Nauticat 33

Sailboat specifications

The Nauticat 33 is a 33’1” (10.1m) cruising sailboat designed by Wilho Aarnipalo (Finland). She was built between 1967 and 1997 by Siltala Yachts (Finland).

Nauticat 33's main features

Model: Nauticat 33
Hull type: Monohull
Category: Offshore cruising sailboat
Sailboat builder: Siltala Yachts
Sailboat designer: Wilho Aarnipalo
Sailboat range: Nauticat
Country: Finland
Construction: GRP (glass reinforced polyester):
Single skin fiberglass polyester
Number of hulls built: About 1500
First built hull: 1967
Last built hull: 1997
Appendages: Keel : full keel
Helm: Twin helm wheels
Rudder: Single rudder on skeg
Unsinkable: No
Trailerable: No
Former French navigation category: 2
Standard public price ex. VAT (indicative only): N/A €

Nauticat 33's main dimensions

Hull length: 33’ 1”10.1 m
Waterline length: 28’ 2”8.6 m
Beam (width): 10’ 8”3.25 m
Draft: 4’ 1”1.25 m
Mast height from D_WL: 42’ 4”12.9 m
Fore freeboard: 5’ 11”1.8 m
Mid-ship freeboard: 4’ 10”1.45 m
Light displacement (M_LC): 16535 lb7500 kg
Ballast weight: 4079 lb1850 kg
French customs tonnage: 13.60 Tx

Nauticat 33's rig and sails

Upwind sail area: 517 ft²48 m²
Downwind sail area: 845 ft²78.5 m²
Mainsail area: 188 ft²17.5 m²
Mizzen sail area: 91 ft²8.5 m²
Genoa area: 237 ft²22 m²
Jib area: 118 ft²11 m²
Stormjib area: 81 ft²7.5 m²
Symmetric spinnaker area: 565 ft²52.5 m²
Rigging type: Ketch Marconi masthead
Mast configuration: Deck stepped mast
Rotating spars: No
Number of levels of spreaders: 1
Spreaders angle: 0 °
Spars construction: Aluminum spars
Standing rigging: 1x19 strand wire continuous

Nauticat 33'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.: 135 ft²/T12.53 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.: 221 ft²/T20.49 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.: 334
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.: 25 %
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.: 7.12 knots