Question 3438 Deck General

The correct answer is D) All of the above. Under the International Regulations for Preventing Collisions at Sea (COLREGS), also known as the International Rules of the Road, a "vessel" is defined as including every description of watercraft, including non-displacement craft and seaplanes, used or capable of being used as a means of transportation on water. This broad definition would encompass a semisubmersible drilling rig, whether drifting after breaking a tow line, under tow, or a jack-up rig under tow, as they are all considered vessels subject to the International Rules of the Road. The other options are incorrect because they do not accurately reflect the broad definition of a "vessel" under the COLREGS. All the scenarios described in the answer choices would be considered vessels and subject to the applicable navigation rules.