载人潜水器在水下遇到紧急情况无法正常上浮时，应急浮标作为最后一道保障，建立起了载人潜水器与海面救援船舶之间的连接，为后续救援提供位置指示和一根救援用的牵引缆绳，其设计的合理性与有效性尤为关键。本文建立了应急浮标救援系统缆绳数学模型，以全海深载人潜水器为研究对象，对载人潜水器应急浮标救援系统在不同工况下的缆形及张力分布进行了计算分析，得出了不同深度释放应急浮标、不同浮标净浮力及不同缆径下缆形及张力的变化规律，可为载人潜水器的设计提供参考。

When a manned submersible fails to surface in an emergency, the emergency buoy acts as the final safeguard, establishing a connection between the submersible and the rescue vessel on the surface, providing both position indication and a tow line for subsequent rescue operations. The rationality and effectiveness of the emergency buoy design are particularly critical. In this paper, a mathematical model of the cable of emergency buoy rescue system is established, and the cable shape and tension distribution of the emergency buoy rescue system of manned submersible under different working conditions are calculated and analyzed. The variation patterns of cable shape and tension are obtained for different deployment depths of the emergency buoy, different net buoyancies, and different cable diameters. This study can provide a reference for the design of manned submersibles.