Sail area / displacement
How much sail the boat carries for its weight — its power in light air.
- 23.3· Performance
How it is worked out
sail area (ft²) ÷ (displacement as ft³ of seawater)^⅔
published upwind sail area

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Dehler 46 SQ exterior view — HanseYachts AG
* A standard reference image, not the actual boat — shown to help visualise this model's published dimensions.
From the published figures: CE Category A · LOA 14.94 m · fresh water 450 L
From the published figures: performance cruiser · 3 cabins · SA/D 23.3
From the published figures: LOA 14.94 m · 3 cabins · fresh water 450 L
Tags are derived from certified class, length, sail area, accommodation and tankage using the criteria described on the Sources page; an editor may add or remove one.
Classic yacht-design ratios worked out from the builder's published figures, each shown against the bands designers read it by.
How much sail the boat carries for its weight — its power in light air.
sail area (ft²) ÷ (displacement as ft³ of seawater)^⅔
published upwind sail area
How heavy the boat is for its waterline length. Lower is lighter and quicker; higher is steadier and roomier.
displacement (long tons) ÷ (0.01 × waterline length in ft)³
The share of the weight carried in the keel — a rough guide to stiffness, though how deep that weight sits matters as much.
ballast ÷ displacement × 100
Ted Brewer's measure of how gently a boat moves in a seaway. Higher means a slower, easier motion.
displacement (lb) ÷ (0.65 × (0.7 × LWL + 0.3 × LOA) × beam^1.333), lengths in ft
A guide from the inquiry after the 1979 Fastnet race: below 2 was taken as suited to ocean passages. It ignores hull shape and where the ballast sits.
beam (ft) ÷ (displacement as ft³ of seawater)^⅓
Roughly the speed a displacement hull reaches before it has to climb its own bow wave.
1.34 × √(waterline length in ft), in knots
Most builders publish a light displacement. The ratios were defined on a loaded boat, so every boat here reads a little lighter than a surveyor's figure would — all alike, which keeps them comparable.
What the builder publishes about how fast, how strong and how much the boat carries.
Fuel and water on one scale: a tank twice the height holds twice as much.
Certified CE design category A (Ocean): the wind and waves the EU Recreational Craft Directive says this boat is designed to take.
Sheltered waters
Inshore
Offshore
Ocean
Design limits set by the EU Recreational Craft Directive (2013/53/EU), in significant wave height. A category covers the conditions of those below it. It is the limit the boat was designed to, not a promise that it is safe in any conditions within it — that judgement stays with the skipper.
Figures read fromdehler.com/api/get-data· yachts-specyficationsread 9/19/2026
1 drawing from the builder's page: general arrangement, sail plan, profile.

Dehler 46 SQ sail plan — HanseYachts AG (Dehler)
Premium production
German performance-cruiser marque founded by Willi Dehler in 1963, built by HanseYachts AG in Greifswald since 2009 — three judel/vrolijk-designed models from 10.7 to 14.9 m (Dehler 34, 38 SQ, 46 SQ), each with standard and competition rigs and three or four keel options.
Dehler was born in Freienohl in the German Sauerland, where the electrical engineer Willi Dehler, who had turned to caravan building in GRP, exhibited a 3-metre dinghy named Winnetou at a trade fair in 1963 and took fifty orders. With his brother Heinz he launched the Varianta, the brand's first keel yacht, in 1965 -- the Varianta 65 became Europe's best-selling GRP yacht by 1973, 'the VW Beetle for the water' -- and the Optima 83 realised his dream of a fast, trailerable sea-going boat; the Sprinta 70 of 1976 was the first series yacht with a self-tacking jib. The 1980s brought the performance-cruiser category with the regatta-winning db1 and the Dehler 34 of 1986, and the yard focused on yachts over ten metres under the Dehler name. The collaboration with judel/vrolijk & co began in the mid-1990s with the Dehler 29 of 1997, Willi Dehler died in 1999 at seventy, and after a series of owners the marque settled under HanseYachts in 2009, with Karl Dehler rejoining product development; all construction moved from Freienohl to Greifswald in 2012, the Dehler 38 of 2013 was Boat of the Year at boot 2014, and the Dehler 30 One Design of 2019 gained its own class association in 2020.
Visit brand pageEvery model Dehler publishes, by length — where this one sits in the range.
Boats this boat's designers also drew, for other builders too. Credits are grouped only where the names clearly agree, however each builder spelled them; an unclear one is left out.
Grand Soleil
LOA: 15 m
Beneteau
LOA: 14.65 m