tonnage dues; tonnage tax
A tax levied on ships based on their tonnage, typically when entering a port.
Tonnage dues are imposed when foreign ships enter the port.
Standard modern spelling using the katakana トン for 'ton'.
Ateji spelling using the kanji 噸 for 'ton'; rarely used in modern texts.
Compound of トン (ton) and 税 (tax). The kanji spelling 噸税 uses the ateji 噸 for 'ton'.