船舶压载吃水估算方法探讨

Discussion on calculation methods about ship ballast draught

船舶压载吃水计算是个极其复杂的问题,在港口工程中尚无完善的计算方法,现行规范和相关标准的船型资料中亦未提及。而这一参数在压载工况下的系泊船舶作用力计算、登船梯包络线设计等工作中是非常必要的。根据现有相关理论与成果,对船舶压载吃水估算方法进行探讨,分析研究了国内外几种船舶压载吃水计算的方法特点,并应用油船算例进行计算结果间的对比分析,提出了不同吨级油船压载吃水的估算方法,并提出相关建议和未来研究方向,为港口工程船舶压载吃水计算研究提供参考。

The calculation of ship ballast draught is much complex and has no excellent methods for port engineering, is not referred to ship data in current criterions and relevant specifications. Ship ballast draught is very critical for professional work such as acting force computation of berthing ship and envelope curve design of boarding ladder. The ship ballast draught is researched according to relevant theories and achievements. The characteristics of domestic ＆ abroad calculation methods about ship ballast draught are analyzed. And the differences of calculation results from several methods are compared by an example on oil tankers. The calculation methods about tankers＂ ballast draught are proposed and some suggestions and research plan are presented, which provides a reference for ship ballast draught in port engineering.