Clyde Naval Base is a NATO British Naval submarine base. It is located at Faslane on the Gare Loch in Scotland. (SG1: "Exile")
Alternate timeline[]
In an alternate timeline, where the Tau'ri's allies abandoned them due to Harold Maybourne and the Rogue NID stealing from them, Earth was no longer a part of the Protected Planets Treaty and was devastated by the Goa'uld in the year 2000. General George S. Hammond told David Dixon to take Earth's Beta Gate somewhere remote. He took it to Clyde Naval Base. (SG1: "Exile")