https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse English Map of US marinehighway routes as of June 2020 applies
under the Creative Commons Attribution-Share Alike 2.0 Generic license. Attribution: MarineHighway by Mick Garratt You are free: to share – to copy, distribute
under the Creative Commons Attribution-Share Alike 2.0 Generic license. Attribution: MarineHighway, Carrickfergus by Stephen McKay You are free: to share
under the Creative Commons Attribution-Share Alike 2.0 Generic license. Attribution: MarineHighway, Carrickfergus by David Dixon You are free: to share
the Creative Commons Attribution-Share Alike 2.0 Generic license. Attribution: Carrickfergus MarineHighway by David Dixon You are free: to share – to copy