In a crossing situation which vessel is required to maintain?

In a crossing situation, the vessel that has the other on its starboard side is required to give way. This means that if two power-driven vessels are crossing paths and one is to the right (starboard) of the other, the vessel on the left (port) must maintain its course and speed, while the vessel on the right must take action to avoid a collision. This rule helps to ensure safe navigation and prevent accidents at sea.