F-9A, F-9AX and F-9R Trimarans - multihulls by Ian Farrier

Farrier multihull designs range from trailerable trimarans to ocean going trimarans.

The F-9A, F-9AX and F-9R trailable trimarans are true long term performance cruiser multihulls and their trailerability gives great versatility.

Aft Cabin Version

The aft cabin version has ample room for 4 or 5 adults, with standing headroom in the galley area. Galley is large and can be customized to individual taste. A chart table can be located on the starboard side (with a fold down flap).

Cabin settees are 6' 3" (1.9m) long and these are also used for berths, with storage areas underneath. A cabin table will easily seat four, and can fold down or away when not in use.

The aft cabin has a double berth with full sitting headroom. Access is through a hatch in the aft cabin front, or through under the cockpit.

The forward cabin has a separate toilet area on the port side which can be curtained off, a vanity unit is to starboard. and a cozy (snug) double berth, or large single is in the bow.

Aft Cockpit Version

The aft cockpit version has a longer main cabin, for more interior space, while the larger cockpit extends to the transom. Major advantage is a separate 'walk in' head and shower area besides the daggerboard case, and a very large double berth in the bow.

The fractional rig is very efficient and easy to handle in all conditions. Farrier designs do not need an oversize rig to perform well, and this coupled with the F-9A's enormous 47,000 foot-lbs righting moment results in a very safe cruising boat. Boom is roller furling.

A daggerboard is used for simplicity, its case helping to support the mast. A kick-up spade rudder is housed in its own retractable rudder box in the transom.

An outboard of 8 to 15 HP is recommended on the stern with remote controls being located in the cockpit if needed.

Other options included in plans are a higher cabin roof, for more standing headroom, and the new F-9R racing version, with a taller rotating wing mast.

F-9A™ Specifications

L.O.A. 30' 10" (9.4m) L.W.L. 30' (9.15m) B.O.A. 22' 5" (6.84m)                    Folded Beam 8' 2 1/2" (2.5m) Draft 1' 4" (0.41m) D/board down 5' 6" (1.67m) Empty weight 3000-4000lbs (1350-1636kg) (depending on materials and methods)   Mast Height Std. 40' (12.2m) Mast Height Racing 42' 6" (12.96m) Sail Area (Main & jib) 599sq.ft. (55.4sq.m.) Sail Area (Racing) 627sq.ft. (58sq.m.) Height on Trailer 11' 6" (3.5m)

F-9AX™ Version

Same as the F-9A but with a 15% wider center hull for considerably more interior room, a 16% higher load capacity, and 8" (200mm) wider overall beam (23' 1" or 7.04m).

The trailering width is increased to 9' 6" (2.9m) but this can be easily trailered in most states, and many countries without major difficulty. Usually with just a written permit. Has the same options as the F-9A.