Cruising dinghy "Sea urchin" for rivers and lakes
The interest of many sailing enthusiasts in cruising dinghies is due to the fact that most of the waters where sailings are made have shallow approaches to the coast. A keel sailboat designed to accommodate three or four people, with a length of 6.5-1 m, will inevitably have a draft of about 1 m, which limits the choice of navigation area and creates certain difficulties when landing on an unequipped shore. For a dinghy of the same dimensions, the draft (with the selected daggerboard) will not exceed 0.3 m.
Basic data of the sea urchin dinghy
|Maximum length, m||6.8|
|Length according to design waterline, m||5.7|
|Maximum width, m||2.5|
|Depth in the bow/midships/on the transom, m||1.31/1.03/1.01|
|Hull/daggerboard draft, m||0.3/1.4|
For operation in amateur conditions, the absence of a permanent keel is an undeniable convenience, as it simplifies the storage and transportation of the vessel, launching it and lifting it ashore. It should also be noted that, as a rule, the cost of building a dinghy is lower than that of a similarly sized sailboat.
The body of the "Sea Urchin" has sharpie contours. The use of sharp-chine contours makes it possible to significantly simplify the construction of the hull and reduce the labor intensity of construction work. This type of contour, of course, does not contribute to the achievement of the maximum possible speeds for ships of this class, but, on the other hand, it provides somewhat greater initial stability.
The dinghy is armed with a Bermuda sloop with a staysail that does not reach the top by about 1/3 of the height of the mast. The position of the mast, the position of the attachment point of the stay and the distribution of windage are chosen from the conditions for the best centering of the vessel and the achievement of high driving performance.
The internal volume of the hull is practically divided by semi-bulkheads into sp. 4 into two separate cabins, which are equipped with four permanent berths: two in coffins amidships and two on a sofa in the forward cabin. Aft of sp. 4 are located on the left side of the wardrobe, on the right - a galley table and buffet; a folding dining table is attached to the centerboard well. In the nose, between sp. 0 and 1, another closet is arranged. Cabinets do not have doors and are closed with drapery. Cabins are also divided by drapery. Under the bow sofa and berthsThere are lockers where you can put bedding, light clothes and other everyday items. Niches with shelves are arranged in the aft bulkhead of the cabin on both sides of the centerboard well. The parts of the shelves protruding into the cabin serve as steps for descending from the cockpit into the dinghy. One of the niches is designed to accommodate a galley box, in which a gas stove in a gimbal suspension is installed. If necessary, the galley box can be moved to the cockpit or installed on the galley table.