Nauticat 42 Sloop

Sailboat specifications

The Nauticat 42 is a 42’8” (13m) motorsailer designed by Kaj Gustafsson (Finland). She was built between 1995 and 2018 by Nauticat Yachts (Finland) and Siltala Yachts (Finland). The Sloop version is offered with a classic masthead Marconi sloop rig.

Nauticat 42's main features

Model: Nauticat 42
Version: Sloop
Hull type: Monohull
Category: Offshore deck saloon motorsailer
Sailboat builder: Nauticat Yachts
&
Siltala Yachts
Sailboat designer: Kaj Gustafsson
Sailboat range: Nauticat
Country: Finland
Construction: GRP (glass reinforced polyester):
Single skin fiberglass polyester
Number of hulls built: About 200
First built hull: 1995
Last built hull: 2018
Appendages: Keel : fin with bulb
Helm: Twin helm wheels
Rudder: Single semi-spade rudder
Unsinkable: No
Trailerable: No
EC design category iThe CE design category indicates the ability to cope with certain weather conditions (the sailboat is designed for these conditions) A: Wind < force 9, Waves < 10m B: Wind < force 8, Waves < 8m C: Wind < force 6, Waves < 4m D: Wind < force 4, Waves < 0,5m: A
Standard public price ex. VAT (indicative only): About
446 000 €
(2017)

Nauticat 42's main dimensions

Hull length: 42’ 8”13 m
Waterline length: 34’10.35 m
Beam (width): 13’ 1”4 m
Draft: 6’ 5”1.95 m
Mast height from D_WL: 65’ 7”20 m
Fore freeboard: 5’ 5”1.65 m
Mid-ship freeboard: 4’ 8”1.42 m
Light displacement (M_LC): 35274 lb16000 kg
Ballast weight: 10141 lb4600 kg
Ballast type: Lead
French customs tonnage: 23.40 Tx

Nauticat 42's rig and sails

Upwind sail area: 1049 ft²97.5 m²
Downwind sail area: 1835 ft²170.5 m²
Mainsail area: 425 ft²39.5 m²
Genoa area: 624 ft²58 m²
Jib area: 347 ft²32.2 m²
Stormjib area: 115 ft²10.7 m²
Asymmetric spinnaker area: 1410 ft²131 m²
Rigging type: Sloop Marconi masthead
Mast configuration: Keel stepped mast
Rotating spars: No
Number of levels of spreaders: 2
Spreaders angle: 0 °
Spars construction: Aluminum spars
Standing rigging: 1x19 strand wire

Nauticat 42'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.: 165 ft²/T15.36 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.: 289 ft²/T26.85 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.: 409
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.: 29 %
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.: 7.81 knots