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Nauticat 33 is a Offshore cruising sailboat built by Siltala Yachts and designed by Wilho Aarnipalo. Her first hull was built in 1967 and a Deck stepped mast mast configuration.

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NAUTICAT 33 Sailboat Specifications​


Overall Length (LOA) m / ft10.11 m / 33.17 ft
Builder(s)Siltala Yachts
Designer(s)Wilho Aarnipalo
categoryOffshore cruising sailboat
Hull TypeMonohull
Number of Hulls Built1160
First Hull Built1967
Last Hull Built1997
AppendagesKeel full keel
HelmTwin helm wheels
RudderSingle rudder on skeg
CockpitRaised aft cockpit
Rigging TypeKetch Marconi masthead
Mast LayoutDeck stepped mast
Number of Cabin(s)2
Freshwater Tank Capacity lt/gal250 L / 66 gal
Ballast Ratio0.25


Overall Length (LOA) 10.11 m / 33.17 ft
Hull Length10.1 m / 33.1 ft
Waterline Length (LWL)8.6 m / 28.2 ft
Beam (width)3.25 m / 10.8 ft
Draft1.25 m / 4.1 ft
Fore Freeboard1.8 m / 5.11 ft
Mid-Ship Freeboard1.45 / 4.10 ft
Light Displacement (MLC) 7500 kg / 16535 lb
Maximum Displacement7824 kg / 17250 lb
Ballast Weight1850 kg / 4079 lb


Critical Hull Speed7.12 knots
Capsize Screening Formula (CSF)1.65
Comfort Ratio38.38
Displacement-Length Ratio (DLR)334
Ballast Ratio0.25
Sail Area to Displacement11.43
Upwind Sail Area to Displacement12.53 m²/T / 135 ft²/T
Downwind Sail Area to Displacement20.49 m²/T / 221 ft²/T

Above Deck

Mast LayoutDeck stepped mast
Mast Height from DWL12.9 m / 42.4 ft
Rotating SparsNo
Number of Levels of Spreaders1
Spreaders Angle0 °
Spars ConstructionAluminum spars
Standing Rigging1x19 strand wire continuous
Estimated Forestay Length13.09 m / 42.94 ft
Reported Sail Area44.13 m² / 475.00 ft²
Total Sail Area44.16 m² / 475.36 ft²
Upwind Sail Area48 m² / 517 ft²
Downwind Sail Area78.5 m² / 845 ft²
Mainsail Area17.5 m² / 188 ft²
Genoa Area22 m² / 237 ft²
I40.70 ft * 12.41 m
J13.70 ft * 4.18 m
P35.10 ft * 10.70 m
E11.20 ft * 3.41 m

Engine Room

Engine(s)1 inboard engine
Engine(s) Power80 HP
Fuel typeDiesel
Fuel Tank Capacity600 L / 158.5 gal

Below Deck

Maximum Headroom6.1 ft * 1.85 m