Q4) describe the ballast control for semisubmersible rigs? (15 marks)

Ballast control system

Explanation:

The Ballast control systems are a vital part of the submersible rigs oil platforms, as it's made up of a network of pipes, valves, and pumps, and tanks which work as liquid control for keeping the temperature at a stable level as offshore drilling can extremely risky and environmental disasters can occur very often. Its is tied to the opposite side of the vessel to reduce the risk of a large chemical explosion, or counterbalance water in action.

answer; (wisconsin);

explanation: the badger state. this nickname originally referred to the lead miners, of the 1830s, who worked at the galena lead mines in illinois. these mines were in northwestern illinois close to the borders of wisconsin and iowa. the wisconsin miners lived, not in houses, but in temporary caves cut into the hillsides.