Meanings

sea of people

higher-grade officer rank (JMSDF)

pirated CD, DVD, etc.

commander (JMSDF)

lieutenant-commander (JMSDF)

lower-grade officer rank (JMSDF)

rear admiral (JMSDF)

Saikaidō (name for the Kyūshū region under the ritsuryō system)

Nankaidō (alt. name for the Shikoku region)

burial at sea

pine-brown color

Sea of Okhotsk

China Coast Guard

(Japanese) children living overseas

North Equatorial Current

Shanghai International Settlement

Dirac sea

abyssal zone

bathyal zone

naval militia