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
Mark Firth Mark Firth Mark Firth (25 April 1819 – 28 November 1880) was an English industrialist and philanthropist. Firth was born in Sheffield, the son of Thomas Firth (1789–1850), of Pontefract, York, and Mary Loxley. He joined the crucible steel works of Sanderson Brothers where his father worked as head smelter, but left in 1842 to set up his own business with his brother, Thomas Jr. Their father joined them shortly afterwards, and in 1852 Thomas Firth & Sons had expanded into larger premises at the Norfolk Works in Savile Street, which had the largest rolling mill in Sheffield. The Firth's