Circumnavigation of Scarba and Lunga: a 47km day trip from Crinan, July 2010.The west coast of Lunga with Scarba and Jura beyond.Nearly finished, the tide still pushes us on from the Dorus Mor and the distant Corryvreckan and Scarba beyond.The tide times in the Corryvreckan are influenced by low pressure Atlantic systems and can be difficult to predict within an hour's accuracy. However, in a