Station info - map view · info · telemetry · weather · raw · status · beacons · messages · bulletins · browse · moving · my account
Callsign, ship name or locator: Clear       
It is possible to search using wildcards (*?) after a prefix. Example: OH*
AIS vessel SEA C IV - show graphs
Callsign:
MMSI number: 338332746
Navigational status: Undefined/default (15)
Vessel class: Pleasure (37)
Location: 42°19.62' N 70°59.96' W - locator FN42MH08CL - show map
2.6 miles East bearing 100° from South Boston, Suffolk County, Massachusetts, United States [?]
3.8 miles Southeast bearing 125° from Boston, Suffolk County, Massachusetts, United States
5.0 miles West bearing 290° from Hull, Plymouth County, Massachusetts, United States
5.1 miles North bearing 2° from Quincy, Norfolk County, Massachusetts, United States
Last position: 2024-06-20 12:33:55 EDT (13h ago)
2024-06-20 12:33:55 EDT local time at South Boston, United States [?]
Course: 57.600002° – heading 511°
Speed: 26 MPH
Dimensions: length 15 m width 4 m draught 0.0 m
Last path: >ais via kx1t
Positions stored: 30
Stations near current position of SEA C IV - show more
callsign distance last heard - EDT      callsign distance last heard - EDT
BOSTON YACHT205.1 yards 80°2024-05-26 13:24:23 ASTRA MARE314.8 yards 117°2024-06-19 12:15:35
ONEIRO339.3 yards 255°2024-06-16 20:19:13 NAUTICAL TIME342.5 yards 42°2024-06-20 23:28:25
BABE371.3 yards 353°2024-06-19 13:11:30 367545490424.6 yards 27°2024-06-15 10:46:49
MEOW MEOW470.4 yards 116°2024-06-14 11:53:09 FOGGY DEW0.3 miles 97°2024-06-19 19:14:17
SIR_WINSTON0.4 miles 240°2024-06-15 19:23:58 GEZELLIG0.4 miles 248°2024-06-16 15:21:50
TRANQUILA0.4 miles 240°2024-05-31 12:20:40 TUNALICIOUS0.5 miles 352°2024-06-16 12:05:31
TRADITION0.5 miles 254°2024-06-01 15:16:28 DEFIANCE0.5 miles 247°2024-06-19 19:39:11
PERFECT ARRANGEMENT0.5 miles 240°2024-06-09 08:21:22 SERENDIPITY0.5 miles 140°2024-06-16 11:03:30
GHOST0.5 miles 350°2024-06-04 15:42:49 ALACRITY0.6 miles 342°2024-06-16 15:48:17
RUTH E HUGHES0.6 miles 144°2024-06-20 17:16:18 J.S. DE ELCANO0.6 miles 52°2024-06-09 18:08:21
About this site
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.
User guide · FAQ · Blog · Discussion group · Linking to aprs.fi · AIS sites · Service status · Database statistics · Advertising on aprs.fi · Technical details · API · Change log · Planned changes · Credits and thanks · Terms Of Service · iPhone/iPad APRS