Forum:Announcements/Rules of the sea - shipping lines
OpenGeofiction:Rules of the sea has been updated to remove shipping lines. These shipping lines should no longer be mapped. Instead the route=ferry tag should be used as documented in the 
OpenStreetMap guidelines:
"This tag is used on ways way, which maps a ferry or water bus route on the sea, rivers, or other waterways. Ferries are a form of public transport that operate to connect road networks and to provide passenger service much like bus service. Some ferry systems consist of many routes, while others only provide a convenient means to visit an island or cross a river or lake. route=ferry can be used for large ferries carrying passengers, bicycles, cars, trucks and even rail cars, as well as for small boats ferrying people over rivers and lakes or self-operated ferries"