Caledonian MacBrayne — almost universally known as CalMac — is not a single long-distance ferry route but a dense network of mainland-to-island and island-to-island services. The operator describes itself as the largest ferry company in the United Kingdom, with 35 vessels serving more than 50 destinations across around 200 miles of Scotland’s west coast. For visitors, that means routes to famous islands such as Arran, Mull, Islay, Skye, Harris, Lewis, Barra and the Uists. For island communities, the same ferries carry commuters, schoolchildren, freight, food, tradespeople, medical travellers and the everyday traffic that keeps remote communities connected.