Regarding anti-submarine escort operations, the Newland Navy and Bulan Royal Navy had long mastered the ropes.
The key, in fact, was the escort aircraft carriers.
In anti-submarine warfare focused on escort carriers as the core strength, the goal was not to sink submarines, but to drive them away, preventing them from getting close to the convoy.
Here, they mainly relied on carrier-based patrol aircraft.
Typically, escort carriers would extend the anti-submarine search range to over 300 kilometers during the day, and even up to 500 kilometers ahead of the convoy's course, in an effort to increase patrol density, especially in the 60-degree maritime area on both sides of the course ahead, deterring nearby submarines from daring to approach by day.
Come nightfall, even if submarines chased at full speed on the surface, they might not be able to catch up with the transport convoy.
