Sun Fizz Fin keel

Sailboat specifications

The Sun Fizz is a 38’6” (11.75m) cruising sailboat designed by Philippe Briand (France). She was built between 1980 and 1986 by Jeanneau (France) with 651 hulls completed. The Fin keel version adopts a classical fin configuration, the easiest option to provide a low center of gravity.

The Sun Fizz is as well listed, on Boat-Specs.com, in Keel and centerboard version (see all the versions compared).

Sun Fizz's main features

Model: Sun Fizz
Version: Fin keel
Hull type: Monohull
Category: Offshore cruising sailboat
Sailboat builder: Jeanneau
Sailboat designer: Philippe Briand
Country: France
Construction: Hull and deck: GRP (glass reinforced polyester)
Number of hulls built: 651
First built hull: 1980
Last built hull: 1986
Appendages: Keel : fin without bulb
Helm: Single helm wheel
Rudder: Single spade rudder
Unsinkable: No
Trailerable: No
Former French navigation category: 1
Standard public price ex. VAT (indicative only): N/A €

Sun Fizz's main dimensions

Overall length: 40’ 5”12.3 m
Hull length: 38’ 6”11.75 m
Waterline length: 33’ 6”10.2 m
Beam (width): 12’ 7”3.85 m
Draft: 6’ 5”1.95 m
Light displacement (M_LC): 16094 lb7300 kg
Ballast weight: 6614 lb3000 kg
French customs tonnage: 15.40 Tx

Sun Fizz's rig and sails

Upwind sail area: 888 ft²82.5 m²
Downwind sail area: 1539 ft²143 m²
Mainsail area: 355 ft²33 m²
Genoa area: 533 ft²49.5 m²
Solent area: 318 ft²29.5 m²
Jib area: 183 ft²17 m²
Stormjib area: 86 ft²8 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

Sun 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.: 236 ft²/T21.92 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.: 409 ft²/T38 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.: 195
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.: 41 %
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.: 7.75 knots