If your vessel has a GM of one foot and a breadth of 50 feet, what is your vessel's estimated rolling period?

Correct Answer: Option B — 22 seconds

Using the empirical roll period formula T = (0.35 * B) / sqrt(GM), a beam of 50 feet and a GM of 1 foot gives T = 17.5 / 1, which calculates to an estimated rolling period of 22 seconds.