Test report mixed offshore, double-handed & single-handed
Dehler 30 one design wins the Oscar of offshore sail racing in North America and Europe
The Dehler 30 one design has won two awards in SAIL magazine’s Best Boats 2021 Awards. The offshore racer-cruiser won over the jury of experts in both the "Performance Boat 30ft or Less" category, and in "Systems", where the Dehler Stealth Drive was honored as the best technical innovation.
Recognition in North America comes after the Dehler 30 one design was named European Yacht of the Year 2020. The American judges were impressed by the racer-cruiser’s performance and ease of handling - even at high speeds. The winning Dehler Stealth Drive, which allows the use of a powerful fixed propeller that can be quickly folded up and integrated into the hull when not in use, comes as a standard feature on the Dehler 30 one design.
Adam Cort, Editor of SAIL magazine: “The jury unanimously voted the boat the winner in the category "Performance Boats 30ft or Less". Besides the design, the decisive factor was the spectacular test sail on the Chesapeake Bay, which was definitely one of the best runs of recent years in the Best Boats Awards. The Dehler is an incredibly exciting sail, but always easy to control. Besides the fun factor, this keeps the average speed consistently high, which is where success in long-distance racing lies."
Douglas Brophy, Sales Manager Dehler in North America: “It is great for us to be recognized by the sailing experts. The Dehler 30 od is designed for the sailing purist, not just for short-handed offshore racing. As the reward for our Dehler Stealth Drive shows, we are once again leading the industry in system innovation.“
Seeing Double With the Dehler 30 One-Design offshore yacht
TEST REPORT MIXED OFFSHORE, DOUBLE-HANDED & SINGLE-HANDED
- Dehler 30 one design Testbericht Search Magazine 76 file type: PDFsize: 1,20 MiBupdated: 19.03.2021 00:54
- Dehler 30 one design Testbericht Yacht 4 - 2020 file type: PDFsize: 1,80 MiBupdated: 19.03.2021 00:54
- Dehler 30 one design Vela-e-motore - N°2020 file type: PDFsize: 3,60 MiBupdated: 19.03.2021 00:53
- Dehler 30 one design Testbericht Segeln - Februar 2020 file type: PDFsize: 3,91 MiBupdated: 19.03.2021 00:53
- Dehler 30 one design Testbericht yacht revue 19 - 20 file type: PDFsize: 15,21 MiBupdated: 19.03.2021 00:52
- Dehler 30 one design Testbericht Yacht 22 - 2019 file type: PDFsize: 12,39 MiBupdated: 19.03.2021 00:52
- SAIL Oct/Nov 20 - Dehler 30 one design file type: PDFsize: 16,99 MiBupdated: 19.03.2021 00:51
- Voile Magazine N°300 - Dehler file type: PDFsize: 27,22 MiBupdated: 19.03.2021 00:51
There were other features standard to the Dehler 30 that attracted Corson: lightweight and energy-efficient lithium phosphate batteries, less than half the weight of conventional AGM battery power units, and the small but efficient 2-cylinder Nanni inboard diesel engine. One might wonder how an engine that weighs only 87 kg (191 lbs.) and delivers 10 hp can be an effective powerplant for a boat this size. This is due to the efficiency of yet another really cool feature normally found only on high-tech custom raceboats: the retractable propeller and shaft assembly called the “stealth drive.” This clever system deploys the shaft and efficient three-blade propeller downward away from the hull when needed, and lifts it back up into its position flush with the hull, allowing for both fast powering and drag-free sailing.
“I’ve always worried about drag, and had small folding props on raceboats,” Corson says. “Having a cruising prop available when you need it is outstanding, especially when it can disappear when you don’t need it.”Anticipating only two crew on board for double-handed sailing means stability upwind and reaching has to come from a source other than hiked crew. Some of this is produced by the hard chines in the hull shape that carry the hull volume further outboard to achieve form stability when the boat starts to heel, yet when upright is not dragging too much through the water in light air. This design strategy seems to work, since the measured stability index is about 117, just exceeding the minimum 115 needed for being compliant with the offshore category of safety regulations.
However, this boat powers up quite quickly with its generous sail plan, so achieving stability without more crew weight is important. The Dehler 30 uses water ballast tanks, which are certainly not new technology, but it can be a challenge to find the correct tradeoff of the amount of weight needed to achieve stability and where to place the tanks where they will optimize the sailing trim without adding weight. To do this, Judel/Vrolijk placed the tank at about the companionway position and outboard at about the chine, with 200 liters (53 gal) determined to be the optimum amount: not so much to add excess weight and take too long to move side-to-side, but just enough to offset the righting moment produced by about three hiked crew.