Other websites for "bus times" that show the NL2 ferry service from Aberdeen to Lerwick say their data comes from the Traveline National Data Set (TNDS): https:

Other websites for "bus times" that show the NL2 ferry service from Aberdeen to Lerwick say their data comes from the Traveline National Data Set (TNDS): https://www.travelinedata.org.uk/ https://www.travelinedata.org.uk/ > TNDS contains public transport timetables for bus, light rail, tram and ferry services in Great Britain.