PENTAMARAN Russian patent published in 1997 - IPC

FIELD: shipbuilding; construction of multihulled vessels - polymarans. SUBSTANCE: outriggers are connected with transverse beams by means of stanchions; each outrigger is located between central hull and one hydroski and is made in form of trihedral longitudinal float with rounding-off between lower faces at width and height reducing starward, with oval deck (in plan) at inclination from vertical towards central hull; each hydroski is located above waterline and is made in form of longitudinal float at width and height reducing starward, with fore and aft ski-like fairings and superstructures in areas where transverse beams are connected to hydroski; each transverse beam bow-shaped with widened and thickened middle portion; its end parts are connected with central hull by means of braces; height of central hull reduces starward; superstructures mounted on central hull extend beyond its clearance limits; central hull is provided with centerboard well under mast; centerboard is located in this well for vertical motion; it may be locked at any horizontal level; mast is mounted on central hull and is secured by means of three braces; fore brace is connected with central hull and two side braces are connected with sections of transverse beams above outriggers. EFFECT: enhanced reliability. 3 dwg