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 WHITE KNUCKLES - show graphs
Callsign: 8SY4148
MMSI number: 265715820
Navigational status: Undefined/default (15)
Vessel class: Pleasure (37)
Location: 59°04.88' N 18°16.54' E - locator JO99DB39CM - show map
5.8 miles Southwest bearing 232° from Dalarö, Stockholm, Sweden [?]
7.6 miles Southeast bearing 142° from Haninge, Haninge Kommun, Stockholm, Sweden
18.9 miles Southeast bearing 157° from Stockholm, Stockholms Kommun, Stockholm, Sweden
58.0 miles Southeast bearing 157° from Uppsala, Uppsala Kommun, Uppsala, Sweden
Last position: 2023-06-25 08:39:44 EDT (320d 14h41m ago)
2023-06-25 14:39:44 CEST local time at Dalarö, Sweden [?]
Course: 305° – heading 511°
Speed: 2 MPH
Dimensions: length 12 m width 3 m draught 0.0 m
Last path: 8SY4148>ais via SM1UBB
Positions stored: 1095
Stations near current position of WHITE KNUCKLES - show more
callsign distance last heard - EDT      callsign distance last heard - EDT
SM0IKR2.9 miles 303°2024-05-10 06:15:57 SK0QO-22.9 miles 300°2024-04-24 12:47:53
SM0NUE-92.9 miles 336°2024-05-10 14:35:53 SILVERPILEN3.5 miles 220°2024-05-05 09:49:10
WAXHOLM 13.6 miles 271°2024-05-10 21:00:15 PER JONSSON4.5 miles 192°2024-05-09 03:58:14
HMS TROSSO4.6 miles 255°2024-05-07 05:36:12 HMS 7554.9 miles 263°2024-04-14 15:36:05
ORNO KURIR4.9 miles 84°2024-05-04 20:37:06 EBBA5.0 miles 83°2024-05-10 21:39:15
RESCUE R BERGMAN5.0 miles 60°2024-05-05 09:51:10 VENDELA5.8 miles 54°2024-05-07 18:02:12
SM0SCB-26.0 miles 331°2024-05-10 23:18:05 VINDBADAN6.2 miles 55°2024-05-05 07:35:10
SM0XDQ6.4 miles 290°2024-04-14 16:51:34 SM0XDQ-76.4 miles 290°2024-04-22 15:17:40
RENSKAR6.6 miles 177°2024-05-10 07:10:15 SM0NHL-i6.7 miles 312°2024-04-29 08:16:35
SM0TXD-16.7 miles 315°2024-04-22 11:46:42 SM0TXD-76.7 miles 315°2024-04-13 06:46:12
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