中文摘要：

附体节能技术作为船舶节能技术中重要的一种，具有结构简单、效果显著等优点。本文对大/小舵球、推力鳍及舵球推力鳍进行桨后敞水试验和自航试验研究，试验结果表明，自航试验节能效果优于敞水试验效果，其中敞水试验推力鳍节能效果最佳达2.45%，自航试验小舵球鳍节能效果最佳达6.15%。

英文摘要：

As a kind of important energy-saving technologies, energy-saving appendages have the advantages of simple structure, significant effect, etc. This paper presents an experimental research on large/small rudder bubble, thrust fin and rudder bubble with thrust fin in both open water test and self-propulsion test. The results show that the effect of self-propulsion test is better than that of open water test. In open water test, thrust fin has the best result which reaches 2.45%of energy saving. In self-propulsion test, small rudder bubble with thrust fin has the best result which reaches 6.15%of energy saving.