Yacht hull is made by composite manner. Main framing is made from wooden battens with section 30õ30 mm. Batten shape allows to assemble all the yacht's planking in lock (see Picture 1).
External side of hull is covered with 4-5 layers of woven fiber glass with reinforced epoxy resin type of ED20 with total thickness - 5.5 mm. The total thickness of planking is not less than 35 mm.
The given thickness and the method of construction ensures the strength and the lightness of the hull. This construction corresponds to German Lloyd's Register requirements.
The framing of the hull consists of:
- cross framing with frames made of pasted oak battens 10õ45 mm. The total frame section is 40õ65 mm;
- main bulkheads with the pine timbers installation 100õ50 mm which is covered and pasted with water resistant plywood, 10 mm thick. The total thickness of main bulkheads is 70 mm;
- keel bar, made of pasted whole oak boards. Keel bar dimension is 160õ120 mm. Keel bar is connected with main bulkheads with bolts (12 mm in diameter) and brackets;
- floors are made of oak timber with variable sections and are used as keel bar bed. The dimension at the foundation area is 120 mm;
- the special frame made of non-corrosive angles with the size of 50x60 mm (see Picture 2).
The keel envelope is made of stainless steel and filled with the lead ballast. The total keel mass is 3.6 t. The keel is connected with keel floors by using 24 pins made of stainless steel with diameter 22 mm. Keel shape is showed on Picture 3.
The present connection was successfully tested by many yachts and never caused any problems. Bracing of the engine is carried out by the analogous method with help of floors system and metal frame (see Picture 4).
As for shape of the hull, after numerous tests for many years on the real yachts we came to the classic yacht lines, which are used in the project "Comandor 2000". Original tests of the project "Comandor 2000", 14.8 m long, 4.2 m wide gave the following results:
- speed by the engine with power 70 hp 10 knots;
- speed under sails 14 knots;
- list by speed 14 knots 14 degrees;
- steepness of run to wind up to 30 degrees;
- good rising on the wave;
- good sails centering;
- easy control response;
- the absence of the yawing motion by fair wind.
The modern wooden integral technology of Holland Firm "Van de Stadt Design" (in accordance with publications of foreign press) capture the European market thanks to the series of advantages over steel and plastic hulls:
1. With false slide (jig), hull is made without frames. This allows to make hull lighter and decrease load on spar and sails, increasing a period of exploitation of sails).
2. Special processing precludes from penetration of moisture in board planking and increases a period of exploitation of hull.
3. Absence of corrosion allows to do without spring cosmetic repair works.
4. When engine works, no vibration is sensed.
5. A big advantage over plastic hulls is absence of smell (when fuel or other toxic liquid falls on plastic that imbibes fuel and other toxic liquid).
6. The main and scientifically proved advantage of wooden vessels is ecological cleanness, absence of magnetic anomalies, leading to the chronic fatigue syndrome and it allows to interflow in harmony with the nature of water vast and not to be tired in long voyages.
Summarizing the facts, mentioned above, one can add that this technology of construction allows during 1 or 1 and a half month to make a hull of yacht, the size of which can vary from 20 meters and more. Using this technology catamarans and motor yachts can be made.