Marström Composite AB
Seacart 30

The Seacart 30 uses the concept of Formula 28 and Formula 40: extremely high performance multihulls while remaining financially accessible, with a novelty all Seacart 30 run in strict one-design. 2 words led the design of this trimaran: simplicity and quality.

Built by Marström Composite AB, manufacturing is of the highest quality: prepreg sandwich carbon / Nomex autoclaved at 128 ° C under 3-8 bars, ensuring exemplary platform stiffness. All appendages and spars use carbon fibbers. However, the Seacart 30 is relatively simple: self-tacking jib, mainsail on a circular rail, a single dagger board in the central hull and one rudder on each float to keep control in any situation.

Oceanlake Marine also offers a version called FCR standing for "Folding Club Racer". The hull forms are identical to the Seacart 30 GP but this trimaran is quietened down with a shorter mast and less expensive materials (fibberglass/ epoxy with carbon reinforcements). This new version has the advantage, as its name suggests, to be foldable and to have more comfortable accommodations.

See the Seacart 30's specifications on

Main Features

ShipyardMarström Composite AB
Oceanlake Marine
ModelSeacart 30
Sailboat typeOne-design
Cruising-racing multihull
Trailerable trimaran
DesignerMarc Lombard
Building years (first/last)2005 / Still in production
CE regulationB-X / C-X
ConstructionSandwich Nomex/carbon fiber/epoxy
Appendage typeDaggerboard (main hull)
Rudder bladeTwo on amas
RudderDouble tillers
Main dimensions
Length over all36.6 ft
Hull length30.0 ft
Beam over all21.7 ft
Length folded30.0 ft
Beam folded8.4 ft
Draft (max./min.)6.6 / 1.2 ft
Mast height55.8 ft
Mast length49.9 ft
Light displacement2094 lbs

Rig and sails

Rig typeFractional Sloop
Rig materialMast and boom in Carbon fiber
Number of rows of spreader1
Spreader anglePushing (diamond)
Spinnaker typeCode 0
Upwind sailarea643 ft²
Downwind sailarea1267 ft²
Mainsail area438 ft²
Genoa area205 ft²
Working jib area161 ft²
Jib area78 ft²
Spinnaker area829 ft²

PMainsail hoist measurement (from tack to head)

47.2 ft

EMainsail foot measurement (from tack to clew)

13.1 ft

LLGenoa hoist measurement (from tack to head)

37.7 ft

LPGenoa perpendicular measurement from clew to luff.

10.8 ft


Upwind sailarea / displacement676.4 ft²/Ton
Downwind sailarea / displacement1333.5 ft²/Ton

Auxiliary engine

Engine power1 x 6 hp
Fuel typeGas
Transmission typeOutboard


Number of cabin1
Number of berth4

Based on specification2015

Website :

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