基于2008年完整稳性规则的水尺计重及其误差研究

Study on the Draft Survey and Error Correction Based on 2008 IS Rules

摘要: 当船舶存在纵倾时，其平均吃水即等容吃水不在船中，应对此予以纵倾修正。《2008年IS规则》提出在校核船舶稳性时需考虑船舶纵倾的影响，即船舶静水力资料里应包括在不同吃水差下的静水力数值。此项改变可以应用于水尺计重的纵倾修正环节，来简化纵倾修正，降低因船舶纵倾导致的水尺计重误差。本文从船舶静力学角度分析了因船舶纵倾而导致的水尺计重误差，提出了一种基于《2008年IS规则》的水尺计重计算方法，该方法计算简单，操作方便，有效降低了水尺计重的误差。

Abstract: The mean draft which is equal to the equivalent draft of the ship with trimming is not in the middle ship, so a trim correction should be made. According to the “2008 IS Rules”, the effect of the ship trim should be taken into consideration when checking the ship stability that the hy-drostatic value of the ship in different trim of draft should be included in the hydrostatic data of the ship. This change can be applied to the trim correction of the draft survey to simplify the trim correction and reduce the error of the draft survey due to the ship trim. This article ana-lyzed the error of draft survey caused by ship trim from the perspective of ship statics, and pre-sented a new method for calculating the draft survey based on the “2008 IS Rules”. The method has the advantages of simple computation, easy implementation and effectively reducing the draft survey error.