Nacra F18

Successor of the Inter 18, the Nacra F18 is designed for the same Formula 18 class. She is at her maximum on the sheltered waters; even though the boat has a high freeboard to raise the platform and facilitate the crossing waves, she is quite difficult to carry out in seas. Nacra F18 inherits high ratio appendages of her predecessor, giving thus a good upwind performance. However, her small rudders penalize the boat for the start phases (new rudders in 2004). The Nacra F18 is considerably well equipped and fitted (self-tacking jib series ...).

See the Nacra F18's specifications on

Main Features

ModelNacra F18
Sailboat typeBeach catamaran
ClassFormula 18
DesignerAlain Comyn
Building years (first/last)2002 / 2006
PredecessorNacra Inter 18
SuccessorNacra F18 Infusion
CE regulationC-2 / D-4
ConstructionSandwich foam/fiberglass/vinylester
Appendage typeDaggerboards
Rudder bladeDouble transom hung rudders
RudderSingle tiller
Main dimensions
Hull length18.1 ft
Waterline length18.0 ft
Beam over all8.5 ft
Mast length29.8 ft
Light displacement397 lbs

Rig and sails

Rig typeFractional Sloop with rotating mast
MastFore beam stepped mast
Rig materialMast and boom in Aluminum
Standing rigging material1x19 strand wire
Number of rows of spreader1
Spreader anglePushing (diamond)
Spinnaker typeAssymmetrical spinnaker on bowsprit
Upwind sailarea228 ft²
Downwind sailarea409 ft²
Mainsail area183 ft²
Jib area45 ft²
Spinnaker area226 ft²

PMainsail hoist measurement (from tack to head)

28.0 ft

IFore triangle height (from mast foot to fore stay attachement)

18.8 ft


Upwind sailarea / displacement1264.8 ft²/Ton
Downwind sailarea / displacement2272.4 ft²/Ton
Trapezes2 set(s)

SCHRSSmall Catamaran Handicap Rating System: rating introduced by ISAF in 1992 to allow to different catamarans to race together.

rating (2013)

Portsmouth-YardstickPortsmouth Yardstick is an empirical system of handicapping used for small sailboat (dinghies included).


Auxiliary engine

BrandNo engine

Based on specification2003

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