Dehler 30 OD

Sailboat specifications

The Dehler 30 OD is a 30’ (9.14m) one design sailboat designed by Judel/Vrolijk (Germany). She is built since 2019 by Dehler (Germany).

Find out more about the Dehler 30 OD on Boat-Spec's blog: European Yacht of the Year 2020 nominated sailboats.

Dehler 30 OD's main features

Model: Dehler 30 OD
Hull type: Monohull
Category: One design sailboat
Sailboat builder: Dehler
Sailboat designer: Judel/Vrolijk
Country: Germany
Construction: GRP (glass reinforced polyester):
- Hull: Sandwich PVC fiberglass polyester (vacuum infusion)
- Deck: Sandwich PVC fiberglass polyester (vacuum infusion)
First built hull: 2019
Last built hull: Still in production
Appendages: Keel : T-shaped keel (with bulb)
Helm: Single tiller
Rudder: Twin spade rudders
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
109 000 €
(2020)

Dehler 30 OD's main dimensions

Overall length: 33’ 10”10.3 m
Hull length: 30’9.14 m
Waterline length: 29’ 5”8.97 m
Beam (width): 10’ 10”3.28 m
Draft: 7’ 2”2.2 m
Mast height from D_WL: 46’ 11”14.3 m
Light displacement (M_LC): 6173 lb2800 kg
Ballast weight: 2072 lb940 kg
Ballast type: Carbon fiber fin with lead bulb
Water ballast: Aft water ballast
Water ballast capacity: 252.8 gal200 liters

Dehler 30 OD's rig and sails

Upwind sail area: 673 ft²62.5 m²
Downwind sail area: 1389 ft²129 m²
Mainsail area: 366 ft²34 m²
Jib area: 307 ft²28.5 m²
Asymmetric spinnaker area: 1023 ft²95 m²
Code 0 area: 484 ft²45 m²
I iFore triangle height (from mast foot to fore stay top attachment): 41’ 1”12.54 m
J iFore triangle base (from mast foot to bottom of forestay): 13’ 6”4.1 m
P iMainsail hoist measurement (from tack to head): 39’ 5”12 m
E iMainsail foot measurement (from tack to clew): 13’ 1”4 m
Rigging type: Sloop Marconi (square top mainsail) 9/10
Mast configuration: Deck stepped mast
Rotating spars: No
Number of levels of spreaders: 1
Spreaders angle: 27 °
Spars construction: Carbon fiber mast and aluminum boom
Standing rigging: Single-strand (ROD) discontinuous

Dehler 30 OD'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.: 339 ft²/T31.46 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.: 699 ft²/T64.94 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.: 110
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 %
Righting moment @ 1° 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.: 579 lb.ft80 kg.m
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.: 13381 lb.ft1850 kg.m
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.: 7.27 knots