Question 4241 Deck General

The correct answer is C) 17. When deballasting from ballast tank 8S on the DEEP DRILLER, valve 17 on the starboard side needs to be opened. This is based on the typical valve arrangement and piping system on offshore drilling rigs, where the ballast tank valves are numbered sequentially, and valve 17 would be the corresponding valve for ballast tank 8S on the starboard side. The other options are incorrect because valve 7 would be associated with a different ballast tank, valve 8 would be the port-side valve for the same tank, and valve 18 would be the next sequential valve after the correct valve 17.