Trinity House Lighthouse Service - Responsible for operating and maintaining the country's lighthouses. Caledonian MacBrayne Ferries - Hebridean and Clyde ferry services. Company information, route information, and online booking. Her Majesty's Nautical Almanac Office - Produces the Astronomical Almanac, the Nautical Almanac, Astronomical Phenomena, the Star Almanac and the UK Air Almanac. Marine Accident Investigation Branch - Provides information on the work of the MAIB, which is responsible for investigating all types of marine accidents, both to ships and to people on board them. UK maritime sector policies - Information from the UK Department for Transport on maritime regulation and safety matters. Maritime and Coastguard Agency - Information on maritime matters, Merchant Shipping Notices, Marine Guidance Notes and Marine Information Notes.