2万吨级超浅吃水肥大船试验研究

超浅吃水肥大型运煤船研制是“八．五”国家重大技术装备项目，其中２万吨级超浅吃水肥大型运煤船是规划中秦岛至上海航行不须等潮进江的主要经济船型，是为我国首制Ｂ／Ｔ＝４．０，ＣＢ＝０．８３９的散货船。

A Test Investigation on the Extremely Shallow Draft Full Ship Form

The construction of full form coal ships with extremely shallow draft is one of the heavy technique equipment projects in the sib national five-year economical development plan.The 20k DWT coal ship is one economical type of the ships mensioned above for the Qinhuangdao-Shanghai route.The investigation on such extremely shallow draft full ship form is rarely seen both at home and abroad.On the basis of sucessful development of the 35k DWT shallow draft coal ship of full form,the author developed further a new ship form with B/T=4.0 having very good powering performance.The investigation included comparative resistance and propulsion tests with 3 different fore--body and 4 different aft-body lines and 3 wake survey tests at the propeller disk.The lines proposed is adopted by the owner and the ship yard.Now the ship is under construction. This investigation is also valuable for reference for the design of other shallow draft coal ships.