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 folding onedesign trimaran built in Sweden. Marc Lombard designed the boat, with engineering by Kare Ljung of Windexair. Volvo Race veteran Calle Hennix suggested the concept in 2004, and the prestigious Swedish builder Marström subsequently launched it as a series.

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

With its all-carbon hull and racing pedigree, the Seacart 30 is a high-performance boat. Multihulls World credits it as the only cruising-minded machine capable of delivering a leisure sailor into the high temple of speed.

Design and Construction

The main hull has a full-length chine just above the design waterline. Above it, the topsides flare outward to provide a little seating room below. The sectional shape has no deadrise at all.

The amas are splayed outward at about 4.5 degrees. Folded, the boat is compact enough to tow behind a small car. Its overall beam is 21 feet 10 inches.

The all-carbon hull has a deep, high-aspect-ratio centerboard in the main hull. Draft is 6 feet 7 inches with the board down and just 1 foot 2 inches with it raised. An escape hatch is fitted in the side of the main hull.

Displacement is about 2,050 pounds, while the all-up racing weight is listed as 2,046 pounds. Without crew, the D/L is 35.58.

Rig, Performance, and Handling

The carbon mast is a pivoting wing type. It aligns with the mainsail to create a seamless foil on either tack, and the wing mast alone contributes 53.8 square feet of area. Listed upwind sail area is 667 square feet, and the mainsail has three reefs.

Under a six-horsepower outboard, the Seacart 30 can make 9.5 knots. Its highest recorded speed so far is 27.4 knots, and the builder claims that a souped-up version is available for sailors who want still more speed.

This performance comes with demands on the crew. Multihulls World says the boat demands a progressive apprenticeship and good physical condition. The publication also notes that it can cover Quiberon to La Rochelle—or Antibes to Calvi—in a single afternoon.

Accommodations

The standard interior is deliberately austere, with an all-black, raw carbon-fiber finish. Berth flats are arranged fore and aft, and the layout provides a double berth on an inflatable mattress plus three single berths.

These Spartan accommodations steer the crew toward booking a hotel at stopovers rather than living aboard.

Verdict

The Seacart 30 is a one-design trimaran shaped for racing. It folds for trailering but carries a wing mast and deep centerboard, with a recorded top speed of 27.4 knots. This is a boat for fit, committed sailors rather than a cruising family, and its black carbon cabin is closer to a racing cell than a coastal home.

Pros

  • Folds for towing behind a small car
  • Board-up draft of just 1 foot 2 inches
  • Pivoting carbon wing mast creates a seamless foil on either tack
  • All-carbon hull
  • Recorded top speed of 27.4 knots

Cons

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