noun
ocean conditions; sea state
Technical term used in oceanography, marine weather reports, and fisheries to describe the physical state of the sea (waves, currents, temperature, etc.).
今日の海況は穏やかで、波も低い。
Today's ocean conditions are calm, and the waves are low.
漁師は出港前に海況を確認する。
Fishermen check the sea state before leaving port.