Catamaran For Sale -- Gemini 105 MC (USA)

Gemini 105 MC Photos Contact Catamaran Owner
Asking: $99,500 (USD) Location: Bremen, Maine (USA)
SV Sea Turtle is a Bremen, Maine based 2004 Gemini 34 105MC Catamaran For Sale By Owner
This Boat Owner requires financial settlement only ... trades will not be considered!

S/V Sea Turtle is a 2004 Gemini 105Mc catamaran for sale by owner. She has been owned by only 2 owners and is a well-maintained northern boat with NO LEAKS. She was kept on the lake in Detroit from 2004-2010. We had her trucked by C&J Transport (experienced Gemini movers) to Portsmouth, NH and then sailed her home to Maine. We have sailed her summers only except for one trip to Florida and back.

We care for our boat deeply and the only reason we are selling her is to move to a slightly larger catamaran. We have delayed this move because there are so many features which the Gemini has that even larger cats do not offer: queen berth with a view of the stars, 18” draft (with boards, rudders, and drive leg up), the ability to point to 40 degrees when the boards are down, retractable drive leg and rudders (no worries about catching pots), large comfortable settee, hammock seat on the stern, gas refrigerator, awesome dinghy davit system, and, because she is 14’ wide, the ability fit in a regular slip and be hauled at the lower-cost yards. We have made improvements every year (just replaced the engine) and can share our maintenance log.

Bridgedeck: standing headroom is in U-shape seating for six to eight at the table, which can convert to a double bunk when necessary. With chart area and storage to port. Her master cabin is forward in the Starboard hull: standing headroom; double berth aft; navigation station port midship; head forward. Starboard hull: standing headroom; double berth aft; galley midship; access to master stateroom forward.

The Galley workspace is astounding. The countertop is 7’6″ long x 19″ wide with a 5 foot counter on opposite side, 3 drawers, and storage under surface. Double stainless steel sink with pressure hot and cold water. Propane stove with two burners, oven and broiler. Dometic front opening 3.8 cubic foot electric refrigerator w/ freezer. Galley fully equipped with dishes, utensils and cooking equipment and the cockpit includes a Barbeque.

Location: Maine offers some of the best cruising in North America and we can recommend boatyards. However, we are also available to help sail her south and/or we can recommend a reputable trucking company.

About the Gemini 105Mc: The Gemini 105Mc offers excellent value, outstanding accommodations, and solid sailing performance. It is designed for a broad range of use: owners who want a boat for weekend or a family going on the dream of a life time. For either, the Gemini is a successful design with three decades of experience in its pedigree and an active owner’s group.

Catamaran Name: SV Sea Turtle
Model: 34 105MC
Builder: Performance Cruising Inc.
Designer: Tony Smith
Loa: 33' 6" ( 10.21 m)
Lwl: 31' 9" ( 9.75 m)
Beam: 14' 0" ( 4.27 m)
Headroom: 6 ft 1 in
Draft: Max Draft: 5' 6" ( 1.52 m) / Min Draft: 1' 6" ( .46 m)
Displacement: 8600 lbs
Mast Height: 48' 0" ( 14.63 m)
Speed: Cruising Speed: 6.5 Knts Max Speed: 7.5 Knts
Fuel Tanks: 36 Gallons ( 136 l)
Water Tanks: 60 Gallons ( 227 l)
Cabins: 3 - 1 Queen / 2 full
Heads: 1 AirHead composting toilet installed in 2018
Galley Location: down
Engines: NEW remanufactured 27 hp Westerbeke 30B3 (2020) coupled to Sonic Catamaran drive Mk2
Sails: Mainsail full batten with 2 rows of reefing points
Genoa jib with Furlex roller furling, jib extender
Tides Marine Strong Track System with slides
Sail cover and storage bags

Catamaran Inventory


  • 1 queen in master cabin with 2” memory foam topper and moisture barrier under mattress,
  • Mounted TV/DVD player,
  • Solar fan in hatch and 12V fan
  • Brass reading light on teak block,
  • 2 double cabins in rear port and starboard hulls.
  • Each mattress has a moisture barrier underneath and a waterproof mattress cover.
  • Overhead we have mounted teak pieces for extra storage, added shelving to the lockers, and brass hooks on the doors.
  • Settee in saloon converts a queen-size berth.

Salon & Galley

  • Mermaid 16,500 BTU A/C (barely used)
  • Bus heater (port hull)
  • Cushion covers are sunbrella fabric and NEW. Area rugs are new.
  • Oven/stove: 2-burner Voyager 2000 with broiler
  • Refrigerator/freezer: Dometic RM2452 Propane/120v
  • Double stainless steel sink with dishtub that fits sink
  • Whale tip toe pump
  • Built-in Origo 750 watt microwave & paper towel holder
  • There are 2 12V fans and LED lighting in galley
  • 8” brass ship’s clock (see picture)
  • Interior wood is teak, oiled every year at least once


  • Snap-on cockpit cushions
  • NEW redesigned cockpit enclosure in gray sunbrella
  • Full cockpit screen enclosure
  • NEW Lexan windows on coach roof
  • Custom built-in fiberglass binocular box (see picture)
  • Kato dinghy davit system with added stabilizing arm (solar panels sit on top)
  • Rear hammock with snap-on padded cushion (2014)
  • 2 propane tanks (in starboard locker) with holding straps.
  • Outdoor hot/cold shower hose & folding swim ladder on starboard steps
  • Magma propane BBQ grill with NEW sunbrella cover (port railing)
  • 5 aft cleats


  • AirHead composting toilet installed in 2018.
  • Deck-mounted solar vent (NEW: replaced in 2020)
  • Enclosed shower & hot/cold shower and sink
  • Wooden towel tack
  • Mirror and storage

Centerboards, Hull & Bottom

  • NEW Teleflex steering cables
  • Bottom stripped and barrier coat applied (2017)
  • Ablative bottom paint applied every year
  • NEW this year: Sea Hawk Biocop TF antifouling paint
  • NEW centerboard control lines (2019)

Anchor & Deck

  • 35 lb. anchor with 35’ of 1/4” (7mm) high-test chain & 100’ braided 5/8” rope
  • Quick Genius 600 electric anchor windlass with handheld control
  • Anchor bridle
  • 4 Fenders & 6 docklines
  • Snap-on sun covers for 2 large Lexan windows
  • 2 flag halyards


  • 2 30-gallon water tanks
  • NEW water tank Y-valve
  • 6-gallon marine water heater (120v or engine-heated)
  • Outdoor hot/cold hose on starboard stern
  • Pressure water pump system
  • Bilge pump and/or shower drain pump
  • Salt water washdown pump and hose in foredeck anchor locker

Electronics & Navigation

  • Raymarine C80 chartplotter/GPS
  • Raymarine Pathfinder Radar
  • Raymarine Auto Pilot ST4000
  • Raymarine ST60 Tri-data: depth, speed, water temperature, wind
  • Raymarine Smart Controller S100 Auto Pilot Remote
  • Raymarine Ray54 VHF Marine Radio
  • Ritchie Compass
  • West Marine stereo with Bluetooth capability, auxiliary input, CD player


  • 2 150-watt solar panels with controller (mounted on dinghy davits on stern)
  • 2 4D AGM house batteries, lightly used
  • 1 Lifeline AGM start battery (850 CCA)
  • ProSine2.0 2000 watt inverter/charger
  • Xantrex battery monitor
  • 3 12v outlets and 6 120v outlets
  • 5 hard-wired Hella Marine 2-speed turbo fans
  • 50 ft. shore power cord with adapters

Sails & Rigging

  • Sails are original but regularly cleaned
  • Battened mainsail with 2 reefing points, NEW halyard, sheet, back stay & reefing lines
  • Genoa jib with Furlex roller furling,
  • Whisker pole (deck-mounted)
  • Tides Marine Strong Track system with slides
  • 2 #40 Lewmar winches
  • 2 Plastimo tubular radar reflectors (2017)
  • Sail cover and storage bags

Engines & Sillette drive leg

  • NEW remanufactured 27 hp Westerbeke 30B3 (2020)
  • NEW rebuilt marine gear (2020)
  • NEW updated Sonic flex-coupling (2020)
  • 2 18-gallon fuel tanks with new stainless filler caps (see picture)
  • Racor fuel filter / water separator
  • Sonic Catamaran drive Mk2
  • NEW bellows and cover, latch spring & oil drain plug
  • NEW hydraulic hose for Sillette lift
  • NEW steering control lines
  • Heavy plastic custom-built propeller shield (see picture)


  • Xantrex Propane Leak Detection System
  • 2 fire extinguishers (1 in salon, 1 in cockpit locker)
  • Safety flares
  • Lifelines