Nauticat 515

Sailboat specifications

The Nauticat 515 is a 50’7” (15.42m) cruising sailboat designed by Kaj Gustafsson (Finland). She was built between 1997 and 2018 by Nauticat Yachts (Finland).

Nauticat 515's main features

Model: Nauticat 515
Hull type: Monohull
Category: Offshore cruising sailboat
Sailboat builder: Nauticat Yachts
Sailboat designer: Kaj Gustafsson
Sailboat range: Nauticat
Country: Finland
Construction: Hull and deck: GRP (glass reinforced polyester)
First built hull: 1997
Last built hull: 2018
Appendages: Keel : fin without 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
820 000 €
(2017)

Nauticat 515's main dimensions

Hull length: 50’ 7”15.42 m
Waterline length: 40’ 1”12.22 m
Beam (width): 15’ 1”4.6 m
Draft: 7’ 2”2.2 m
Mast height from D_WL: 77’ 1”23.5 m
Fore freeboard: 5’ 8”1.75 m
Mid-ship freeboard: 5’ 5”1.65 m
Light displacement (M_LC): 52911 lb24000 kg
Ballast weight: 18078 lb8200 kg
Ballast type: Lead

Nauticat 515's rig and sails

Upwind sail area: 1482 ft²137.7 m²
Downwind sail area: 2878 ft²267.4 m²
Mainsail area: 636 ft²59.1 m²
Genoa area: 846 ft²78.6 m²
Jib area: 245 ft²22.8 m²
Stormjib area: 166 ft²15.4 m²
Symmetric spinnaker area: 2242 ft²208.3 m²
Rigging type: Sloop Marconi masthead
Mast configuration: Keel stepped mast
Rotating spars: No
Number of levels of spreaders: 3
Spreaders angle: 0 °
Spars construction: Aluminum spars
Standing rigging: 1x19 strand wire

Nauticat 515'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.: 178 ft²/T16.55 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.: 346 ft²/T32.14 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.: 372
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.: 34 %
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.: 8.48 knots