What provision is made for sea chests for removal of solid debris restricting the entry grating into the sea chest of a machinery space sea water cooling system?

Correct Answer: Option B — The debris may be removed by blowing the sea chest clear with either compressed air or steam, as appropriate.

Sea chests are equipped with a blow-out connection to clear debris from the intake grating. By utilizing compressed air or steam, the engineer can create a reverse flow through the grating, effectively dislodging obstructions that restrict the flow of cooling water into the machinery space piping system.