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 KOHO MARU NO.21 - show graphs
Callsign: JJ4046
MMSI number: 431501745
IMO number: 268021
Navigational status: Under way (engine) (0)
Vessel class: Tanker (80)
Destination: >JP URAYASU OFF (ETA May28 00:00)
Location: 34°31.89' N 137°33.73' E - locator PM84SM77LN - show map
13.0 miles South bearing 172° from Kosai-shi, Shizuoka, Japan [?]
15.2 miles Southwest bearing 220° from Hamamatsu, Shizuoka, Japan
55.8 miles Southwest bearing 237° from Shizuoka-shi, Shizuoka, Japan
58.3 miles Southeast bearing 140° from Nagoya-shi, Aichi, Japan
Last position: 2024-05-26 23:07:11 EDT (7d 2h51m ago)
2024-05-27 12:07:11 JST local time at Kosai-shi, Japan [?]
Course: 89° – heading 89°
Speed: 15 MPH
Dimensions: length 72 m width 12 m draught 4.4 m
Last path: JJ4046>ais via _supersuzy
Positions stored: 17021
Stations near current position of KOHO MARU NO.21 - show more
callsign distance last heard - EDT      callsign distance last heard - EDT
DAI3KOSEI289.1 yards 266°2024-05-25 01:41:55 HAKUHOUMARU366.1 yards 28°2024-05-31 14:14:41
KEIWA MARU392.4 yards 4°2024-05-29 13:43:15 ERIERU 2434.5 yards 217°2024-05-31 11:25:20
MIKITOYO443.5 yards 21°2024-06-01 02:09:01 KAKURYU MARU0.4 miles 346°2024-05-24 14:49:41
ASAHI MARU0.4 miles 29°2024-05-19 09:39:20 JIN SHUN0.5 miles 23°2024-05-11 10:59:10
NANIWA MARU NO.70.6 miles 276°2024-06-02 12:20:57 TURUHIROMARU0.6 miles 342°2024-05-31 04:26:34
NAGATO MARU0.6 miles 301°2024-05-29 02:40:03 MATSU MARU NO,120.7 miles 302°2024-05-31 14:55:45
NO88 TO YO MARU0.8 miles 356°2024-06-02 03:38:55 MISAKIMARU0.8 miles 126°2024-05-29 12:49:09
KEIYO MARU0.9 miles 304°2024-05-30 12:32:47 AKATSUKI0.9 miles 173°2024-06-01 08:37:44
MEIOU MARU0.9 miles 336°2024-06-02 05:27:07 HISATSU MARU1.2 miles 250°2024-05-29 09:15:46
MASUEI MARU1.2 miles 338°2024-05-26 04:57:03 SHOEI MARU1.2 miles 326°2024-06-01 04:41:18
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