Seacart 30 Sailboat Review, Specs, and Listings

Marc Lombard·2003·OceanLake Marine
Seacart 30 drawingBuilder drawing
Hull Type
Trimaran · daggerboard
Rig
Fractional Sloop
LOA
30.02' · 9.15 m
Disp.
2,050 lbs · 930 kg
First year
2003

The Seacart 30 is a onedesign trimaran conceived as a folding rocketship built in Sweden, with design work by Marc Lombard and engineering by Kare Ljung of Windexair. Launched as a series by the prestigious Swedish builder Marström after the concept was suggested in 2004 by Calle Hennix, a Volvo Race veteran, the boat pairs an allcarbon hull with a racing pedigree that Multihulls World credits as the only cruisingminded machine to deliver a leisure sailor into the high temple of speed.

Measurements

Dimensions 01

Length Overall
30.02 ft
Length on deck
Waterline Length
29.53 ft
Beam
21.88 ft
Draft
10.5 ft
Maximum Headroom
Air Draft

Construction & hull 02

Construction
Fiberglass
Hull Type
Trimaran
Keel Type
Daggerboard
Ballast
Displacement
2,050 lbs
Water Capacity
Fuel Capacity

Rig & sails 03

Rigging Type
Fractional Sloop
Mainsail luff
Mainsail foot
Foretriangle height
Foretriangle base
Forestay Length (estimated)
Sail Area
667 sqft

Calculations 04

Sail Area to Displacement Ratio
66.12
Ballast to Displacement Ratio
Displacement to Length Ratio
35.54
Comfort Ratio
1.75
Capsize Screening Ratio
6.89
Hull Speed
7.28 kn

Design and Construction

The Seacart 30 is a trimaran with a main hull that carries a full-length chine just above the design waterline, where the topsides flare out to give a little seating room below, and the sectional shape shows no deadrise at all. The amas are splayed out at about 4.5 degrees, and the boat folds so compactly that you can tow it behind a small car. The all-carbon hull is paired with a deep, high aspect ratio centerboard in the main hull drawing 6 feet 7 inches when down, with board-up draft of just 1 foot 2 inches. An escape hatch sits in the side of the main hull. With a displacement of about 2,050 pounds and an all-up racing weight of 2,046 pounds, the D/L without crew is 35.58, and the beam stretches to 21 feet 10 inches.

Rig and Handling

The carbon mast is a pivoting wing type that aligns with the mainsail to form a seamless foil on either tack, and the wing mast alone accounts for 53.8 square feet of area. Upwind listed sail area is 667 square feet, and the mainsail carries three reefs. Under a six-horsepower outboard the boat can make 9.5 knots, while the top speed recorded so far is 27.4 knots. The builder claims a souped-up version exists for those needing more speed. Multihulls World notes the boat demands a progressive apprenticeship and good physical condition, and that it can run from Quiberon to La Rochelle or Antibes to Calvi in a single afternoon.

Accommodations

The standard boat comes with an all black, raw carbon fiber interior finish, deliberately austere. Berth flats sit fore and aft, and the layout includes a double berth on an inflatable mattress plus three additional single berths. The Spartan character of the accommodation steers the crew toward a hotel booking at stopovers rather than liveaboard comfort.

The Verdict

The Seacart 30 is a razor's-edge one-design trimaran that folds for trailering yet carries a wing mast and deep centerboard for genuine 27-knot potential. It is a boat for the fit and committed, not the cruising family, and its black carbon cabin is a racing cell rather than a coastal home.

Pros

  • Folds and tows behind a small car with board-up draft of 1 foot 2 inches
  • Pivoting wing carbon mast forms a seamless foil on either tack
  • All-carbon hull with 27.4-knot recorded top speed

Cons

  • Spartan accommodation oriented toward shore hotels, not living aboard
  • Demands progressive apprenticeship and good physical condition
  • Costs as much as a second-hand 40 to 45-foot cruising catamaran per Multihulls World

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