Callsign:
MMSI number:	338926941
Navigational status:	Under way (engine) (0)
Vessel class:	Law enforcement (55)
Location:	42°22.16' N 71°03.08' W - locator FN42LI38UO - show map 0.9 miles Northeast bearing 30° from Boston, Suffolk County, Massachusetts, United States [?] 1.8 miles Southwest bearing 211° from Chelsea, Suffolk County, Massachusetts, United States 2.5 miles North bearing 358° from South Boston, Suffolk County, Massachusetts, United States
Last position:	2024-11-21 11:29:43 EST (8d 18h23m ago) 2024-11-21 11:29:43 EST local time at Boston, United States [?]
Course:	360° – heading 511°
Speed:	0 MPH
Dimensions:	length 8 m width 3 m draught 0.7 m
Last path:	>ais via kx1t
Positions stored:	56

callsign		distance	last heard - EST		callsign		distance	last heard - EST
CGC WILLIAM CHADWICK		22.7 yards 216°	2024-11-27 23:00:03		CGC MAURICE JESTER		51.3 yards 157°	2024-11-27 13:40:55
26348		80.5 yards 121°	2024-11-18 10:49:06		CGC JOHN PATTERSON		89.8 yards 142°	2024-11-19 13:17:41
PISCES		96.7 yards 280°	2024-11-30 05:51:44		CGC WARREN DEYAMPERT		97.6 yards 185°	2024-11-30 05:52:45
CG26347		107.8 yards 156°	2024-11-21 14:12:33		CGC WILLIAM SPARLING		120.2 yards 172°	2024-11-30 05:53:15
CG29181		134.2 yards 192°	2024-11-27 07:46:44		CG 22347		140.5 yards 136°	2024-11-20 07:34:00
CG26301		143.0 yards 199°	2024-11-06 10:59:21		CG OAK		144.0 yards 141°	2024-11-30 05:49:12
CG 26342		154.5 yards 199°	2024-11-25 09:37:41		CG26226		160.9 yards 208°	2024-11-07 09:02:46
S V ANDRETH		172.7 yards 14°	2024-11-20 19:54:47		CG26143		176.2 yards 187°	2024-11-26 13:23:49
CG45637		214.3 yards 173°	2024-11-21 10:38:29		CG49418		218.9 yards 169°	2024-11-30 05:53:15
FATHER DAN		317.1 yards 153°	2024-11-29 14:00:29		JOHN S. DAMRELL		338.0 yards 148°	2024-11-29 15:32:08

This page shows real-time information collected from the Automatic Position Reporting System Internet network (APRS-IS). APRS is used by amateur (ham) radio operators to transmit real-time position information, weather data, telemetry and messages over the radio. A vehicle equipped with a GPS receiver, a VHF transmitter or HF transceiver and a small computer device called a tracker transmits it's location, speed and course in a small data packet, which is then received by a nearby iGate receiving site which forwards the packet on the Internet. Systems connected to the Internet can send information on the APRS-IS without a radio transmitter, or collect and display information transmitted anywhere in the world.