-strand nylon rope Katadyn 80e water maker, rated at 3 gal/hr New galley faucet with high pressure salt water sprayer and filtered drinking water tap Aft shower Full cockpit enclosure with zippered screens and custom cockpit cushions Hammock seat and original double helm seat 9 Walker Bay RIB with 5hp Nissan outboard Window A/C unit for when you are on the hard or in a marina Bilge pump in each hull New front windows, new bimini skylight windows New full batten mainsail Raymarine C80 Chart plotter Raymarine ST60 Depth, Speed, Wind Raymarine ST9001 Autopilot Paymarine ST9000 2kw Radar Raymarine 5400 VHF Propane BBQ Spare 25lt fuel and water jugs Underwater lights EPIRB, SOS Dan Buoy, Jack lines Mast climber Shade cloth for cockpit
Specs
- Designer
- Tony Smith
- Builder
- Performance Cruising
- Associations
- ?
- # Built
- ?
- Hull
- Catamaran
- Keel
- Twin Centerboard
- Rudder
- ?
- Construction
- FG
Dimensions
- Length Overall
- 33′ 11″ / 10.4 m
- Waterline Length
- 31′ 9″ / 9.7 m
- Beam
- 14′ 0″ / 4.3 m
- Draft
- 1′ 6″ / 0.5 m — 2′ 0″ / 0.6 m
- Displacement
- 8,000 lb / 3,629 kg
- Ballast
- ?
Rig and Sails
- Type
- Sloop
- Reported Sail Area
- 690′² / 64.1 m²
- Total Sail Area
- ?
Mainsail
- Sail Area
- ?
- P
- ?
- E
- ?
- Air Draft
- ?
Foresail
- Sail Area
- ?
- I
- ?
- J
- ?
- Forestay Length
- ?
Auxilary Power
- Make
- Westerbeke
- Model
- ?
- HP
- 27
- Fuel Type
- Diesel
- Fuel Capacity
- 36 gal / 136 l
- Engine Hours
- ?
Accomodations
- Water Capacity
- 60 gal / 227 l
- Holding Tank Capacity
- ?
- Headroom
- ?
- Cabins
- 3
Calculations
- Hull Speed
-
10.8 kn
Classic: 7.55 kn
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
-
27.6
>20: high performance
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
- ?
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
-
111.5
100-200: light
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
-
11.3
<20: lightweight racing boat
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
-
2.8
>2.0: better suited for coastal cruising
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
Notes
GEMINI 105MC is a development of the 105M with a number of interior updates. Most visibly, however, the cockpit of the 105Mc can be temporarily enclosed with either canvas or solid panels.
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