Detailed sailboat specifications and datasheets since 2015
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Gib'Sea 96 Deep draft

Sailboat specifications

The Gib'Sea 96 is a 31’10” (9.7m) cruising sailboat designed by Joubert Nivelt Design (France). She was built between 1983 and 1987 by Gibert Marine (France) with 236 hulls completed. The Deep draft version displays a deeper fin allowing a lower center of gravity and extra performance especially upwind.

Gib'Sea 96's main features

Model
Gib'Sea 96
Version
Deep draft
Hull type
Monohull
Category
Cruising sailboat
Sailboat builder
Sailboat designer
Sailboat range
Country
France
Construction
GRP (glass reinforced polyester):
- Hull: Single skin fiberglass polyester
- Deck: Sandwich balsa fiberglass polyester
Number of hulls built
236
First built hull
1983
Last built hull
1987
Appendages
Keel : fin without bulb
Helm
Single tiller (helm wheel in option)
Rudder
Single semi-spade rudder
Unsinkable
No
Trailerable
No
Former French navigation category
2
Standard public price ex. VAT (indicative only)
N/A

Gib'Sea 96's main dimensions

Overall length
33’ 1”10.1 m
Hull length
31’ 10”9.7 m
Waterline length
27’ 1”8.26 m
Beam (width)
10’ 10”3.3 m
Waterline beam (width)
9’ 1”2.76 m
Draft
5’ 8”1.74 m
Mast height from DWL
45’ 4”13.8 m
Fore freeboard
3’ 8”1.14 m
Mid-ship freeboard
3’ 1”0.93 m
Light displacement (MLC)
9678 lb4390 kg
Maximum displacement (MLDC)
11684 lb5300 kg
Ballast weight
2646 lb1200 kg
Ballast type
Cast iron
French customs tonnage
10.21 Tx

Gib'Sea 96's rig and sails

Upwind sail area
637 ft²59.21 m²
Downwind sail area
1047 ft²97.3 m²
Mainsail area
240 ft²22.3 m²
Genoa area
397 ft²36.91 m²
Solent area
296 ft²27.5 m²
Jib area
174 ft²16.15 m²
Stormjib area
70 ft²6.5 m²
Symmetric spinnaker area
807 ft²75 m²
I
 iFore triangle height (from mast foot to fore stay top attachment)
40’12.2 m
J
 iFore triangle base (from mast foot to bottom of forestay)
12’ 1”3.7 m
P
 iMainsail hoist measurement (from tack to head)
36’ 1”11 m
E
 iMainsail foot measurement (from tack to clew)
11’ 10”3.6 m
Rigging type
Sloop Marconi fractional
Mast configuration
Deck stepped mast
Rotating spars
No
Number of levels of spreaders
1
Spreaders angle
0 °
Spars construction
Aluminum spars
Standing rigging
1x19 strand wire continuous

Gib'Sea 96's performances

HN (French rating)
 iHN or "Handicap Nationale" is an empirical rating system used in France allowing various monohulls, of different sizes and designs, to race each other fairly. It is particularly suitable for cruiser and cruiser-racer. Therefore, by comparing these values, we can have an indication of the relative speed of 2 boats.
16.5
Upwind sail area to displacement
 iThe 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 25 it indicates a fast sailboat.
238 ft²/T22.08 m²/T
Downwind sail area to displacement
 iThe 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.
391 ft²/T36.29 m²/T
Displacement-length ratio (DLR)
 iThe Displacement Length Ratio (DLR) is a figure that points out the boat's weight compared to its waterline length. The 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.
221
Ballast ratio
 iThe Ballast ratio is an indicator of stability; it is obtained by dividing the boat's displacement by the mass of the ballast. Since the stability depends also of the hull shapes and the position of the center of gravity, only the boats with similar ballast arrangements and hull shapes should be compared.

The higher the ballast ratio is, the greater is the stability.
27 %
Wetted area
244 ft²22.68 m²
Righting moment @ 1°
 iThe righting moment is a moment (torque) that tends to restore a boat to its previous position after heeling. Its value corresponds to the torque needed to heel the boat for this angle.
Higher the righting moment is for an angle, greater is the stability.
574 lb.ft79 kg.m
Maximum transverse section
13 ft²1.21 m²
Critical hull speed
 iAs 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.
6.98 knots

Gib'Sea 96's auxiliary engine

Engine(s)
1 inboard engine
Engine(s) power (min./max.)
18 HP / 28 HP
Fuel type
Diesel
Fuel tank capacity
26.4 gal100 liters

Gib'Sea 96's accommodations and layout

Cockpit
Closed aft cockpit
Cabin(s) (min./max.)
2 / 3
Berth(s) (min./max.)
6 / 8
Head(s)
1
Freshwater tank capacity
66 gal250 liters
Maximum headroom
6’ 2”1.89 m
Galley headroom
6’1.83 m
Head headroom
5’ 6”1.69 m

Gib'Sea 96's saloon

Maximum headroom
6’1.83 m
Saloon table length
3’ 1”0.93 m
Saloon table width
3’0.91 m
Berth length
6’ 2”1.9 m
Berth width
2’ 10”0.85 m

Gib'Sea 96's fore cabin

Maximum headroom
5’ 6”1.68 m
Berth length
6’ 1”1.85 m
Berth width
5’ 2”1.6 m

Gib'Sea 96's aft cabin

Maximum headroom
5’ 10”1.76 m
Berth length
6’ 1”1.85 m
Berth width
4’ 6”1.36 m
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