Baltimore Canyon is an underwater canyon along the continental shelf.
There are a number of Canyons. Hudson Canyon, Washington, Norfolk.
These are often prime fishing grounds
If you go to google earth and type in " Baltimore Canyon" it will bring you there. It's roughly 70 nm southeast of the entrance to the delaware bay.
The Hague line is the line that divides the economic zone waters of Canada and the U.S.
The NOAA weather report is the offshore forecast between these two lines.
South of 1000 fathoms...are the waters off the shelf of the hague line
And yes it looks pretty nasty out there right now