Grand Soleil 50 - Peterson Deep draft

Sailboat specifications

The Grand Soleil 50 - Peterson is a 49’ (14.93m) cruiser-racer sailboat designed by Douglas Peterson (United States). She was built since 1993 (and now discontinued) by Del Pardo, Cantiere (Italy). The Deep draft version displays a deeper fin allowing a lower center of gravity and extra performance especially upwind.

The Grand Soleil 50 - Peterson is as well listed, on Boat-Specs.com, in Standard version (see all the versions compared).

Grand Soleil 50 - Peterson's main features

Model: Grand Soleil 50 - Peterson
Version: Deep draft
Hull type: Monohull
Category: Offshore cruiser-racer sailboat
Sailboat builder: Cantiere Del Pardo
Sailboat designer: Douglas Peterson
Sailboat range: Grand Soleil
Country: Italy
Construction: Hull and deck: GRP (glass reinforced polyester)
Number of hulls built: About 30
First built hull: 1993
Last built hull: Discontinued
Appendages: Keel : fin without bulb
Helm: Single helm wheel
Rudder: Single spade rudder
Unsinkable: No
Trailerable: No
Standard public price ex. VAT (indicative only): N/A €

Grand Soleil 50 - Peterson's main dimensions

Overall length: 50’ 2”15.31 m
Hull length: 49’14.93 m
Waterline length: 40’ 2”12.26 m
Beam (width): 14’ 1”4.3 m
Draft: 8’ 8”2.65 m
Light displacement (M_LC): 31967 lb14500 kg
Ballast weight: 10031 lb4550 kg

Grand Soleil 50 - Peterson's rig and sails

Upwind sail area: 1453 ft²135 m²
Mainsail area: 624 ft²58 m²
Genoa area: 829 ft²77 m²
Rigging type: Sloop Marconi fractional
Mast configuration: Keel stepped mast
Rotating spars: No
Spreaders angle: No spreader
Spars construction: Aluminum spars

Grand Soleil 50 - Peterson'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.: 244 ft²/T22.7 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.: 223
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 %
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.: 8.50 knots