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First 18 Swing keel is a Coastal cruiser-racer sailboat built by Bénéteau and designed by Groupe Finot. Her first hull was built in 1978 with an overall lengh of 5.9 m or 19.5 ft long and a Deck stepped mast mast configuration.

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FIRST 18 SWING KEEL Sailboat Specifications​


Overall Length (LOA) m / ft5.9 m / 19.5 ft
Designer(s)Groupe Finot
VersionSwing keel
categoryCoastal cruiser-racer sailboat
Hull TypeMonohull
Number of Hulls Built1065
First Hull Built1978
Last Hull Built1982
AppendagesLifting keel swing keel
HelmSingle tiller
RudderSingle transom hung rudder
CockpitClosed aft cockpit
Ballast TypeCast iron
Rigging TypeSloop Marconi 7/8
Mast LayoutDeck stepped mast
Ballast Ratio0.3


Overall Length (LOA) 5.9 m / 19.5 ft
Hull Length5.5 m / 18 ft
Waterline Length (LWL)5.05 m / 16.7 ft
Beam (width)2.4 m / 7.11 ft
Waterline Beam Width1.94 m / 6.5 ft
Maximum Transverse Section0.37 m² / 4 ft²
Draft1.1 m / 3.7 ft
Wetted Area9.99 m² / 108 ft²
Fore Freeboard0.79 m / 2.7 ft
Mid-Ship Freeboard0.69 / 2.4 ft
Light Displacement (MLC) 600 kg / 1323 lb
Maximum Displacement1040 kg / 2293 lb
Ballast Weight180 kg / 397 lb


Critical Hull Speed5.45 knots
Displacement-Length Ratio (DLR)132
Ballast Ratio0.3
Upwind Sail Area to Displacement24.67 m²/T / 266 ft²/T
Downwind Sail Area to Displacement40.06 m²/T / 431 ft²/T

Above Deck

Mast LayoutDeck stepped mast
Rotating SparsNo
Number of Levels of Spreaders1
Spreaders AngleSwept-back
Spars ConstructionAluminum spars
Standing RiggingContinuous
Upwind Sail Area17.55 m² / 189 ft²
Downwind Sail Area28.5 m² / 307 ft²
Mainsail Area10 m² / 108 ft²
Genoa Area7.55 m² / 81 ft²
I22.7 ft * 6.9 m
J6.7 ft * 2 m
P22.6 ft * 6.85 m
E8.6 ft * 2.6 m

Engine Room

Engine(s)1 outboard engine

Below Deck

Maximum Headroom4.5 ft * 1.35 m
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