The Dehler 25 is a German trailerable

sailboat A sailboat or sailing boat is a boat propelled partly or entirely by sails and is smaller than a sailing ship. Distinctions in what constitutes a sailing boat and ship vary by region and maritime culture. Types Although sailboat terminology ...

that was designed by E. G. van de Stadt as a

cruiser A cruiser is a type of warship. Modern cruisers are generally the largest ships in a fleet after aircraft carriers and amphibious assault ships, and can usually perform several roles. The term "cruiser", which has been in use for several hu ...

and first built in 1984.Henkel, Steve: ''The Sailor's Book of Small Cruising Sailboats'', page 227.

International Marine S&P Global Inc. (prior to April 2016 McGraw Hill Financial, Inc., and prior to 2013 The McGraw–Hill Companies, Inc.) is an American publicly traded corporation headquartered in Manhattan, New York City. Its primary areas of business are financ ...

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, 2010. A kit version for amateur completion, was marketed as the Dehlya 25.

Production

The design was built by

Dehler Yachts Dehler is a German brand of sailing yachts. It is originated in the former Dehler shipyard that was founded in the 1960s by Willi and Heinz Dehler. As of 2009, the brand belongs to German yacht manufacturer HanseYachts, Greifswald. Dehler coop ...

West Germany West Germany is the colloquial term used to indicate the Federal Republic of Germany (FRG; german: Bundesrepublik Deutschland , BRD) between its formation on 23 May 1949 and the German reunification through the accession of East Germany on 3 O ...

(later

Germany Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated betwe ...

) between 1984 and 1995, with 350 boats completed, but it is now out of production.

Design

The Dehler 25 is a recreational

keelboat A keelboat is a riverine cargo-capable working boat, or a small- to mid-sized recreational sailing yacht. The boats in the first category have shallow structural keels, and are nearly flat-bottomed and often used leeboards if forced in open wat ...

, built predominantly of

fiberglass Fiberglass (American English) or fibreglass (Commonwealth English) is a common type of fiber-reinforced plastic using glass fiber. The fibers may be randomly arranged, flattened into a sheet called a chopped strand mat, or woven into glass cloth ...

, with wood trim. The hull is single skin fiberglass

polyester Polyester is a category of polymers that contain the ester functional group in every repeat unit of their main chain. As a specific material, it most commonly refers to a type called polyethylene terephthalate (PET). Polyesters include natural ...

, while the deck is a

balsa ''Ochroma pyramidale'', commonly known as the balsa tree, is a large, fast-growing tree native to the Americas. It is the sole member of the genus ''Ochroma''. The tree is famous for its wide usage in woodworking, with the name ''balsa'' being ...

fiberglass polyester sandwich. It has a 7/8 fractional

sloop A sloop is a sailboat with a single mast typically having only one headsail in front of the mast and one mainsail aft of (behind) the mast. Such an arrangement is called a fore-and-aft rig, and can be rigged as a Bermuda rig with triangular sa ...

rig, with

aluminum Aluminium (aluminum in American and Canadian English) is a chemical element with the symbol Al and atomic number 13. Aluminium has a density lower than those of other common metals, at approximately one third that of steel. It has ...

spars, wire

standing rigging Standing rigging comprises the fixed lines, wires, or rods, which support each mast or bowsprit on a sailing vessel and reinforce those spars against wind loads transferred from the sails. This term is used in contrast to running rigging, whic ...

, a deck-stepped mast and a single set of swept spreaders. The hull has a

raked stem The stem is the most forward part of a boat or ship's bow and is an extension of the keel itself. It is often found on wooden boats or ships, but not exclusively. Description The stem is the curved edge stretching from the keel below, up to ...

; a walk-through

reverse transom A transom is the vertical reinforcement which strengthens the stern of a boat. This flat termination of the stern is typically above the waterline. The term was used as far back as Middle English in the 1300s, having come from Latin ''transvers ...

with a gate; an internally mounted spade-type

rudder A rudder is a primary control surface used to steer a ship, boat, submarine, hovercraft, aircraft, or other vehicle that moves through a fluid medium (generally aircraft, air or watercraft, water). On an aircraft the rudder is used primarily to ...

controlled by a

tiller A tiller or till is a lever used to steer a vehicle. The mechanism is primarily used in watercraft, where it is attached to an outboard motor, rudder post or stock to provide leverage in the form of torque for the helmsman to turn the rudder. ...

and a fixed fin

keel The keel is the bottom-most longitudinal structural element on a vessel. On some sailboats, it may have a hydrodynamic and counterbalancing purpose, as well. As the laying down of the keel is the initial step in the construction of a ship, in Br ...

lifting keel A centreboard or centerboard (US) is a retractable hull appendage which pivots out of a slot in the hull of a sailboat, known as a ''centreboard trunk'' (UK) or ''centerboard case'' (US). The retractability allows the centreboard to be raised t ...

with a stub keel. It displaces . The swing keel version carries of ballast, as fixed lead ballast and of

flooding water ballast A trailer sailer is a type of sailboat that has been designed to be easily transported using a boat trailer towed by an automobile. They are generally larger than a sailing dinghy.Royce, Patrick M.: ''Royces Sailing Illustrated'', pages 52-57. De ...

. The water ballast is drained for road transport. The fixed keel version has of fixed ballast and no water ballast. The fixed fin keel-equipped version of the boat has a draft of , while the lifting keel-equipped version has a draft of with the keel extended and with it retracted, allowing operation in shallow water or ground transportation on a trailer. The boat is fitted with a

saildrive A saildrive is a transmission system for a boat whose inboard engine has a horizontal output shaft. The saildrive's input shaft is therefore also horizontal. That input shaft is geared so as to drive a vertical intermediate shaft extending dow ...

diesel engine The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is a so-call ...

or a small

outboard motor An outboard motor is a propulsion system for boats, consisting of a self-contained unit that includes engine, gearbox and propeller or jet drive, designed to be affixed to the outside of the transom. They are the most common motorised method ...

on a sliding vertical mount for docking and maneuvering. The fuel tank holds and the fresh water tank has a capacity of . For downwind sailing the boat may be fitted with a

spinnaker A spinnaker is a sail designed specifically for sailing off the wind on courses between a reach (wind at 90° to the course) to downwind (course in the same direction as the wind). Spinnakers are constructed of lightweight fabric, usually n ...

of . The design has sleeping accommodation for four people, with a double

"V"-berth A berth is a bed or sleeping accommodation on vehicles. Space accommodations have contributed to certain common design elements of berths. Beds in boats or ships While beds on large ships are little different from those on shore, the lack ...

in the bow cabin and two straight settee

quarter berth A berth is a bed or sleeping accommodation on vehicles. Space accommodations have contributed to certain common design elements of berths. Beds in boats or ships While beds on large ships are little different from those on shore, the lack ...

s in the main cabin. The

galley A galley is a type of ship that is propelled mainly by oars. The galley is characterized by its long, slender hull, shallow draft, and low freeboard (clearance between sea and gunwale). Virtually all types of galleys had sails that could be used ...

is located on the starboard side just aft of the bow cabin. The galley is equipped with a two-burner stove and a sink. A navigation station is opposite the galley, on the starboard side. The

head A head is the part of an organism which usually includes the ears, brain, forehead, cheeks, chin, eyes, nose, and mouth, each of which aid in various sensory functions such as sight, hearing, smell, and taste. Some very simple animals may ...

is located under the bow cabin "V"-berth. Cabin headroom is . The design has a

PHRF Performance Handicap Racing Fleet (PHRF) is a handicapping system used for yacht racing in North America. It allows dissimilar classes of sailboats to be raced against each other. The aim is to cancel out the inherent advantages and disadvantages ...

racing average handicap of 186 and a

hull speed Hull speed or displacement speed is the speed at which the wavelength of a vessel's bow wave is equal to the waterline length of the vessel. As boat speed increases from rest, the wavelength of the bow wave increases, and usually its crest-to-tro ...

of .

Operational history

In a 2010 review Steve Henkel wrote, "Here's something unusual: a water ballasted boat with an additional equal amount of lead ballast in a lifting keel—827 pounds in each form. That gives her a very high ballast-to-displacement ratio of 51%, and—unlike some other water ballasted boats—makes the Dehler suitably stiff. She is designed with trailering in mind, and consequently includes an automatic water ballast system, an easily removable rudder, well designed mast lowering equipment, and a specially built road trailer fitted with a four-wheeled 'floating slip-way trolley.' The heavy lifting keel is raised using a standard winch handle in a socket on deck just forward of the mast that operates a worm gear mechanism, which does the actual lifting. The boat was available either factory-finished or in various stages of construction for home finishing by using various kits and subassemblies offered as options at the factory. Best features: The Dehler is very well made and cleverly designed for easy launching and retrieval at a ramp. For example, a motor mount rides on tracks on her reverse transom for easily raising and lowering an outboard motor. She is also nicely finished. Worst features: Headroom is only 4' 9", making stays of more than a few days aboard a test of will. A canvas dodger may help in this department."

References

{{Trailer sailers and Trailer yachts worldwide Keelboats 1980s sailboat type designs Sailing yachts Trailer sailers Sailboat type designs by E. G. van de Stadt Sailboat types built by Dehler Yachts

Production

Design

Operational history

See also

References