Ship i.e. trirama, has frame masts connected with each other on upper part by rail, sails firmly fixed to shell and oriented to permit measurement of variation of wind pressure, and propeller engines situated at rear ends of ballast

摘要

The ship has a shell, and frame masts connected with each other on an upper part by a rail. Sails are firmly fixed to the shell, and form a cage using an upper crosspiece, where the sails have a solid structure. A lower motor is fixed on an upper plate of a disk to rotate a lower plate to cause rotation of a tinglette boom for rotating the sails. The sails are oriented to permit measurement of variation of pressure of the wind on the sails. Propeller engines are situated at rear ends of ballast.