Yes, he crossed the sound, before heading for Delaware. For a good read:

Gannon, Michael: Operation Drumbeat; Harper & Row

From Jan 14 to June 28, 1942, 43 tankers were sunk off the U.S. Eastern
Seaboard , by U-boats. In 1942 in the Gulf of Mexico, 99 tankers were sunk
by U-boats.

In total, from Dec 1941 through August 1942, (8 months) German U-Boats
carried out 184 patrols in American waters, sinking 609 ships (3,122,456
tons).

DSK wrote:
DD730 wrote:
You're wrong this time.

Meaning that Jax is almost right?

... On the 14th of January 1942 at 0448, for one. Just
off Montauk Point. Captain Hardegen of U-123 fired his first
torpedos, sinking the Norness, Captain Harold Hansen. Without
coastal charts, Captain Hardegen proceeded past Rockaway Beach and
into the Ambrose Channel. At 0140 on the 15th, while almost
aground on Long Beach, he sank the Coimbra, 422', carrying 80,000
barrels of oil. He was attacked the next day by bombers, but
escaped.

I appreciate the chance to learn more. But Montauk and the Ambrose
Channel isn't inside Long Island Sound, is it?

However, it turns out that right at the very end of the war, a U-boat
did enter LIS and was sunk by three US Navy vessels (Jax said it was
the USCG and that they bragged unjustifiably about it). I wonder of
this guy was planning on surrendering in Greenwich or Norwalk or,
maybe letting his crew skedaddle ashore and scuttling the boat.
Y'know begin a new life in a new country and all that? Couldn't blame
him is he was.

http://uboat.net/boats/u853.htm

This same U-boat had sunk a patrol boat off the coast of Maine a few
days earlier, and the U.S. Navy for decades insisted that it was due
to a boiler explosion.

Regards
Doug King