本规范涵盖了Portsmouth粘合线轴型橡胶弹性支座系列，以及评估橡胶库存和完全组装支座的试验。这些支架主要用于水面舰艇和潜艇（如适用）。

This specification covers the Portsmouth bonded spool type series of rubber resilient mounts, together with tests for evaluating the rubber stock and the completely assembled mount. These mounts are primarily for use on surface ships and submarines, where applicable.