Firth of Tay
The Firth of Tay (Scottish Gaelic: Linne Tatha) is a firth in Scotland between the council areas of Fife, Perth and Kinross, the City of Dundee and Angus, into which Scotland's largest river in terms of flow, the River Tay empties. The firth has a maximum width of at Invergowrie.
Firth of Clyde
The Firth encompasses many islands and peninsulas and has twelve ferry routes connecting them to the mainland and each other. Sometimes called the Clyde Waters, this water body is customarily considered an element of the Irish Sea. The ferry services are run by Caledonian MacBrayne and by Western Ferries and many of the routes are lifeline services for communities living in remote areas. A great number of sea lochs adjoin the Firth, the largest being Loch Fyne.