A qualified person must be assigned as the second in command of a lifeboat on a MODU if the lifeboat has a capacity of more than __________.

Correct Answer: Option C — 40 persons

Title 46 CFR lifesaving equipment regulations require that a qualified person holding a lifeboatman certificate be assigned as the second in command of any survival craft or lifeboat designed with a total capacity exceeding 40 persons to ensure effective crowd control and safe operation.