MANDATORY SHIP REPORTING SYSTEM SOUNDREP OPERATED BY
SOUND VTS

Ships with a gross tonnage of 300 and over shall report to SOUNDREP when passing reporting lines or prior to departure from a port or an anchorage within the SOUNDREP area.
Reporting to SOUNDREP can be done using proper and updated AIS information, by online reporting form on www.soundvts.org, by email to contact@soundvts.org or VHF.
For further information see the Mariners' Routeing Guide Baltic Sea (INT 1200) and the publication UKHO NP286 (2), ALRS, Volume 6 Part 2 - Pilot Services, Vessel Traffic Services and Port Operations. See also IMO Resolution MSC.314 (88), the IMO publication Ships' Routeing and www.soundvts.org.
The SOUNDREP area is divided into two sectors at latitude 55°50'N. Calls to Sound VTS, callsign "Sound Traffic", shall be made on VHF channel 73 in sector 1 and channel 71 in sector 2. Passing of the sector dividing line shall not be reported.
Ships in the SOUNDREP area are required to listen to the sector VHF channel and  VHF channel 16.
Before passage of the Drogden channel, all ships, including ships with a tow or with an air draught exceeding 35 metres, must report when passing the reporting lines or prior to departure from a port or an anchorage within the SOUNDREP area. Reporting shall be done on VHF to Sound VTS, and must state the expected time (UTC) of passage of both Nordre Røse lighthouse and light buoy No. 9 in the channel.