World War II Naval Defences of the Forth

As in WWI the there were several defensive lines of gun batteries, minefields and nets.

While many existing sites were reused, a new outer line was created stretching across the mouth of the Forth from Crail to Dunbar

1942 outer line of defence in the Firth of Forth

The WWI middle line became the WWII inner line with no naval defences at Queensferry.

1942 inner lines of defence in the Firth of Forth