According to the deployment, after the outbreak of the war, all attack submarines operating in the North Sunset Ocean immediately entered combat status.
That's right, they were to blockade the shipping routes of the North Sunset Ocean and attack the transport vessels traveling between the Gu Continent and the West Continent.
In large-scale warfare, submarine interdiction has always been the primary mission of submarines.
Despite the Empire's Navy having the strongest surface fleet in the world, with 15 large carriers and super carriers, many people overlooked that the Empire's Navy also had the strongest underwater fleet. The "Nanjing" class attack submarines had already built 40 units, with a planned number of 80. The next generation of even more advanced attack submarines had completed their design and were scheduled to begin construction within three years.
At any given time, the Empire's Navy had at least 72 attack submarines in service.
