Search International and National Patent Collections

1. (WO2018218755) PLANING BOAT

Pub. No.:    WO/2018/218755    International Application No.:    PCT/CN2017/093662
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Fri Jul 21 01:59:59 CEST 2017
IPC: B63B 1/38
B63B 1/26
Applicants: GUANGZHOU SHIPYARD INTERNATIONAL COMPANY LIMITED
广船国际有限公司
Inventors: ZHANG, Rui
张瑞
Title: PLANING BOAT
Abstract:
Disclosed is a planing boat, comprising a hull (1), the bottom of the hull (1) being provided with several steps spaced apart in the length direction of the hull (1); each step has a first end close to the bow (2) and a second end close to the stern (3); for any two adjacent steps, the height of the second end of the step closer to the side of the bow (2) is greater than that of the first end of the step closer to the side of the stern (3). The planing boat has several steps spaced apart at the bottom of the hull (1), such that when the planing boat planes, every time water flows through a step, it will form a cavity behind the step and form a planing surface close to the second end of the step, such that the water would come into contact with the next step after a certain distance has been passed, and so on; the cavities can reduce the planing resistance of the planing boat to some extent, each planing surface has a small length, i.e. a high span-chord ratio, and therefore the planing resistance of the planing boat is reduced while the planing speed and the acceleration rate of the planing boat are increased.