The Coast Guard Navigation Center provides maritime navigation and information services that enhance the safety, security, and efficiency of U.S. waterways. read more ...

Boaters should normally use channels listed as Non-Commercial. Channel 16 is used for calling other stations or for distress alerting. Channel 13 should be used to contact a ship when there is danger of collision. read more ...

GPS permits land, sea, and airborne users to determine their three-dimensional position, velocity, and time 24 hours a day, in all weather, anywhere in the world with a precision and accuracy far better than other radio navigation systems available today or in the foreseeable future. read more ...

Picture a shipboard radar or an electronic chart display that includes a symbol for every significant ship within radio range, each as desired with a velocity vector (indicating speed and heading). read more ...

Local Notices to Mariners, Light List Summary of Corrections and Public Notice for Bridges for each U.S.C.G. District. read more ...