What is the primary communication channel for checking in with seaway during navigation?

The primary communication channel for checking in with the seaway during navigation is Channel 13. This channel is designated specifically for intership safety communications, and it serves as a crucial means for vessels to communicate with each other and with port authorities while navigating through congested or narrow waterway areas such as the seaway.

By using Channel 13, navigators can effectively manage their routes, alert other vessels to their positions, and ensure compliance with navigational safety protocols. This channel enables timely exchanges of critical information related to traffic conditions, navigational hazards, and emergency situations.

While other channels like 11, 15, and 17 are used for different purposes, they are not the primary channel for seaway communications, thereby highlighting the specialized role Channel 13 plays in navigation and maritime safety.