Maritime powers repeatedly face linked problems of access, transport, logistics, and control of the sea. In this campaign, Japanese leaders largely treated ships as a means of maneuvering troops, while Korean naval doctrine supported fighting for control of coastal waters. That difference gave Korea a stronger war fleet even though hostile court politics often obstructed the admirals who sustained it. The comparison explains why an invasion fleet large enough to move an army could still be poorly equipped to defeat a purpose-built coastal navy.
Chapter · 1:46-4:12
Sea control versus maritime transport in the Imjin War
The opening frames the war as a clash between a Korean fleet built to contest local waters and a Japanese approach centered on moving armies by sea.