If another boat signals or intention to pass you from the Stern what should you do?

If another boat signals its intention to pass you from the stern, you should maintain your course and speed to allow the overtaking vessel to pass safely. It's important to keep a lookout for the approaching boat and ensure that there is enough space for it to overtake without risk of collision. Additionally, avoid making any sudden maneuvers that could confuse the other vessel. Always follow the navigation rules and be prepared to communicate if necessary.