Which vessel is typically designated as the stand-on vessel during an encounter?

Answer: B — Vessel with the right of way

In maritime navigation, the concept of the stand-on vessel refers to the party that is expected to maintain its course and speed in a crossing situation. The vessel that is designated as the stand-on vessel is typically the one that has the right of way in a given encounter. This designation helps to prevent collisions by clarifying responsibilities during potential conflicts at sea. When two vessels are approaching each other, the regulations under the Convention on the International Regulations for Preventing Collisions at Sea (COLREGs) specify which vessel should take action to avoid a collision. The vessel that has the right of way is expected to continue on its current path, while the other vessel must give way. This principle is vital for safe navigation and is essential for mariners to understand in order to operate safely. In contrast, the other options do not align with the principles set by the COLREGs. The overtaking vessel must take action to avoid the vessel being overtaken, and fishing vessels must adhere to specific navigation rules that may not grant them stand-on status in all circumstances. Therefore, the correct identification of the stand-on vessel as the one with the right of way is fundamental in maritime navigation to ensure safe and responsible vessel interactions.