Detailed sailboat specifications and datasheets since 2015
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Gib'Sea 372 Deep draft

Sailboat specifications

The Gib'Sea 372 is a 35’10” (10.9m) cruising sailboat designed by Joubert Nivelt Design (France). She was built between 1987 and 1992 by Gibert Marine (France) with 116 hulls completed. The Deep draft version displays a deeper fin allowing a lower center of gravity and extra performance especially upwind.

Gib'Sea 372's main features

Model
Gib'Sea 372
Version
Deep draft
Hull type
Monohull
Category
Offshore 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
116
First built hull
1987
Last built hull
1992
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
1
Standard public price ex. VAT (indicative only)
N/A

Gib'Sea 372's main dimensions

Overall length
37’ 7”11.45 m
Hull length
35’ 10”10.9 m
Waterline length
31’ 7”9.62 m
Beam (width)
12’3.65 m
Waterline beam (width)
10’ 2”3.1 m
Draft
6’ 1”1.87 m
Mast height from DWL
49’ 4”15.04 m
Fore freeboard
4’ 4”1.3 m
Mid-ship freeboard
3’ 6”1.07 m
Light displacement (MLC)
13558 lb6150 kg
Maximum displacement (MLDC)
16094 lb7300 kg
Ballast weight
4189 lb1900 kg
Ballast type
Cast iron
French customs tonnage
12.97 Tx

Gib'Sea 372's rig and sails

Upwind sail area
752 ft²69.85 m²
Downwind sail area
1224 ft²113.7 m²
Mainsail area
277 ft²25.7 m²
Genoa area
475 ft²44.15 m²
Solent area
361 ft²33.5 m²
Jib area
223 ft²20.7 m²
Stormjib area
75 ft²7 m²
Symmetric spinnaker area
947 ft²88 m²
I
 iFore triangle height (from mast foot to fore stay top attachment)
44’ 4”13.5 m
J
 iFore triangle base (from mast foot to bottom of forestay)
13’ 1”4 m
P
 iMainsail hoist measurement (from tack to head)
39’ 5”12 m
E
 iMainsail foot measurement (from tack to clew)
12’ 10”3.9 m
Rigging type
Sloop Marconi masthead
Mast configuration
Deck stepped mast
Rotating spars
No
Number of levels of spreaders
2
Spreaders angle
0 °
Spars construction
Aluminum spars

Gib'Sea 372'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.
21.0
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.
224 ft²/T20.81 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.
365 ft²/T33.87 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.
196
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.
31 %
Wetted area
309 ft²28.75 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.
825 lb.ft114 kg.m
Maximum transverse section
15 ft²1.38 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.
7.53 knots

Gib'Sea 372's auxiliary engine

Engine(s)
1 inboard engine
Engine(s) power
27 HP
Fuel type
Diesel
Fuel tank capacity
21.1 gal80 liters

Gib'Sea 372'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
84.5 gal320 liters
Maximum headroom
6’ 6”1.97 m
Galley headroom
6’ 2”1.89 m
Head headroom
6’1.83 m

Gib'Sea 372's saloon

Maximum headroom
6’ 1”1.85 m
Saloon table length
2’ 11”0.88 m
Saloon table width (min./max.)
3’ 5”1.04 m / 3’ 8”1.14 m
Berth length
6’ 7”2 m
Chart table
2’ 8”0.83 m x 2’ 6”0.77 m
Berth width (head/elbows/knees/feet)
2’0.62 m / 2’0.62 m / 2’0.62 m / 2’0.62 m

Gib'Sea 372's fore cabin

Maximum headroom
6’1.84 m
Berth length
6’ 11”2.1 m
Berth width (head/elbows/knees/feet)
5’ 2”1.6 m / 3’ 11”1.2 m / 2’ 7”0.8 m / 1’ 4”0.4 m

Gib'Sea 372's aft cabin

Maximum headroom
6’1.83 m
Berth length
6’ 7”2 m
Berth width (head/elbows/knees/feet)
5’ 2”1.6 m / 4’ 11”1.5 m / 4’ 7”1.4 m / 3’ 11”1.2 m
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