For sure, be careful sailing on the edge of the shipping channel in the lower Chesapeake. Sailing up from Florida
, I came up for my watch at 3am and my mate said, "just hold this course till (whatever)". Within minutes, before I even studied the gps
, I noticed I was on an intersecting course with a ship coming directly from port.
I immediately called the ship, gave my position, asked he could see me and he radioed back, "turn hard to starboard to buoy (whatever)". I thanked him.
My mate sailed us right into the middle of an intersecting channel. You have to watch for intersecting traffic.
We'd had tens of passages through that area but fatigue can sink a ship in short order.
I'll never forget it, and at night I always clip on my back up VHF radio
onto my pdf if i need to make a quick call. If a ship can hear that call, it may be too close.