When two vessels are in a crossing a situation vessel that must maintain course and speed is referred to as what?

In a crossing situation, the vessel that must maintain its course and speed is referred to as the "stand-on vessel." This vessel is expected to continue its current path while the other vessel, known as the "give-way vessel," must take action to avoid a collision. The stand-on vessel has the right of way but may still take evasive action if a collision is imminent.