UPDATE (11:15 a.m.) - The vessel that had sunk in Cape Vincent is now above water. The "tug" was a small workboat pushing a barge owned by TIMIS.
Photos from the scene can be found here.
ORIGINAL REPORT - A tug has reportedly sunk in Cape Vincent. Fuel may be leaking according to a Newjunky post. This is not in the shipping channel and not interfering with ship traffic. It is however near the ferry dock and service is suspended at this time.