Most are buoys or fixed metal ... Some, such as day markers, are decidedly low-tech. They are just reflective boards that may include the red square to mark the starboard side of a channel or ...

Appalachian Power Co. is installing new channel markers at ... and temporary buoys will comply with U.S. Coast Guard standards, according to Porter. They will be a square or triangle with the ...

Stuck emphasized that technology will never fully replace physical markers. The vast majority of buoys that the Coast Guard maintains are considered critically important and “never going ...