Question 1819 Deck General

The correct answer is C) at all times when underway unless operating on protected or partially protected waters. This is because the regulations for small passenger vessels require that loading doors must be closed, watertight, and secured at all times when the vessel is underway, unless the vessel is operating in protected or partially protected waters where the risk of swamping or flooding is low. Leaving the doors open at any time when underway on open waters could pose a serious safety risk if the vessel encounters waves or other conditions that could cause water to enter through the open doors. The other answer choices are incorrect because they either do not cover the full requirement (A and D) or are too broad (B).