This boat is a concentrate of unique solutions (and it stretches thanks to the tender)

hrekoWe were quite impressed with this boat, which we are sure will make you discuss. Croatian (Dutch resident) Joso Perković, the creator and designer of HReko, has churned out this very special 10-meter (which is actually 12 as we shall see!) zero-impact unit that is a concentrate of little-seen but very interesting solutions. Such as the hull, somewhere between a monohull, a multihull, and an inflatable boat (sic!) or the tender, which becomes an integral part of the boat and transforms into a super stern platform by extending the waterline. Let the designer tell all the hot spots of the boat: the guideline of HReko’s design was absolute freedom to be able to create the boat of his dreams.

“My dream boat is a sailboat of 10m length, light and fast under sail, with great initial stability and able to sail easy and safely in upwinds. It has a minimal draft and can be leaned against the seabed if necessary. Unsinkable, of great comfort, with plenty of electricity and water. Suitable for life on the boat and long sailing.”

Such features require a multifunctional boat. The only one that can meet such demands is, according to Perković, a multiple hybrid concept boat, or rather, an “eco-hybrid-cruiser.”

“HReko has hybrid propulsion (electric propulsion without mechanical connections of the diesel engine and propeller shaft) as standard , and is a hybrid form of modern-design monohull and multihull, with sailing performance that is a combination of these two types of vessels. The combination of the anti-roll keels in the form of the floats of a small sport catamaran, the floats on the bulwarks that resemble the appearance of RIB (rigid inflatable boats), and the water ballast allow the 10m-long sailboat with a draft of only 42 cm to have the initial stability of twice as much (up to 25 degrees of inclination) as conventional monohulls of similar size.

Thanks to this concept and the use of composite materials HReko weighs almost half as much as classic monohulls of similar size and use. It is assumed that in the future this “third” stability principle will be used more by taking advantage of the well-known characteristics of multihulls; small weight, shallow draft and important initial stability while actually being a monohull with large spaces and normal hull width. Thanks to this concept, the boat is virtually unsinkable and unlike multihulls is self-righting in the event of a capsize.”

A great special feature on the HReko is the RIB-type tender, which with its rear third is tucked into the stern of the boat so that when sailing it becomes an integral part of the hull. This solution brings advantages. It solves storage and transportation of the tender while at sea, lengthens the waterline, and serves as a gangway in port. A large buoyancy reserve (2 cubic meters) and location enhance the safety of the boat.

Floats along the bulwarks also, in addition to increasing stability, represent the structural part of the coating and stiffen the hull. At the rear of the floats are arranged water ballast tanks which, together with anti-roll keels of the same volume and the diagonal transfer system, contribute up to 25 percent of the hull’s total stability. Covered mostly in polyethylene foam, 10 cm thick, they serve as fenders.

The rigging and sail plan are also distinctive: “The tilting mast concept is an attempt to facilitate sailing in carrying winds without using traditional sails (spi or gennaker) without significant loss of performance. It is actually a traditional system with two butterfly genoas only with the use of modern materials, furlers and flexible forestay. The profile is full aluminum, elliptical in cross-section with two channels placed on opposite sides, and allows for 80 sq m belly sail, which is easily controlled from the cockpit and can be furled like an ordinary genoa.”

Then there is the energy factor: “With its capabilities of converting significant amounts of wind and solar energy into electricity and with lower energy consumption for propulsion due to its lower weight, HReko can be defined as an environmentally neutral boat. HReko’s propellers will always turn, both actively and passively to recharge the batteries. In light winds using electric motor propulsion with only a few hundred W, the boat’s speed can increase by two knots.” Hreko has 9sqm of photovoltaic panels with a total power of 1500W. The positioning of the panels (800Wp) is such that they do not create disturbance during navigation, since they are part of the cabin walls with optimal angle towards the sun at mid-latitudes . The 400W panels on the cabin hatch are easily positioned in the optimal direction. The 1.8 sq m (300Wp) of panels placed over the stern are almost horizontal and free from any shade.

Finally, the interior is very spacious for a 10-meter: keep in mind that the particular shape of the hull results in a beam of 4.20 m! Benefiting most in terms of size is the saloon: completing the layout are the forward cabin, a double aft to port, and a technical area to starboard abaft the bathroom with shower.

Hull length. 10 m
LOA (with tender): 12.30 m
LWL (without and with tender) 9.65/11.20 m
Beam max. 4,20 m
Draft 0.42/0.85 m
Displacement 4,000 kg
Ballast 700 l
Fuel tank 200 l
Water tank 200 l
Sup. mainsail 26 sqm
Self-tacking flake 21 sqm
Bow sails 2 Code Zero 43 sq. m. each
Photovoltaic panels 1500 W
Hydrogenerator 2000 W
Battery capacity 20 kWh
Diesel Generator DC 48V 6 kW
POD electric motors 2 x 10 kW



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