Gibert Marine
Gib'Sea 105

The Gib'Sea 105 is a calm cruiser but well designed. The rather limited sail area and good stiffness allow limiting the sail maneuver but make this sailboat a bit lazy in light winds. A "Plus" version, with a taller mast with 2 sets of spreaders and a 7m larger sail area, allows her to be more comfortable in light conditions, without turning her into racing boat. In any case she is cruise oriented and the building quality is reassuring to consider long navigation.

The Gib'Sea 106 was produced in parallel she is a lengthened version of the Gib'Sea 105, the extra 40cm – 1.3ft allowing her to adopt a second rear cabin.

See the Gib'Sea 105's specifications on

Main Features

ShipyardGibert Marine
ModelGib'Sea 105
Sailboat typeCruising monohull
DesignerMichel Joubert
Bernard Nivelt
Building years (first/last)1980 / 1987
Number built359
PredecessorGib'Sea 35-1
Successor Gib'Sea 372
ConstructionFiberglass/polyester, monolithic hull, balsa sandwich deck
Appendage typeTrapezoidal keel
Ballast typeCast iron
Rudder bladeSingle rudder with socket
RudderSingle tiller (helm wheel in option)
Main dimensions
Hull length34.3 ft
Waterline length29.4 ft
Beam over all11.8 ft
Draft5.9 ft
Light displacement10141 lbs
Ballast3748 lbs
French customs tonnage15.70 Tx

Rig and sails

Rig typeMasthead Sloop
MastDeck stepped mast
Rig materialMast and boom in Aluminum
Standing rigging material1x19 strand wire
Number of rows of spreader2
Spreader angleNeutral (0°)
Spinnaker typeSymmetrical spinnaker
Upwind sailarea764 ft²
Downwind sailarea1308 ft²
Mainsail area274 ft²
Genoa area490 ft²
Working jib area366 ft²
Stormsail area85 ft²
Spinnaker area1033 ft²

PMainsail hoist measurement (from tack to head)

35.4 ft

EMainsail foot measurement (from tack to clew)

12.5 ft

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

38.2 ft

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

12.8 ft

LLGenoa hoist measurement (from tack to head)

41.7 ft

LPGenoa perpendicular measurement from clew to luff.

21.3 ft

SLSymmetrical spinnaker hoist measurement (from tack to head)

41.3 ft

SMWSymmetrical spinnaker width

25.8 ft


Ballast ratio37.0 %
Upwind sailarea / displacement166.1 ft²/Ton
Downwind sailarea / displacement284.3 ft²/Ton
HN (French rating)16.0

Auxiliary engine

Type1 x YM2 GM
Engine power1 x 28 hp
Fuel capacity26.4 gal
Fuel typeDiesel
Transmission typeShaft-line


Number of cabin2
Number of berth8
Number of shower room1
Fresh water capacity84.5 gal
Fridge/cooler capacity18.5 gal
Headroom max6.0 ft
Headroom shower room5.6 ft
Headroom6.1 ft
Table dimensions3.1 x 3.2 ft
Length of berth7.4 ft
Fore cabin
Headroom5.7 ft
Aft cabin
Headroom5.8 ft

Based on specification1983

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