For a floating MODU, the center of buoyancy and the metacenter are in the line of action of the buoyant force __________.

Correct Answer: Option D — at all times

Under MARPOL, SOLAS, and USCG Marine Engineering Safety regulations, regarding 'For a floating MODU, the center of buoyancy and the metacenter are in the line of action of the buoyant force', the mandated standard is: 'at all times'.