Thanks for that note. I use the OS for route planning as well. All good EXCEPT that you cannot upload the files to a Garmin Inreach device. So you have to accept the stock maps. I now have the OS MAPS and offline maps downloaded with routes downloaded too onto my iPhone. The Inreach for safety And paper map and compass as prime tools. The Inreach also does not support OS grid units so it is back to lay/long basics. Dara Ohuiginn Mallaig TGO starter this year.