When arriving at a navigation lock, what is the order of priority?

The order of priority when arriving at a navigation lock emphasizes the importance of commercial vessels and military craft due to their operational needs and potential schedule constraints. Military craft often have time-sensitive missions which necessitate their precedence in navigation situations. Following military vessels, commercial vessels are prioritized since they are typically involved in cargo transport and may have more stringent schedules. Fishing vessels also have a place in this hierarchy, but they are generally regarded as lower in priority compared to commercial operations. Lastly, pleasure craft, which are typically recreational and not time-sensitive, fall to the bottom of this hierarchy, allowing more critical vessels to navigate through locks first. Understanding this priority is crucial for maintaining safe and efficient navigation in busy waterway systems.