Callsign:	PB4939
MMSI number:	244660862
IMO number:	145645
Navigational status:	Under way (engine) (0)
Vessel class:	Tanker (89)
Destination:	1E MERWEDEHAVEN (ETA Mar14 14:00)
Location:	51°55.96' N 4°13.12' E - locator JO21CW63FU - show map - static map 5.4 miles West bearing 285° from Vlaardingen, Gemeente Vlaardingen, South Holland, Netherlands [?] 7.7 miles Northwest bearing 322° from Spijkenisse, Gemeente Spijkenisse, South Holland, Netherlands 41.7 miles Southwest bearing 223° from Amsterdam, Gemeente Amsterdam, North Holland, Netherlands 74.9 miles North bearing 356° from Brussels, (Bruxelles-Capitale), Brussels Capital Region, Belgium
Last position:	2021-04-20 05:11:29 EDT (1h55m ago) 2021-04-20 11:11:29 CEST local time at Vlaardingen, Netherlands [?]
Course:	304.2° – heading 511°
Speed:	13 MPH
Dimensions:	length 148 m width 23 m draught 1.8 m
Last path:	PB4939>ais via GM7HHB
Positions stored:	3515

callsign		distance	last heard - EDT		callsign		distance	last heard - EDT
CHRISTIAN ESSBERGER		172.3 yards 300°	2021-04-12 03:48:29		VOLHARDING 9		210.4 yards 118°	2021-04-19 20:39:16
STAVFJORD		274.1 yards 260°	2021-04-18 15:16:30		CRIGEE		458.8 yards 169°	2021-04-16 13:54:11
SOUTH CAROLINA		489.4 yards 166°	2021-04-16 23:00:23		PD5JOS B		0.3 miles 87°	2021-04-17 15:10:01
PD5JOS-B		0.3 miles 87°	2021-04-17 15:10:01		PD5JOS		0.4 miles 87°	2021-04-20 06:47:16
DUZGIT HARMONY		0.4 miles 287°	2021-04-20 06:36:31		MANTYRANO		0.5 miles 290°	2021-04-17 16:17:03
PENGALIA		0.5 miles 143°	2021-04-18 13:09:26		IDA		0.5 miles 134°	2021-04-20 05:17:30
MELAS		0.5 miles 136°	2021-04-16 12:17:20		LARS		0.6 miles 305°	2021-04-18 00:32:03
BYLGIA		0.6 miles 213°	2021-04-13 09:46:17		THIALF		0.6 miles 208°	2021-04-12 16:30:43
KRVE 31		0.7 miles 248°	2021-04-16 21:17:21		PE1CHR-9		0.7 miles 37°	2021-04-13 05:21:56
FAIRPLAY XI		0.7 miles 185°	2021-04-20 06:09:31		PANDA		0.7 miles 305°	2021-04-07 20:30:44

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.