US Navy Sinks Decommissioned Warship USS Klakring Off Scottish Coast in Live-Fire Exercise

A retired United States Navy frigate has been sent to the bottom of the North Atlantic during a multinational live-fire training exercise conducted off the west coast of Scotland. The decommissioned USS Klakring was struck by both a missile and a torpedo before sinking approximately 170 miles (274km) west of the Outer Hebrides last Monday, according to the US Navy.

The vessel, which had served for three decades before being taken out of active duty, was used as a target during Exercise Atlantic Thunder 2026, a joint operation involving American and British armed forces. The exercise formed part of the Ministry of Defence's Hebrides range, a facility long used for testing weapons systems and conducting large-scale naval training in the waters off Scotland's remote western islands.

Prior to the sinking, USS Klakring was subjected to what the US Navy described as a rigorous cleaning process designed to strip the hulk of contaminants and obsolete equipment. Officials said the preparation work was intended to ensure that the environmental impact of the exercise remained minimal, in line with strict environmental regulations governing such operations.

Personnel involved in the exercise also conducted checks for the presence of whales and dolphins in the area before the live-firing commenced. The precautionary measures reflect growing awareness within military planning of the potential risks that explosive naval exercises pose to marine mammals, which can be affected by underwater noise and shockwaves generated by detonations.

The former guided missile frigate was engaged by a missile launched from USS Paul Ignatius and a torpedo fired by USS Massachusetts. The participation of two active warships in the sinking demonstrates the scale of resources devoted to such training events, which are designed to simulate realistic combat conditions for crews operating sophisticated weapons systems.

The Royal Navy also took part in the exercise, testing what have been described as "ship-busting" weapons during the training. The involvement of British forces underscores the close defence relationship between the UK and the US, particularly in the maritime domain, where the two navies frequently cooperate on exercises and operations in the North Atlantic and beyond.

USS Klakring entered service in 1983 during a period of significant naval expansion under the Reagan administration, when the US sought to counter Soviet maritime power during the Cold War. The ship was decommissioned in 2013 after nearly 30 years of service, a lifespan typical for frigates of its class, which endure constant exposure to saltwater and heavy operational use.

The frigate was named in honour of Rear Adm Thomas B Klakring, a submariner who was awarded three US Navy Crosses for his actions as a submarine commander during World War Two. The Navy Cross is the second-highest decoration for valour that can be awarded to members of the US Navy, and Klakring's repeated recognition reflects the exceptional nature of his wartime service.

Sinking exercises of this kind are not unprecedented. Other warships, including an aircraft carrier in 2006, have been deliberately sunk at sea by the US as part of training programmes and, in some cases, to create artificial reefs that can support marine life. The dual purpose of such operations — military readiness and environmental enhancement — has made them an established feature of naval practice.

A US Navy spokesperson explained the rationale behind the practice, stating that extensive preparations for the exercise included putting the hulk through a rigorous cleaning process to remove contaminants and old equipment. This, the spokesperson said, assures that the environmental impact of the exercise is minimal.

The spokesperson added that sinking ex-navy vessels, which are specially prepared as targets, provides a practicable method for conducting large scale exercises of this type. Such training, they noted, allows armed forces to operate at the high level required to maintain readiness for potential real-world engagements.

The Hebrides range, operated by the Ministry of Defence, has hosted numerous military exercises over the years, including Exercise Joint Warrior, a major biannual event that brings together forces from multiple nations. The remote location offers space for live-firing and manoeuvres that would be difficult to conduct safely in busier or more populated waters.

Past exercises in the region have attracted attention for their scale and international participation. In 2018, for example, Russian and Belarusian observers arrived to inspect UK forces during Exercise Joint Warrior, a rare instance of military transparency amid heightened tensions between Russia and Western nations. The same year, Dutch marines were involved in an exercise that saw them use a council ferry during training activities.

The sinking of USS Klakring highlights the continuing importance of live-fire training to naval forces, which must be able to demonstrate the effectiveness of their weapons in realistic conditions. While simulators and computer modelling play an increasing role in modern military preparation, the destruction of a real vessel provides data and experience that cannot be fully replicated by other means.

For the crews of USS Paul Ignatius and USS Massachusetts, the exercise offered a rare opportunity to fire live weapons at a full-sized ship target. Such experience is valuable for assessing the performance of missiles and torpedoes against genuine hull structures, and for understanding the effects of multiple strikes on a large vessel.

The decision to sink the frigate off Scotland also reflects the strategic significance of the North Atlantic, a region that has regained prominence in Western defence planning in recent years. With renewed attention to the "GIUK gap" — the maritime corridor between Greenland, Iceland and the UK — exercises in these waters serve as a signal of allied capability and resolve.

Environmental groups have previously raised concerns about the impact of naval exercises on marine ecosystems, particularly regarding underwater noise and the potential for unexploded ordnance. However, the US Navy's emphasis on cleaning the vessel and conducting wildlife checks suggests an effort to address some of these criticisms while continuing essential training.

For the Outer Hebrides, the exercise brings both economic activity and occasional controversy, as local communities weigh the benefits of hosting military operations against concerns about disruption and environmental protection. The MoD range remains a key employer and source of revenue in a remote region with limited economic opportunities.

The sinking of USS Klakring marks the end of a vessel that served through the final years of the Cold War and into an era of shifting security challenges. Its final contribution — as a target for allied training — reflects the enduring value that even obsolete warships can provide to the navies that once operated them.

As Exercise Atlantic Thunder 2026 concludes, the lessons learned from the live-fire sinking will be analysed by both US and UK forces. The data gathered will inform future training, weapons development, and tactical doctrine, ensuring that the investment in such exercises yields tangible benefits for the defence of allied nations.