An attempt at analysis...

This diagram is an attempt to analyse different ideas which flow from photographs of moving boats. A travelling boat can have positive or negative aspects, depending entirely on one's standpoint.  A CalMac ferry plying the coast is generally a harbinger of positive feelings: holidays, visits, going home (unless, of course, the sea is rough and stormy...).  The small ferries plying the channels between Oban and Kerrera or Ellenbeich and Easdale island seem to emphasise the distance and separation between points which are geographically close, but separated by a stretch of water.  Any journey brings change, albeit it temporary.  A lifeboat is a reminder of the power of the sea and the heroism of those who venture forth in conditions where the sea is displaying its might. Historically, the sea has been the maritime motorway for Western Scotland, and scene of most of the pre-1745 battles and power struggles. Indeed, the sea was really the only route for trade, invasion, foraging, nomadic migration, or even finding an unrelated marriage partner, until General Wade arrived in Scotland in 1726 and started to build inland roads.  Even then, the West of Scotland was largely unaffected and the sea remains pre-eminent for many rural and island communities.