Callsign:	JD4117
MMSI number:	431008916
Navigational status:	Under way (engine) (0)
Vessel class:	Tug (52)
Destination:	>JP YOK Y (ETA Dec03 08:00)
Location:	35°26.90' N 139°39.78' E - locator PM95TK97NO - show map - static map 1.2 miles East bearing 88° from Yokohama-shi, Kanagawa, Japan [?] 5.8 miles Southwest bearing 211° from Kawasaki, Kanagawa, Japan 16.7 miles South bearing 186° from Tokyo, Tōkyō, Japan
Last position:	2021-01-21 13:32:58 CST (1h34m ago) 2021-01-22 04:32:58 JST local time at Yokohama-shi, Japan [?]
Course:	135.1° – heading 306°
Speed:	0 MPH
Dimensions:	length 37 m width 10 m draught 3.0 m
Last path:	JD4117>ais via GM7HHB
Positions stored:	25385

callsign		distance	last heard - CST		callsign		distance	last heard - CST
KATASE MARU		24.3 yards 0°	2021-01-21 12:25:48		426814612		56.6 yards 351°	2021-01-10 15:14:38
GINGA		85.1 yards 0°	2021-01-21 13:15:58		KIYOSUMI		105.5 yards 250°	2021-01-21 13:16:58
KUROBE MARU		110.3 yards 244°	2021-01-21 13:50:59		YAMAGATA MARU		123.0 yards 234°	2021-01-21 14:33:01
HAKUBA		138.8 yards 314°	2021-01-21 14:51:01		YUMIHARI		198.0 yards 270°	2021-01-21 00:23:26
HOTAKA		203.9 yards 284°	2021-01-21 11:19:57		OHGI MARU		203.9 yards 256°	2021-01-21 13:30:58
431006372 JP		243.3 yards 260°	2020-12-30 00:18:58		LEO		275.8 yards 165°	2021-01-19 23:02:32
364220894 TC		354.5 yards 100°	2021-01-18 17:37:00		AWAJI MARU		361.8 yards 305°	2021-01-21 15:06:02
SEIYO MARU		377.1 yards 304°	2021-01-04 09:24:58		NISHIKI		380.6 yards 291°	2021-01-21 15:01:14
DAIAN		397.7 yards 275°	2021-01-21 13:36:58		431008589 JP		399.3 yards 283°	2021-01-02 18:00:14
CHITOSE		407.7 yards 284°	2021-01-21 14:51:01		HIKARIMARU NO.17		0.4 miles 309°	2021-01-16 03:36:32

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.