What the fleet has seen
The Gemini 105MC, as the fleet has seen it
Derived from the videos the fleet has analysed of this model. ▶ marks open the moment aboard.
Gemini 105MC
Catamaran, twin centreboards · Masthead Sloop · 2003–2011
A versatile cruising catamaran featuring a cockpit that converts with canvas or solid panels for all-weather comfort
Designed by Tony Smith, built by Performance Cruising Inc.
- LOA
- Beam
- Draft (max)
- Displacement
- Hull type
- Catamaran Twin Cbrd.
See her sail
The Gemini 105MC, on the water
The fleet's own footage — the truest look at how she really moves.
Footage from Lady K Sailing
Is it for you?
Character
Where this design lands on the numbers a shopper trusts — read straight from her own ratios.
Shoal draftDraws 0.46 m, board up where she has one — creeks, sandbars and thin anchorages most keels have to stay out of.
LightHeavy
112 — light for her waterline, so she is easily driven and quick to accelerate.
Displacement / length 112
EasygoingPowered-up
27.7 — a lot of sail for her weight; powered-up and eager, a real performer.
Sail area / displacement 27.7
- Draws more than ~80% of boats her size on file
- Narrower than ~93% of boats her size on file
Compared with 168 boats of the same type within a quarter of her length.
The living fleet
Sailed by the fleet
Where the fleet has filmed this boat.
Seen 2 times across one channel of the fleet.
On the water
The Gemini 105MC on video
The record
Full specifications
The complete reference set — tap any figure to switch between metric and imperial.
Dimensions
Weights
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
27.7
Displacement / length
111.6
Hull
Hull type
Catamaran Twin Cbrd.
Construction
Fiberglass
Production
Years built
2003–2011
Designer
Tony Smith
Builder
Performance Cruising Inc
Boats like this, on the water
More boats like her, on the water
Comparable boats the fleet has on camera: same type, within a quarter of her length. Open the boat, or watch the video — a timestamp means she only appears in passing.
Gemini 105M10.21 mSame hull familyNear-identical lengthA Tony Smith-designed catamaran with twin centerboards, offering a high sail-area-to-displacement ratio for agile cruising
Dragonfly 3510.68 mSame hull family0.5 m longerA high-performance trimaran with a rotating fractional rig and a 34.54 SA/D ratio built for rapid, stable cruising
C-Cat 3711.10 mSame hull family0.9 m longerA Marc Lombard-designed catamaran featuring a fixed twin-keel hull and a high 27.25 sail area-to-displacement ratio
Fastback 309.30 mSame hull family0.9 m shorterA John Gross-designed masthead sloop catamaran with a high sail area-to-displacement ratio for spirited performance
The family
Related models
The designs closest to hers — usually the rest of the builder's range, sometimes the same hull sold under another name.
Gemini 105MA Tony Smith-designed catamaran with twin centerboards, offering a high sail-area-to-displacement ratio for agile cruisingGemini 3400The first in the series to feature molded transom steps and a new kick-up rudder system for easier handlingGemini 3200An evolution of the 3000 series featuring an extended waterline for improved performance and a masthead rigGemini 31/3000The best-selling American cruising catamaran of its era, featuring a twin-centerboard hull designed for shoal-water accessGemini Legacy 35A high-performance fractional catamaran featuring a Warren Luhrs-designed cockpit and shallow 0.86m draft
Keep asking
The fleet has more to say
Search what's been said about the Gemini 105MC, or ask a specific question — the answer comes back written out, with links to the moments it draws on.
The newsletter
New boats, new stories, from everywhere.
One email from the fleet — boats newly added, videos newly analyzed. No noise.