HM Naval Base Clyde is home to the UK's Trident submarines.
As part of an international rally, peace campaigners have protested outside HMNB Clyde - the home of the UK's nuclear deterrent.
Demonstrators walked from the peace camp at Faslane in Argyll and Bute to the gates of HMNB Clyde, where the country's nuclear submarines are based.
The base is home to the Royal Navy's Trident fleet which consists of four ballistic missile submarines (SSBNs); Vanguard, Victorious, Vigilant and Vengeance.
The Trident fleet always has one armed submarine at sea, one undergoing maintenance, and two in port or on training.
The demonstration follows an MPs report that the current fleet of subs is not fit for purpose.
Organisers said: "Scotland is a significant and relatively autonomous part of a nuclear-armed state which opposes its possession of weapons of mass destruction.
"As things stand we cannot become a party to the new UN Treaty for the Prohibition of Nuclear Weapons, but there are lots of ways in which we can align ourselves to the Treaty."
An MoD spokesperson said: “We recognise the democratic right of individuals to participate in peaceful protest activities.
"The Ministry of Defence Police have resources in place to safeguard normal operations at the site.”