Submarines lose some of their superiority in the relatively shallow Taiwan Straits, where sea trenches are not wide enough for use, and military experts believe there can be at the most only thirteen mainland submarines deployed around Taiwan, to the north, east, south and southwest where the waters are deeper.
雖然因為台灣海峽水深較淺，海溝也不夠寬，讓潛艇的優勢打了折扣，軍事專家認為，中共最多只能在台灣西南、南、北與東部地勢較深的海域部署十三艘潛艇。