RNAD Coulport, Naval armaments depot in Argyll and Bute, Scotland.
RNAD Coulport is a naval weapons storage facility in Argyll and Bute, Scotland, built with sixteen concrete bunkers embedded into a ridge along Loch Long. Two jetties provide access for submarines to approach the site for loading and unloading operations.
Construction started in 1963 as the Cold War-era nuclear deterrent program expanded, with initial design focused on Polaris missiles. The site was later adapted to accommodate Trident systems as Britain's military strategy evolved through the following decades.
The site functions as a working facility deeply embedded in British defense operations, where specialized personnel carry out their tasks under strict security protocols that shape daily routines. Its remote Scottish waterside location reflects the importance of secrecy to this type of installation.
The site is not open to visitors and is surrounded by guarded checkpoints controlling access from the nearby town of Garelochhead. Enhanced security measures are evident throughout, and specialized clearance is required to enter the grounds.
The site features a covered jetty structure that allows submarines to load and unload weapons without being observed from outside. This hidden design was a breakthrough in security engineering and remains central to how the facility operates.
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