Data sources & attribution
Last updated: July 2026
KMS Vessel Tracker presents information from public maritime and mapping
sources. This page credits those sources and states the open licences the
data is used under.
Maps
- OpenStreetMap — street basemap. Map data
© OpenStreetMap contributors, used under the
Open Database License (ODbL).
- Kartverket (Norwegian Mapping Authority) — nautical chart layer,
© Kartverket, used under
CC BY 4.0.
Vessel & port information
- BarentsWatch — live AIS positions in Norwegian waters,
published under
NLOD 2.0.
Data delivered by BarentsWatch.
- Kystverket / ShipRep — pilotage schedules for Norwegian pilot districts.
- aisstream.io — supplementary global AIS coverage from a
community receiver network.
- UN/LOCODE — port names, codes and coordinates published by
UNECE,
supplemented for a few ports by the
NGA World Port Index
(a work of the U.S. Government, public domain).
Software
The map is rendered with Leaflet
— © 2010–2023 Vladimir Agafonkin, © 2010–2011 CloudMade, BSD-2-Clause licence.
Sign-in uses the Firebase JavaScript SDK (© Google, Apache-2.0).
Trademarks
BarentsWatch, Kystverket, OpenStreetMap and Kartverket are the marks of their
respective owners. They are named here solely to credit the origin of the data
shown in this service. Naming them does not imply any partnership with,
endorsement by, or approval from those organisations.
Questions about attribution:
support@kmsvesseltracker.no