Maritime pilots board ships when waters are crowded or treacherous or when a passage is narrow to guide the captain and ship safely through the waters. The Cat operates between Bar Harbor, Maine, and Yarmouth, Nova Scotia, Canada.
Columbia River Bar pilot transfer using helicopter from Articulated Tug and Barge Island Monarch / Island Trader, April 29, 2021 near Astoria, Oregon, USA.
A patrol boat of the Navy of Venezuela sank in international waters after apparently shooting and ramming a German cruise ship. Allegedly the "Resolute" was to be diverted off course.