Which vessel is considered the give-way vessel in a crossing situation?

Answer: B — The vessel that sees a red light

In a crossing situation, the vessel that sees a red light is the give-way vessel. According to the COLREGs, when two sailing vessels are crossing paths, the vessel that has the other on its starboard side (the right side) must give way. The color of the lights plays a crucial role in determining the give-way and stand-on vessels. A red light signifies that the vessel is on the port side of the other vessel, and thus, the vessel seeing the red light recognizes that it is the obligation of the vessel with the green light (on the starboard side) to maintain its course and speed. This principle helps maintain safe navigation and prevent collisions between vessels in close proximity to each other. In this context, the other options do not apply correctly as criteria for determining the give-way vessel in a crossing situation. While the size of a vessel can impact maneuverability, it is not a primary factor in establishing right of way. Vessels overtaking must also give way, but this doesn't address the specifics of the crossing situation indicated in the question.