Detailed sailboat specifications and datasheets since 2015
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Bestevaer 45ST Pure Swing keel

Sailboat specifications

The Bestevaer 45ST Pure is a 46’10” (14.25m) cruising sailboat designed by Dykstra Naval Architects (Netherlands). She is built since 2016 by K&M Yachtbuilder (Netherlands). The Swing keel version adopts an appendage configuration without compromise between draft and performance. The only drawbacks are the space taken inside and the price of the system...

The Bestevaer 45ST Pure is as well listed, on, in Fin keel version (see all the versions compared).

Find out more about the Bestevaer 45ST Pure on Boat-Spec's blog: European Yacht of the Year 2017.

Bestevaer 45ST Pure's main features

Bestevaer 45ST Pure
Swing keel
Hull type
Offshore cruising sailboat
Sailboat builder
Sailboat designer
Hull and deck: aluminum
First built hull
Last built hull
Still in production
Lifting keel : swing keel
Single tiller (helm wheel in option)
Twin spade rudders
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
Standard public price ex. VAT (indicative only)
545 000

Bestevaer 45ST Pure's main dimensions

Hull length
46’ 10”14.25 m
Waterline length
41’ 6”12.64 m
Beam (width)
13’ 4”4.05 m
9’ 8”2.95 m
Draft when appendages up
4’ 7”1.4 m
Light displacement (MLC)
28660 lb13000 kg
Ballast type
Cast iron

Bestevaer 45ST Pure's rig and sails

Upwind sail area
1109 ft²103 m²
Mainsail area
624 ft²58 m²
Genoa area
484 ft²45 m²
Staysail area
253 ft²23.5 m²
Rigging type
Cutter Marconi 19/20
Mast configuration
Deck stepped mast
Rotating spars
Number of levels of spreaders
Spreaders angle
Spars construction
Aluminum spars

Bestevaer 45ST Pure'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.
201 ft²/T18.63 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.
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.
8.63 knots

Bestevaer 45ST Pure's auxiliary engine

1 inboard engine
Engine(s) power
57 HP
Fuel type
Fuel tank capacity
153.2 gal580 liters

Bestevaer 45ST Pure's accommodations and layout

Closed aft cockpit
Cabin(s) (min./max.)
2 / 3
Berth(s) (min./max.)
4 / 8
Freshwater tank capacity
121.5 gal460 liters
Holding tank capacity
15.9 gal60 liters
Boiler capacity
10.6 gal40 liters

Bestevaer 45ST Pure's saloon

Saloon table length
4’ 7”1.4 m
Saloon table width
3’ 11”1.2 m
Berth length
6’ 7”2 m
Berth width
2’ 6”0.75 m

Bestevaer 45ST Pure's fore cabin

Berth length
6’ 11”2.1 m
Berth width
4’ 7”1.4 m

Bestevaer 45ST Pure's aft cabin

Berth length
6’ 11”2.1 m
Berth width
4’ 4”1.3 m
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