dredging operations; dredging work
Technical term for the work of removing sediment and debris from the bottom of bodies of water, typically to maintain or deepen navigation channels.
Dredging operations at the port are scheduled to begin next month.
The river's depth was secured through dredging work.
Compound of 浚渫 (dredging) and 作業 (work, operations). The exact historical derivation is uncertain, but the kanji are conventionally associated with dredging and work respectively.