Your semisubmersible drilling unit is moored on station and is experiencing winds from the north. What will be the effect if you increase the length of the anchor chains you have deployed to the north?

Correct Answer: Option D — It will increase the holding power of those chains.

Deploying additional anchor chain increases catenary length, which provides greater deadweight on the bottom and a more horizontal pull angle at the anchor, thereby substantially increasing the total holding power of the mooring system.