本规范涵盖海军舰艇用泵和送风机（鼓风机）的辅助机械驱动非冷凝式汽轮机和相关减速装置（如使用），并包括附加设备、配件和附件。不包括推进涡轮机和齿轮以及发电机涡轮机和齿轮。

This specification covers auxiliary mechanical drive non-condensing steam turbines and associated reduction gears (where used) for pumps and forced draft fans (blowers) for Naval ships and includes additional equipment, fittings and accessories. Propulsion turbines and gears and generator turbines and gears are not included.