Which type of vessel cannot be impeded in passage?

The cargo vessel is the correct answer because it typically has a right of way under the International Regulations for Preventing Collisions at Sea (COLREGs). The regulations prioritize the safe and efficient movement of commercial shipping, which includes cargo vessels. These vessels often carry important and sometimes hazardous goods, and any impediment in their passage can lead to significant delays, potential safety hazards, and economic impacts.

While other types of vessels, such as recreational vessels, towing vessels, and sailing vessels, may have their own rules regarding right of way in certain situations, cargo vessels have a higher duty to maintain their course and speed. This is particularly true in busy shipping lanes or restricted waters where cargo vessels must navigate safely and efficiently to minimize disruptions to shipping traffic. Thus, understanding the marine traffic rules emphasizes the importance of ensuring that cargo vessels can operate without undue hindrance.