The five options are Caledonia Bridge, Firth of Forth Crossing, St Margaret's Crossing, Queensferry Crossing and Saltire Crossing.

BBC: New Forth bridge plans move ahead at Scottish parliament

Campania, a Clyde-built, Blue Riband-winning Cunard liner wrecked in the Firth of Forth just off Burntisland in 1918.

BBC: Drumbeg

On the Firth of Forth, says Northumbrian Water's Mr Spray, large populations of scaup, a diving duck, vanished after the effluent was cleaned up.

ECONOMIST: For some, sewage is pollution. For others, it's nutrition

The distinctive red cantilever bridge spans the Firth of Forth between the villages of South Queensferry and North Queensferry, and carries the railway line between Edinburgh and the north.

UNESCO: UK goes Forth at World Heritage Conference in Bonn

The aim of the bill is to grant Scottish ministers the necessary powers to construct a new road bridge over the Firth of Forth, adjacent to the existing Forth Road Bridge, along with new and upgraded connecting roads.

BBC: Forth Crossing Bill debate