The A31 is proposed by Archambault following the A40 and the A35. She is an IRC orientated cruising-racing sailboat. She made a mark with this measurement rules winning the Spi Ouest France and the Semaine Nautique Internationale de Marseille the year of her launch. The deck layout is as adapted to the regatta with full crew as to the shorthanded cruising.

The accommodations are simple, large and well made but seem more designed to accommodate the crew after the race than really cruise as evidenced by the lack of rail on the table or the small storage capacity. Another race heritage the doors are made of fabric, even for the bathroom

See the A31's specifications on

Main Features

Sailboat typeCruising-racing monohull
DesignerMichel Joubert
Bernard Nivelt
Building years (first/last)2009 / Still in production
CE regulationA-6 / B-6 / C-8
ConstructionFiberglass/polyester, monolithic hull (composite infusion), PVC sandwich deck (composite injection)
Appendage typeTrapezoidal keel
Ballast typeLead
Rudder bladeSingle under hull rudder
RudderSingle tiller
Main dimensions
Length over all31.3 ft
Hull length31.3 ft
Beam over all10.6 ft
Draft6.2 ft
Light displacement6945 lbs
Ballast2976 lbs

Rig and sails

Rig typeFractional Sloop (9/10)
Rig materialMast and boom in Aluminum
Number of rows of spreader2
Spreader anglePushing
Upwind sailarea554 ft²
Downwind sailarea1082 ft²
Mainsail area307 ft²
Genoa area248 ft²
Spinnaker area775 ft²

PMainsail hoist measurement (from tack to head)

39.6 ft

EMainsail foot measurement (from tack to clew)

13.3 ft

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

39.7 ft

JFore triangle base (from mast foot to bottom of forestay)

12.0 ft

LLGenoa hoist measurement (from tack to head)

38.9 ft

LPGenoa perpendicular measurement from clew to luff.

12.6 ft

SPLSpinnaker pole lenght

12.7 ft

SLSymmetrical spinnaker hoist measurement (from tack to head)

42.3 ft

SMWSymmetrical spinnaker width

22.0 ft


Ballast ratio42.9 %
Upwind sailarea / displacement176.0 ft²/Ton
Downwind sailarea / displacement343.4 ft²/Ton
HN (French rating)26.0

Auxiliary engine

Type1 x 2.14 S10
Engine power1 x 14 hp
Fuel capacity10.6 gal
Fuel typeDiesel
Transmission typeSaildrive
Propeller typeTwo-blade folding propeller


Fresh water capacity26.4 gal
Fridge/cooler capacity10.6 gal
Headroom shower room5.6 ft
Headroom6.0 ft
Length of berth6.1 ft
Width of berth*1.8 ft
Fore cabin
Headroom2.9 ft
Length of berth6.5 ft
Width of berth*3.9 ft
Aft cabin
Headroom5.6 ft
Length of berth6.3 ft
Width of berth*4.8 ft
*Maximal width : at head

Based on specification2010

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