When are you allowed to depart from the US Coast Guard navigation rules?

You are allowed to depart from the US Coast Guard navigation rules in emergency situations where immediate action is necessary to avoid danger or to ensure safety. Additionally, vessels may deviate from the rules if they are required to do so by the circumstances of the situation, such as when a vessel is engaged in a search and rescue operation. However, any departure from the rules must be justified by the need to protect life or property. Always, the mariner should return to compliance with the navigation rules as soon as it is safe to do so.