S/V Thundercat is a 1980 Catalac 9M catamaran for sale by owner located in the Netherlands. Easy to handle, stable and safe enough for families, this cruising catamaran is fantastic for coastal sailing, and its shallow draft means it can go where most sailboats cannot venture.
The Catalac 9M is not only fun to sail, they are probably the safest cruising catamarans afloat. Catalacs, with over 600 boats built, have never had a catamaran capsize. Designed to sail the North Sea, Catalac catamarans feature extra thick fiberglass hulls that were built to last.
With sleeping accommodation for up to 7 in four separate areas, the boat features an extraordinary amount of living space, a massive cockpit and seemingly endless storage. The galley, with 2m headroom, is well-equipped, light and airy.
Twin fuel-efficient Yanmar 18hp engines make this 9m catamaran easy to manoever when docking — and with a modest 4.2m beam the boat will fit into a monohull moorage.
Sails and rigging are in good shape. New antifouling in the spring of 2022. “Thundercat” is clean, well-maintained, and ready to sail. If you are looking for an exceedingly affordable catamaran with simple systems that is fun to sail, with an exceptional interior layout and a massive cockpit then look no further.
Continue to S/V Thundercat's Catamaran Photos
Specifications | |
Catamaran Name: | S/V Thundercat |
Model: | 9M |
Year Built: | 1980 |
Builder: | Tom Lack Catamarans LTD |
Designer: | John Winterbotham |
Construction: | Solid fiberglass hulls, cored cabin and deck |
Loa: | 29'3" ft (9 meters) |
Lwl: | 25' 4" (7.7 meters) |
Beam: | 13'9"" (4.2 meters) |
Headroom: | 6' 3" in hulls, 6' 3" on bridge deck (1.9 meters) |
Draft: | 2'6" (.75 meters) |
Displacement: | 8,000 lbs dry (3600 Kg) |
Mast Height: | above water: 39' (11.89 meters) |
Water Tanks: | 70 gals (265 litres) |
Cabins: | 4 |
Heads: | 1 |
Galley Location: | Down |
Engines: | 2 x 18 hp Yanmar GM20 with shaft drives |
Sails: | Main and Jib |
Layout Diagram

Catamaran Inventory
Accommodations
- 1 Double Cabin
- 3 Single Berths
- 1 Queen Berth using settee
- 1 Head- Starboard aft
- Galley located in Port Hull
Salon
- Seating for 6, or more.
- (Converts to double bed with table lowered.)
- Oil Lamps
- LED Lighting
Galley
- Smev 3-Burner Stove with Oven
- Spacious Fridge (12v/220v)
- Pots and Pans
- Kettle
- Glasses
- Mugs
- Plates
- Bowls
- Knife Block
- Miscellaneous Utensils and Tableware
- Oven Mitts
Cockpit
- Cushions
- Collapsible Table
- Parasol
- Boat Chair
- Gas Locker
- Folding Bicycle
Electrical
- 2 x 70 Ah Batteries
- Victron Charger
- Shore Power Plug In
- Shore Power Cable
Sails & Rigging
- Mainsail (with Canvas Covers)
- Lazy Jack
- Jib Sail
- Bosun's Chair
Engines & Mechanical
- 2 x Yanmar GM20 (believed to be from 2008)
- Morse Twin Engine Controller
- Stainless Steel Fuel Tanks
- Miscellaneous Spare Parts
- Rudimentary Tools
Navigation Equipment
- Autohelm Wind,
- Autohelm Depth
- Autohelm VMG
- Autohelm Multi (on Chart Table)
- Clipper Log (GPS is more reliable)
- Garmin GPS 152
- ICOM VHF Marine Radio Telephone
- Automatic Pilot (Autohelm 3000)
Safety
- Navigation Lights
- 3 Lifejackets
- Coast Guard Redlijn
- Trump Portable Horn
- Flares
Anchor & Docking
- Two Anchors
- 3 Fenders
- 1 Ball Fender
- Miscellaneous Ropes
Miscellaneous
- Stainless Steel Watertanks
- Swim Ladder
- Flag Pole and Dutch Flag