For Sale by

The Catamaran Company

2019 SW 20th Street Suite 300
Fort Lauderdale
United States

Fax:  (954) 727-0024

Contact Seller

Featured Articles

2010 Performance Cruising Gemini Catamaran 105Mc


Edgewater,MD,United States

  • Boat Summary
  • Full Details


First introduced on the original Gemini 105M, the hull shape of the 105Mc is still revolutionary in the multihull industry. The hulls of the Gemini 105Mc are shallow and shaped much like a "teardrop" which requires little force to move the 105Mc through the water yet it also provides a high load carrying capacity (450 lb per hull per 1"). The bridge deck has 39" of clearance at the bow. This, combined with the lack of pitching and wave making, translates to a comfortable ride with no heeling. The shape has been tested and proven in a wide variety of conditions... surfing down 30' waves in the mid-Atlantic, cruising to Hawaii, or cruising down the Intracoastal waterway. The Gemini hulls provide many advantages considering their weight and structural rigidity. The entire hull mold is one complete unit including the centerboard cases. This single unit eliminates any secondary bonding down the keel, at the bridge deck or around the centerboard cases making for a far stronger hull. The result - a faster, stronger, and more stable platform that provides excellent sailing performance.

Throughout the history of the Gemini Catamaran, the centerboards have always been her secret weapon and the reason why she points so well to windward. The lift-able boards provide plenty of 'grip' while going to windward yet are easily retractable. Sailing downwind, the boards are raised thus minimizing drag and maximizing performance. The 105Mc's centerboards combine the pivoting, kick up cruising convenience of centerboards, with the remarkably efficient shape of dagger boards. The centerboards in the Gemini 105Mc have an advanced asymmetric shape that lifts the boat to windward with reduced drag. The boards are now molded with closed cell foam, which ensures they will last a lifetime.The centerboards case has a Plexiglas cover enabling the operator to see whether they are up or down. Centerboards are operated from inside and will easily kick up if the boat is grounded The boards extend 5' 6" in the down position and 18" when up. The 105Mc gets up to speed quickly with her Selden minimal fractional rig with a single adjustable back stays on a 1 ft. crane. This new, efficient full battened, big head mainsail goes behind the backstay improving drive and reducing heel. The advanced design of this Dave Beirig designed sail allows it to easily pass through the backstay. This new rig allows us to offer an optional large, lightweight masthead-furling drifter. It is attached 1 ft above the roller genoa and tacks down to a curved track between the bows. The drifter is ideal hard to windward in light airs or off the wind as an asymmetric spinnaker tacked to windward.The optional 200% roller screacher is mounted on a curved track to enable you to pull it to windward for maximum efficiency. This unique system is a cruisers dream; a spinnaker substitute that can be rolled in and out, as well as a racers option for its ability to be used for upwind work in light airs.The Gemini 105Mc deck is configured for an anchor pass-through the bowsprit. This enables the option of a 200% roller screecher sail. The base of the 420 square foot sail is mounted on a curved track between the bows. This sail is a racer's dream in light air as it can be used on any point of sail. For the cruiser, the sail offers an excellent alternative to a spinnaker as the track enables the foot of the sail to be pulled windward on a reach or broad reach.

Boat Details
Fuel DieselHull Material Fiberglass 
Hull Shape CatamaranBeam 14 ft 
Max Draft 5 ft 5 inDraft Board/Drive Up 1 ft 6 in 
Engine Make WesterbekeEngine Model 30B 
Engine Year 2009Fuel Capacity 36 gal 
Length at Waterline 31 ftLength Overall 34 ft 
Number of Heads 1Holding Tank Size 18 gal 
Water Capacity 60 galEngine Hours 1042 
Number of Berths 3Number of Engines 1 
Max Bridge Clearance 46 ft    

Get a shipping quote
Zip Code:

For Sale by

The Catamaran Company

2019 SW 20th Street Suite 300
Fort Lauderdale
United States

Fax:  (954) 727-0024

Layout & Accommodations

6’0” to 6’5” headroom throughout

Berths for up to 8, all cushions 4” foam with fabric cover

Queen size in master cabin 5’4” x 6’6”


Double bed in each aft cabin 47” wide.

Headlining part fiberglass molding, part foam back fabric

Floor molding with teak and holly laminate flooring inserts

Master cabin with fully lined hanging locker and vanity with six bins for storage


Galley 7’6” x 19” wide, with Formica top, 2 drawers, storage under surface

Propane stove with two burners, oven and broiler. Teak Shelf unit beside fridge.


Square dinette – salon area, with 4” foam cushions, storage under, converts to bed, folding teak table. Hella fan and window blinds in salon.


Head – fully molded, separate shower with adjustable shower head

Towel locker, molded toilet roll holder and mirror in head

Marine head, 18 gallon holding tank, 2 Y-valves, and deck pump out, fresh water flush


Molded main cabin door with window

Sliding bulkhead windows

Two portlights in each aft cabin

4 x Bomar hatches with screens, 1 in head (includes privacy screen), 1 in master and 2 in dinette

Sliding bulkhead windows

Pleated blinds

2 x 12v outlets


Refrigerator – 4 cu ft. runs on propane or 110v

Pressure water system with manual foot pump

Sea water hand pump in galley

Propane detector with 2 sensors, and solenoid/manual shutoff

Dinette - Solid teak folding table with seating for up to 6 adults. Converts to queen-sized berth.

Stove - Leisure Products Twin-burner, Oven, Dedicated Broiler Shelf - Propane

Work Surface - Wilson Art Laminate Counters 17 sq ft. Double-sided work surface

Sink- Stainless Steel Twin Sinks with adjustable faucet

Storage Slider & Bin Storage

Deck & Equipment


Bow seats

Lifeline gates

2 - self-tailing winches

Genoa/Jib tracks

5 mooring cleats, thru-bow-sprit anchor roller

Stainless steel hand rails on cabin top

Uflex twin steering cable steering system

Dinghy davits

Solar panel

Custom helmseat

Cockpit Hammock

Cockpit seat cushions


Hull – deck joint chemically bonded and bolted. PVC gunwale guard

Fiberglass canopy – overhead opening ports, stainless rail support

Lexan gray tinted windows, chemical and scratch resistant

Opening triangle window in pilot house

Buoyancy tanks fore and aft in each hull

Unballasted asymmetrical fiberglass and closed cell foam centerboards

Thru-hull vents for centerboards

Fiberglass molded transom steps

Under hung, adjustable fiberglass and steel kick up rudders

Antifouling bottom paint


Self-draining anchor locker and sail locker on foredeck

2 x cockpit lockers, 2 x aft storage lockers

Port/starboard, stern, steaming, tricolor, anchor and deck lights

2 x 20 lb propane tanks in vented cockpit locker with regulator and gauge

Swim ladder

4 x fenders

4 x mooring lines

22lb Danforth anchor with 6’ chain 100’ rode

Misc spare parts

Electronics & Navigation

VHF Raymarine 55 US channels with DSC

AM/FM Radio/CD Player MP3 with 2 speakers in salon


Raymarine Wind, Tridata and Autohelm Autopilot 4000


Bulkhead mounted compass

Electrical & Power

3 x deep cycle marine batteries

2 x 12 v. breaker panels

1 x 110v Panel

7 x interior lights, cockpit light

3 Hella fans - 2 in dinette, 1 in master cabin

Shore power 30 amp

Hot Water Heater - 6 gal Kuuma #40601 Stainless Steel Shore Power/Engine Heated

Raritan marine toilet RH Sea Water / Fresh Water Flush System

Shower sump pump

2 x 30 gallon fresh water tanks under aft berths

Engine & Mechanical

The standard Gemini 105Mc engine is the Westerbeke 27 horsepower, Model 30B. The 27-hp diesel is linked to a steerable sonic outdrive leg and provides excellent fuel economy and battery charging from the 55-amp alternator. This engine weighs about 400 lbs. The fuel economy will range from 6 to 12 miles to the gallon depending on speed and conditions.


2 x 18 gal fuel tanks, each located either side of the engine under the aft deck.

Sails and Rigging

39’ anodized double spreader mast, slab reefing, 2 winches and backstay tensioner

320 sqft main with cover, 3 full battens, large roach, 2 rows of reefs

150% roller Genoa



Sails Area: Main 340 sq. ft.

Sails Area: Genoa: 350 sq. ft.

Additional Information

New bottom paint June 2011.


The Company offers the details of this vessel in good faith but cannot guarantee or warrant the accuracy of this information nor warrant the condition of the vessel. A buyer should instruct his agents, or his surveyors to investigate such details as the buyer desired validated. Photos may not properly reflect the current condition of the actual vessel offered for sale. In some cases stock photographs may have been used.