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2010 Gemini 105Mc



Ready for an affordable catamaran? Here is one for you! Located in St Croix, USVI complete with a transferable slip. 3 cabins and a convertible dinette sleeps up to 8 people.



A large Queen sized berth is located just starboard of the center line forward. This is a completely private cabin with excellent cabinetry and stowage. Two twin cabins are located aft for guests. The salon settee provides great entertaining and seating space for 6 with Cabin Fans, Cabin & Reading Lights, Built in Cabinetry & Drawers 

  • 6'0" to 6'5" headroom throughout
  • Master cabin with full hanging locker and vanity with 6 bins, queen size bed 6'6" X 5'4"
  • Double bed in each aft cabin 47" wide 
  • Salon area with 4" foam cushions covered with blue fabric
  • Folding teak table makes to queen size bed.
  • Cabin fans in each cabin and 2 in the saloon


The engine is a Westerbeke 27 horsepower, Model 30B. The 27-hp diesel is linked to a Sillette Sonic outdrive leg and provides excellent fuel economy and battery charging from the 55-amp alternator. 409 hours on the engine.


  • 12” Garmin 5212 with added integral radar and AIS. 
  • Raymarine VHF radio


The galley is outfitted with all of the amenities seasoned cruisers want. There's a double-sided galley that includes a 4-cu. ft. front loading reefer and a Voyager 2500 LP stove and oven.  There's also plenty of smartly designed storage in each area of the boat that makes for an uncluttered cabin. A convertible dining table that easily seats  6 or 8 is handy and is two steps down to the hulls that keeps everyone at the same level. 6' average headroom throughout. 

Additional Information

  • Screecher,
  • Cockpit hammock, (best seat onboard!)
  • Solar panel (130 watts)
  • Full cockpit enclosure.
  • Air conditioner,
  • Lemar Profish 700 electric windlass and 33lb Rocna anchor
  • Raymarine autopilot
  • Dometic fridge (new)
  • Commercial Chef microwave (2023)
  • Recent sails (main sail, 2022, Jib 2016)
  • Lifeline batteries (2019)
  • Dinghy davits (no dinghy/tender)
  • Engine has 409 hours


Available for viewing in St Croix, USVI at the desirable Green Cay marina with a transferable slip!


The Gemini 105Mc is the third version of a proven design from Tony Smith that began production in Annapolis in the 1990s. It's a spacious, stable platform for a fast-cruising couple. First build of the 105Mc was 2003 and the last build was 2011. Many improvements were made along the way.

  • A quote from Sail Magazine: "The bottom line is: What do you want your cruising boat to do for you? If you're looking for a thin-water-friendly, level-sailing cruiser with loads of deck space, comfortable cabins, copious stowage, and a salon with 360-degree visibility that connects directly to the cockpit, this cruising catamaran is for you."

Basic Boat Info

Make: Gemini
Model: 105Mc
Year: 2010
Condition: Used
Category: Sail
Construction: Fiberglass
Boat Hull ID: PC101092G010
Has Hull ID: Yes


Length: 34 ft
Length Overall: 34 ft
Waterline Length: 31 ft
Beam: 14 ft
Max Draft: 5'6 ft
Min Draft: 1'6 ft
Bridge Clearance: 46 ft
Cabin Headroom: 6'5 ft
Dry Weight: 9600 lb
Cabins Count: 3

Engines / Speed

Engines: 1
  • Make: Westerbeke
  • Model: 30B
  • Fuel: Diesel
  • Engine Power: 27hp
  • Type: Inboard
  • Propeller Type: 3 Blade
  • Engine Location: Center
  • Drive Type: Stern
  • Engine Hours: 409
Cruising Speed: 6.5 kn
Propeller RPM: 2500
Maximum Speed: 8 kn


Fuel Tank Capacity: 36 gal
Fuel Tank Material: Plastic
Water Tank Capacity: 60 gal
Holding Tank Capacity: 18 gal


Heads Count: 1
Drive Type: Stern
Boat Class: Catamaran, Multi-Hulls


Christian Herold
The Listing Broker for this vessel is Christian Herold, CPYB. Local USVI Broker and he can be reached directly at 508-887-6580 or email for any additional information or to make an offer.
Sea Lake Yachts LLC


Sea Lake Yachts LLC
Watergate Yachting Center - Pier 3
Kemah, TX, US, 77565

  • Berths for up to 6
  • Dinette converts to double berth
  • Queen size bed in master cabin -  5’4” x 6’6” - Stbd fwd
  • Master has full hanging locker and vanity with six bins
  • Double bed in each aft cabin - 6'6" X 48"
  • Floor molding with solid grooved Cherry finish
  • Folding teak dinette table 
  • Manual Head with overboard and holding tank discharge
  • Towel locker, sink,  and mirror in head
  • Two 30 gallon fresh water tanks under aft berths
  • 5 12v fans mounter throughout the boat
  • 110v GFI outlets
  • Mermaid 16000 BTU air conditioning 
  • Four large Bomar tinted opening hatches w/screens
  • Solid surface counters, 2 drawers, storage under surfaces
  • Solid table with seating for up to 6 adults. Converts to queen sized berth in Salon
  • Voyager 2500 propane oven with two burner stove top
  • Dometic front opening 3.8 cubic foot switchable electric/propane refrigerator with separate freezer
  • Twin stainless steel sinks
  • Slider & bin storage
  • Wine glass storage
  • Spice rack & paper towel holder
Engine, Electrical and Plumbing
  • 27 HP Westerbeke 30-A inboard diesel engine with fresh water cooling and fresh water flush 
  • 409 Hours eng hours
  • 36 fuel capacity - approx. fuel burn is .5 to .7 gallons per hour 
  • Groco ARG-1000-P seawater strainer
  • Steerable and lifting outboard drive and propeller leg
  • battery charger
  • Pressure water system with manual foot pump
  • Shower sump pump
  • 6 Gal Kuuma water heater
  • Two SeaSense 800 gpm bilge pumps
  • Hot and cold freshwater transom shower
  • Saltwater deck wash down pump
We try but:

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 desires validated. This vessel is offered subject to prior sale, price change, or withdrawal without notice.

Additional Contact Information
Contact Christian, CPYB @ 508-887-6580 or today.