Gin Fizz

Sailboat specifications

The Gin Fizz is a 37’5” (11.4m) cruising sailboat designed by Michel Joubert (France). She was built between 1974 and 1981 by Jeanneau (France) with 494 hulls completed.

Gin Fizz's main features

Model: Gin Fizz
Hull type: Monohull
Category: Offshore cruising sailboat
Sailboat builder: Jeanneau
Sailboat designer: Michel Joubert
Country: France
Construction: Hull and deck: GRP (glass reinforced polyester)
Number of hulls built: 494
First built hull: 1974
Last built hull: 1981
Appendages: Keel : fin with bulb
Helm: Single helm wheel
Rudder: Single semi-spade rudder
Unsinkable: No
Trailerable: No
Former French navigation category: 1
Standard public price ex. VAT (indicative only): N/A €

Gin Fizz's main dimensions

Overall length: 38’ 5”11.7 m
Hull length: 37’ 5”11.4 m
Waterline length: 30’9.15 m
Beam (width): 12’ 4”3.76 m
Draft: 6’ 2”1.9 m
Mast height from D_WL: 67’ 7”20.6 m
Light displacement (M_LC): 15432 lb7000 kg
Ballast weight: 5952 lb2700 kg
French customs tonnage: 13.63 Tx

Gin Fizz's rig and sails

Upwind sail area: 834 ft²77.5 m²
Downwind sail area: 1475 ft²137 m²
Mainsail area: 291 ft²27 m²
Genoa area: 544 ft²50.5 m²
Solent area: 291 ft²27 m²
Jib area: 199 ft²18.5 m²
Stormjib area: 97 ft²9 m²
Symmetric spinnaker area: 1184 ft²110 m²
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
Standing rigging: 1x19 strand wire

Gin Fizz's performances

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.: 228 ft²/T21.18 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.: 403 ft²/T37.44 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.: 259
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.: 39 %
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.: 7.34 knots