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Sailboat specifications and datasheets

Dehler 29 race

The Dehler 29, here in "race" version, is a 28’8” monohull sailboat designed by Fietje Judel and Rolf E. Vrolijk. She was built by Dehler (Germany) and made of monolithic fiberglass / polyester. The production started in 1997 with 141 hulls completed.

The Dehler 29 is as well listed, on Boat-Specs.com, in version Standard and Shoal draft.

Dehler 29 Dehler 29 layoutDehler 29 accommodationsDehler 29 accommodationsDehler 29 accommodations
Dehler 29's   Main Features
Model Dehler 29
Version Race
Type of hull Monohull
Category Cruiser-racer sailboat
Shipyard
Designer Fietje Judel
Rolf E. Vrolijk
Construction Hull:
monolithic fiberglass / polyester
Deck:
sandwich balsa / fiberglass / polyester
First built hull 1997
Last built hull Still in production
Number of hulls built 141
Appendages Keel :
Fin with bulb
Helm 1 tiller
Rudder 1 spade rudder
Cockpit Open aft cockpit with closing system
Unsinkable No
Trailerable No
EC certification B
Standard public price ex. VAT (indicative only) About
70 000
(2017)
Dehler 29's   Main dimensions
Length overall 28’ 8”
Hull length 28’ 8”
Waterline length 26’ 2”
Beam (width) 9’ 10”
Draft 5’ 11”
Mast height from DWL 46’ 1”
Light displacement 6283 lbs
Ballast weight 2469 lbs
Ballast type Cast iron
French customs tonnage 8.52 Tx
Dehler 29's   Rig and sails
Upwind sail area 549 sq.ft
Downwind sail area 926 sq.ft
Mainsail area 280 sq.ft
Genoa area 269 sq.ft
Jib area 183 sq.ft
Symetric spinnaker area 646 sq.ft
Gennaker area 496 sq.ft
Rigging type Sloop Marconi 9/10
Rotating spars No
Mast position Keel stepped mast
Spars Mast and boom in Aluminum
Standing rigging 1x19 strand wire
Number of levels of spreaders 2
Spreaders angle Swept-back
IiFore triangle height (from mast foot to fore stay attachment) 36’ 11”
JiFore triangle base (from mast foot to bottom of forestay) 10’ 4”
PiMainsail hoist measurement (from tack to head) 36’ 1”
EiMainsail foot measurement (from tack to clew) 13’ 1”
Dehler 29's   Performances
Upwind sail area to displacementiThe 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 23 it indicates a fast sailboat.
25.37
Downwind sail area to displacementiThe 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 23 it indicates a fast sailboat.
42.78
Displacement-Length ratio (DLR)iThe Displacement Length ratio is a figure that points out the boat's weight compared to its waterline length. 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.
158
Ballast ratioiThe Ballast ratio is an indicator of the stability; it is obtained by dividing the boat's displacement by the weight of the ballast. Since the stability depends also of the hull shape and the position of the center of gravity, only boats with similar ballast arrangements and hull shape should be considered.
Higher the ballast ratio is, greater is the stability.
39 %
Hull speediAs 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.
6.87 knots
Dehler 29's   Auxiliary engine
Engine(s) 1
Engine type Inboard engine
Engine 12 HP
Fuel type Diesel
Fuel tank capacity 15.9 gal
Dehler 29's   Accommodation
Cabin(s) 2
Berth(s) (min/max) 4 / 6
Head(s) 1
Fresh water tank capacity 26.4 gal
Maximum headroom 5’ 11”

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