OS Landranger map 7 shows the southern part of Orkney, including Hoy, South Ronaldsay, the Island of Stroma, Flotta, & South Walls, as well as Scapa Flow & the Pentland Firth. Scapa flow has been used as a harbour for as long as people have been using the sea. The wrecks of the German fleet, along with other older vessels make this one of the most popular spots in the world for wreck diving. With this map you will receive a code for use on your i OS or Android smartphone or tablet. Find our more at Mobile Download FAQ. The OS Landranger map for Orkney is available in both the standard paper version & weatherproof " Active" version.