The Imagawa family controls three excellent ports: Shimizu Port, Qingshui Port, and Paoquan Port.
The first two are located in Jumogawa Province, while the last is in Tone Province, but both Qingshui Port and Paoquan Port sit inside Qingshui Bay, much like Shimazu Port and Atsuta Port, each holding one end of the bay.
After Harano led his fleet out of Chenjin in Sankei Province, it was natural that he first arrived at Paoquan in the northwest corner of Tone Province.
The Imagawa family also places great importance on its ports. Just like Oda Nobunaga, they collect high "customs ship fees" to maintain their army, so naturally, a large port like Paoquan is tightly guarded: not only have they built many beacon towers and rock fortresses, but naval units are also stationed there.