总之，海军计划采购30艘新型潜艇使其有强大的水下作战能力。

In all, Navy plans to procure 30 new submarines to have formidable underwater fighting capabilities.

youdao

签订合同后，洛·马公司将为新一代潜艇开发整合先进的作战系统，并作为主承包商和系统集成商提供服务。

Following contract award, it would develop and integrate an advanced combat system for the new submarine class, serving as the prime contractor and systems integrator.

youdao

伊朗称Ghadir为隐形潜艇，难以通过声纳探测，目的在于浅水水域的沿岸作战，特别是在海湾地区。

Iran has described the Ghadir as stealth submarines, hardly detectable by sonar and aimed at coastal operations in shallow waters, notably in the Gulf.

youdao