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Sailboat specifications and datasheets

Gib'Sea 302 deep draft

The Gib'Sea 302, here in "deep draft" version, is a 29’5” monohull sailboat designed by Michel Joubert and Bernard Nivelt. She was built by Gibert Marine (France) and made of monolithic fiberglass / polyester. This sailboat was produced between 1992 and 1996 with 145 hulls completed.

The Gib'Sea 302 belongs to the Gib'Sea range.

Gibert Marine Gib'Sea 302 Gibert Marine Gib'Sea 302 sailplanGibert Marine Gib'Sea 302 sailingGibert Marine Gib'Sea 302 sailingGibert Marine Gib'Sea 302 accommodationsGibert Marine Gib'Sea 302 accommodations
Gib'Sea 302's   Main Features
Model Gib'Sea 302
Version Deep draft
Type of hull Monohull
Shipyard
Designer Michel Joubert
Bernard Nivelt
Range Gib'Sea
Construction Hull:
monolithic fiberglass / polyester
Deck:
sandwich fiberglass / polyester
First built hull 1992
Last built hull 1996
Number of hulls built 145
Appendages Keel :
Fin with bulb
Helm 1 tiller
Rudder 1 spade rudder
Unsinkable No
Trailerable No
French navigation category 2
Standard public price (indicative only) N/A
Gib'Sea 302's   Main dimensions
Hull length 29’ 5”
Waterline length 25’ 7”
Beam (width) 11’
Draft 6’
Mast height from DWL 46’ 7”
Fore freeboard 3’ 8”
Mid-ship freeboard 3’ 1”
Light displacement 7055 lbs
Ballast weight 2425 lbs
Ballast type Cast iron
French customs tonnage 7.97 Tx
Gib'Sea 302's   Rig and sails
Upwind sail area 558 sq.ft
Downwind sail area 894 sq.ft
Mainsail area 254 sq.ft
Genoa area 304 sq.ft
Symetric spinnaker area 640 sq.ft
Rigging type Sloop Marconi 9/10
Spars Mast and boom in Aluminum
Number of levels of spreaders 2
Spreaders angle Swept-back
IiFore triangle height (from mast foot to fore stay attachment) 37’ 10”
JiFore triangle base (from mast foot to bottom of forestay) 10’ 8”
PiMainsail hoist measurement (from tack to head) 35’ 10”
EiMainsail foot measurement (from tack to clew) 12’ 10”
Gib'Sea 302's   Performances
HN (French rating) 20.0
Upwind sail area to displacementiThe ratio sail area to displacement is obtained by dividing the sail area by the boat's displaced volume to the power two-thirds.
The ratio sail area to displacement can be used to compare the relative sail plan of different sailboats no matter what their size. Upwind : under 18 the ratio indicates a cruise oriented sailboat with limited performances especially in light wind, while over 23 it indicates a fast sailboat.
23.85
Downwind sail area to displacementiThe ratio sail area to displacement is obtained by dividing the sail area by the boat's displaced volume to the power two-thirds.
The ratio sail area to displacement can be used to compare the relative sail plan of different sailboats no matter what their size. Upwind : under 18 the ratio indicates a cruise oriented sailboat with limited performances especially in light wind, while over 23 it indicates a fast sailboat.
38.27
Displacement-Length ratio (DLR)iThe Displacement Length ratio is a figure that points out the boat's weight compared to its waterline length. DLR is obtained by dividing the boat's displacement in tons by the cube of one one-hundredth of the waterline length (in feet).
The DLR can be used to compare the relative mass of different sailboats no matter what their length: a DLR less than 180 is indicative of a really light sailboat (race boat made for planning), while a DLR greater than 300 is indicative of a heavy cruising sailboat.
191
Ballast ratioiThe Ballast ratio is an indicator of the stability; it is obtained by dividing the boat's displacement by the weight of the ballast. Since the stability depends also of the hull shape and the position of the center of gravity, only boats with similar ballast arrangements and hull shape should be considered.
Higher the ballast ratio is, greater is the stability.
34 %
Hull speediAs a ship moves in the water, it creates standing waves that oppose its movement. This effect increases dramatically the resistance when the boat reaches a speed-length ratio (speed-length ratio is the ratio between the speed in knots and the square root of the waterline length in feet) of about 1.2 (corresponding to a Froude Number of 0.35) . This very sharp rise in resistance, between speed-length ratio of 1.2 to 1.5, is insurmountable for heavy sailboats and so becomes an apparent barrier. This leads to the concept of "hull speed".
The hull speed is obtained by multiplying the square root of the waterline length (in feet) by 1.34.
6.78 knots
Gib'Sea 302's   Auxiliary engine
Engine(s) 1
Engine type Inboard engine
Engine (min/max) 18 HP
Fuel type Diesel
Fuel tank capacity 15.9 gal
Gib'Sea 302's   Accommodation
Cabin(s) 2
Berth(s) (min/max) 4 / 6
Head(s) 1
Fresh water tank capacity 47.6 gal

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