This old Circle Line boat seems to be near the end of its life, with its name and Circle Line logos painted over. Hasn't appeared on tracking since February, but it is registered through April 2019, so maybe it will reappear.

USCG ID #: 514070
MMSI #: 367032310
Callsign: WY4524
Owner: Circle Line Sightseeing Yachts Inc, New York, NY
Hailing port: New York, NY
Length: 156.7 ft
Beam: 25.8 ft
Hull depth: 13.2 ft
Tonnage: 298 GT/203 NT
Builder: Marietta Manufacturing, Point Pleasant, WV
Year built: 1934
Former name: USCGC Nike (WPC-112)