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Sun Fast 20 is a Coastal cruiser-racer sailboat built by Jeanneau and designed by Jacek Centkowski. Her first hull was built in 1993 with an overall lengh of 6.4 m or 21 ft long and a Deck stepped mast mast configuration.

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JEANNEAU SUN FAST 20 Sailboat Specifications​


Overall Length (LOA) m / ft6.4 m / 21 ft
Designer(s)Jacek Centkowski
SeriesSun Fast
categoryCoastal cruiser-racer sailboat
Hull TypeMonohull
Number of Hulls BuiltAbout 500
First Hull Built1993
Last Hull Built1999
AppendagesCenterboard pivoting centerboard
HelmSingle tiller
RudderSingle transom hung rudder
CockpitClosed aft cockpit
Ballast TypeCast iron
Rigging TypeSloop Marconi 7/8
Mast LayoutDeck stepped mast
Ballast Ratio0.35


Overall Length (LOA) 6.4 m / 21 ft
Hull Length6.1 m / 20 ft
Waterline Length (LWL)5.75 m / 18.11 ft
Beam (width)2.4 m / 7.11 ft
Draft1.3 m / 4.4 ft
Light Displacement (MLC) 780 kg / 1720 lb
Maximum Displacement780 kg / 1720 lb
Ballast Weight270 kg / 595 lb


Critical Hull Speed5.82 knots
Capsize Screening Formula (CSF)2.63
Comfort Ratio8.73
Displacement-Length Ratio (DLR)116
Ballast Ratio0.35
Sail Area to Displacement22.9
Upwind Sail Area to Displacement22.42 m²/T / 241 ft²/T
Downwind Sail Area to Displacement47.44 m²/T / 511 ft²/T

Above Deck

Mast LayoutDeck stepped mast
Mast Height from DWL8 m / 26.2 ft
Rotating SparsNo
Number of Levels of Spreaders1
Spreaders AngleSwept-back
Spars ConstructionAluminum spars
Standing Rigging1x19 strand wire continuous
Reported Sail Area19.05 m² / 205.00 ft²
Upwind Sail Area19 m² / 205 ft²
Downwind Sail Area40.2 m² / 433 ft²
Mainsail Area12 m² / 129 ft²
Genoa Area7 m² / 75 ft²
I20.4 ft * 6.2 m
J7.10 ft * 2.37 m
P25.1 ft * 7.65 m
E9.2 ft * 2.79 m

Engine Room

Engine(s)1 outboard engine
Fuel typeGas

Below Deck

Fridge Capacity25 L / 6.6 gal
Maximum Headroom4.6 ft * 1.38 m