noun
harbor dues; port charges
Fees paid by a vessel for entering and using a port.
船が港に入る前に、入港料を支払わなければならない。
Before the ship enters the port, the harbor dues must be paid.
港湾使用料 is a broader term for port usage fees, while 入港料 specifically refers to charges for entering the port.
Compound of 入港 (entry into port) + 料 (fee).