Abstract: In order to understand the applicability of the speed correction method of the ITTC 2021, the experimental requirements and correction process of the speed correction method of this method during the test of ship speed are introduced and compared with those of the ISO 15016∶2015. Speed correction programs for the two methods are developed through programming based on the principle of speed correction. The trail data of three typical ship types are then analyzed by using the two correction methods, summarizing the effects of the two correction methods on the correction results under different environmental factors such as wind, wave, tide, temperature, density, and water depth. The results show that the correction method of the ITTC 2021 is more reasonable than that of the ISO 15016∶2015. And the resulting speed corrected by the ITTC 2021 method is slightly higher than that by the ISO 15016:2015 correction method for these three ship types, while the newly added correction method for the added resistance in waves is the main factor causing the difference of the analysis results.

Key words: speed correction method, ITTC 2021, environmental factor, resistance correction

摘要： 为了解ITTC 2021航速修正方法的适用性,论文介绍了该方法在船舶测速过程中的试验要求和修正流程,并将该方法与ISO 15016∶2015方法进行了对比。结合航速修正原理,通过编程的方式开发了2种方法的实船航速修正程序,并选用3种典型船舶的试航数据,分别采用上述修正方法进行分析,总结了2种修正方法在不同风、波浪、潮流、温度、密度和水深等环境因素下对修正结果的影响。结果表明：ITTC 2021修正方法相对于ISO 15016∶2015方法更为合理,且针对研究的3种船型,ITTC 2021方法得到的航速略高于ISO 15016∶2015修正方法,而新增的波浪增阻修正方法是导致分析结果产生偏差的主要因素。

关键词: 航速修正方法, ITTC 2021, 环境因素, 阻力修正