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Seller's Description

Experience sailing at its finest aboard a beautifully maintained 2006 Gemini 105MC Sailing Catamaran. Renowned for their exceptional combination of performance, comfort, stability, and reliability, Gemini Catamarans offer an unparalleled sailing experience, making them a favorite among sailors worldwide. Perfectly sized at 33’6” in length with a 14’ beam, it fits comfortably into a standard-sized dock slip, a convenience often unavailable to larger catamarans.

Located in the idyllic waters around Marco Island, Florida, She has delighted her current owners with many memorable day cruises, complemented by extended adventures to vibrant destinations such as Key West and Naples. Her thoughtful design ensures easy handling, while retractable dagger boards and kick-up rudders allow exploration of shallow waters less than two feet deep, greatly expanding cruising possibilities.

Her spacious cockpit, complete with comfortable wheel steering, is ideal for leisurely afternoon picnics or sunset gatherings. Ascend the aft steps to find ample seating and a welcoming layout perfect for relaxation or entertaining. Moving forward, the sturdy foredeck provides security with stainless steel pulpits and lifelines that border the bow and narrower side decks.

Despite her generous accommodations, her lightweight construction–only around 8,000 pounds displacement–allows for efficient and swift sailing. The manageable weight also simplifies anchoring, requiring lighter ground tackle than heavier vessels. Notably, the Gemini is designed to sail comfortably and safely, with heeling angles above seven degrees indicating when to easily reef the sails.

The interior is seamlessly accessible from the cockpit, impresses with its smart layout and cozy comforts. The salon features a large table comfortably seating four guests, expanding to accommodate eight for sociable dining or game nights. Descend just a few steps from the salon to find the thoughtfully arranged galley with ample dry goods storage. The original propane-driven refrigerator, operating quietly on ammonia-cycle technology rather than a compressor, has been removed, but space remains to replace it.

She boasts inviting sleeping quarters, including two cozy aft berths located in each hull. The spacious master cabin, positioned forward in the starboard hull, features a queen-sized bed perfect for restful nights after a day on the water. Adjacent to the salon and forward to port lies a convenient head with a shower, serviced by a propane-powered instant hot water heater, ensuring comfort even on longer journeys with its dual 35-gallon fresh water tanks.

One of the most advantageous features is her adjustable cable-driven, hand-cranked centerboards, neatly stowed within hull trunks. These versatile boards provide customizable draft management from minimal depth for shallow cruising to three feet down for optimal sailing performance, particularly upwind. With the rudders similarly adaptable, the Gemini 105MC’s versatility is unmatched in varying sailing conditions.

Powering her when wind conditions require assistance is a reliable 27 HP Westerbeke diesel engine coupled to a Sillette tilting saildrive. With regular and attentive maintenance, this efficient propulsion system ensures dependable operation, enhancing your cruising enjoyment and peace of mind.

Whether you’re exploring tranquil coastal waters, embarking on adventurous excursions, or simply enjoying leisurely days at anchor, Dragonfly represents an extraordinary opportunity to own a well-crafted sailing catamaran that’s easy to handle, spacious, and ready to deliver endless sailing pleasure.

Specs

Designer
Tony Smith
Builder
Performance Cruising
Associations
?
# Built
?
Hull
Catamaran
Keel
Twin Centerboard
Rudder
?
Construction
FG

Dimensions

Length Overall
33 5 / 10.2 m
Waterline Length
31 9 / 9.7 m
Beam
14 0 / 4.3 m
Draft
1 6 / 0.5 m 5 6 / 1.7 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
?

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

10.75 knots
Classic formula: 7.55 knots
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.
27.6
<16: under powered
16-20: good performance
>20: high performance
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

?
<40: less stiff, less powerful
>40: stiffer, more powerful
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
111.5
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
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
11.3
<20: lightweight racing boat
20-30: coastal cruiser
30-40: moderate bluewater cruising boat
40-50: heavy bluewater boat
>50: extremely heavy bluewater boat
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
2.8
<2: better suited for ocean passages
>2: better suited for coastal cruising

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.

This listing is presented by PopYachts.com. Visit their website for more information or to contact the seller.

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