Firth locally the change is held to be at the Tail of the Bank where the river crosses a sandbar off Greenock at the junction to the Gare Loch, or even further west at Gourock point. However, some firths are exceptions. The Cromarty Firth on the east coast of Scotland, for example, resembles a large loch with only a relatively small outlet to the sea and the Solway Firth and the Moray Firth are more like extremely large bays. The Pentland Firth is a strait rather than a bay or an inlet. These are connected to, or form part of, the
Firth of Clyde m wide and is operated by Northwestern Shiprepairers Limited using the name Scott Lithgow, although unrelated to the famous Port Glasgow Scott Lithgow shipbuilding company. The Firth of Clyde has one of the deepest sea entrance channels in northern Europe, which can accommodate the largest Capesize vessels afloat, and as such the Clyde is one of the UK's leading ports, handling some 7.5 million tonnes of cargo each year. Hunterston Terminal was constructed to bring in bulk ore, but now mainly deals with coal imports. Supertankers up to 324,000 tonnes travel up the firth to deliver crude oil to Finnart