Detailed sailboat specifications and datasheets since 2015
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Dehler 42 Competition

Sailboat specifications

The Dehler 42 is a 40’8” (12.42m) cruiser-racer sailboat designed by Judel/Vrolijk (Germany). She is built since 2016 by Dehler (Germany). The Competition version offers a deeper L-shaped keel bringing extra performance especially upwind.

The Dehler 42 is as well listed, on Boat-Specs.com, in Standard and Shoal draft version (see all the versions compared).

Dehler 42's main features

Model
Dehler 42
Version
Competition
Hull type
Monohull
Category
Cruiser-racer sailboat
Sailboat builder
Sailboat designer
Country
Germany
Construction
GRP (glass reinforced polyester):
Sandwich PVC fiberglass with carbon fiber reinforcements
First built hull
2016
Last built hull
Still in production
Appendages
Keel : fin with bulb
Helm
Twin helm wheels
Rudder
Single 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 
209 000
 (2020)

Dehler 42's main dimensions

Overall length
42’ 1”12.84 m
Hull length
40’ 8”12.42 m
Waterline length
37’ 8”11.5 m
Beam (width)
12’ 10”3.91 m
Draft
7’ 10”2.38 m
Mast height from DWL
66’ 5”20.25 m
Light displacement (MLC)
18287 lb8295 kg
Ballast weight
6603 lb2995 kg
Ballast type
Cast iron fin with lead bulb

Dehler 42's rig and sails

Upwind sail area
1082 ft²100.5 m²
Downwind sail area
2180 ft²202.5 m²
Mainsail area
619 ft²57.5 m²
Genoa area
463 ft²43 m²
Symmetric spinnaker area
1399 ft²130 m²
Asymmetric spinnaker area
1561 ft²145 m²
Code 0 area
840 ft²78 m²
I
 iFore triangle height (from mast foot to fore stay top attachment)
55’ 5”16.9 m
J
 iFore triangle base (from mast foot to bottom of forestay)
15’ 2”4.63 m
P
 iMainsail hoist measurement (from tack to head)
55’ 5”16.9 m
E
 iMainsail foot measurement (from tack to clew)
19’5.8 m
Rigging type
Sloop Marconi 9/10
Mast configuration
Keel stepped mast
Rotating spars
No
Number of levels of spreaders
2
Spreaders angle
Swept-back
Spars construction
Aluminum spars (carbon fiber spars as an option)
Standing rigging
Dyform

Dehler 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.
264 ft²/T24.53 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.
532 ft²/T49.42 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.
154
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.
31 %
Righting moment @ 30°
 iThe righting moment is a moment (torque) that tends to restore a boat to its previous position after heeling. Its value corresponds to the torque needed to heel the boat for this angle.
Higher the righting moment is for an angle, greater is the stability.
36165 lb.ft5000 kg.m
Maximum righting moment
 iThe righting moment is a moment (torque) that tends to restore a boat to its previous position after heeling. Its value corresponds to the torque needed to heel the boat for this angle.
Higher the righting moment is for an angle, greater is the stability.
41228 lb.ft5700 kg.m @ 50.00 °
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.
8.23 knots

Dehler 42's auxiliary engine

Engine(s)
1 inboard engine
Engine(s) power
38 HP
Fuel type
Diesel
Fuel tank capacity
42.3 gal160 liters

Dehler 42's accommodations and layout

Cockpit
Closing aft cockpit with opening system
Cabin(s) (min./max.)
2 / 3
Berth(s) (min./max.)
4 / 8
Head(s) (min./max.)
1 / 2
Freshwater tank capacity
83.2 gal315 liters
Fridge/ice-box capacity
34.3 gal130 liters
Boiler capacity
5.3 gal20 liters
Have you spotted incorrect data?  You can report it in the forum or contact the webmaster

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