Dolphins badge to wear on their uniform on the left breast above any medals. The current badge, adopted in 1972, depicts two golden dolphins facing an anchor surmounted by St Edwards Crown. In September 2020, it was announced that all trainee submariners would be issued their own dolphins badge; similar to the Golden Dolphins in size and shape, though completely black. Active submarines The Submarine Service consists of two classes of Fleet submarines and one class of Ballistic Missile submarines. Fleet submarines There are six fleet submarines in commission – one and five . They are all nuclear submarines and are classified as SSNs. These submarines are armed with the Spearfish torpedo for anti-submarine and anti-surface warfare. They have the ability to fire Tomahawk cruise missiles for attacking targets on land. This capability was used by against the Taliban in 2001 during Operation Veritas. The Fleet submarines are also capable of surveillance and reconnaissance missions. Fleet submarines are sometimes referred to as attack or hunter-killer vessels. Ballistic submarines The four ballistic missile submarines (SSBN) of the Royal Navy are all of the . They were all built by Vickers Shipbuilding and Engineering Ltd., now BAE Systems Submarine Solutions. The SSBN flotilla or bomber 'fleet' tends to be almost a separate entity; for example, it rarely uses pennant numbers preferring to use hull numbers, thus Vanguard 05, Victorious 06, Vigilant 07 and Vengeance 08. The four Vanguard class boats are responsible for the United Kingdom's nuclear deterrent, and use the Trident missile system. Each boat can carry up to 16 Trident II D5 Missiles, each of which may carry up to 12 nuclear warheads. As of 2015, it is UK Government policy to limit the actual number of warheads carried to 40 per boat and 8 Trident Missiles. There has been at least one SSBN on patrol at all times since April 1969. Rescue systems The Royal Navy operated the LR5 Submarine Rescue System, designed for retrieving sailors from stranded submarines. Capable of rescuing up to 16 sailors at a time, the system was deployed to the wreck site of the sunken . The system was replaced in 2004 with the NATO Submarine Rescue System which remains based in the UK. The Royal Navy, along with France and Norway, is part of the NATO Submarine Rescue System. Decommissioning nuclear submarines Twenty-one nuclear submarines awaiting decommissioning have been laid-up at Rosyth and