considered a hazard to shipping and dismantled in 1959–60. Parts of the bases were towed ashore by the Cliffe fort at Alpha wharf near the village of Cliffe, Kent, where they were still visible at low tide. Red Sands Fort (U6) There are seven towers in the Red Sands group at the mouth of the Thames Estuary. The towers had been connected by metal grate walk-ways. In 1959 consideration was given to refloating the Red Sands Fort and bringing the towers ashore but the costs were prohibitive. In the early 21st century, in response to proposals to demolish the fort, a group called Project Redsands was formed to try to preserve it. It was the only fort that could be visited safely from a platform in between the legs of one of the towers. The fort was inspected by the structural engineering company Structural Repairs in 2021. They found that 6 of the towers had severe structural defects, with elements already lost to the sea, the 7th tower also had the same defects, with elements due to imminently fall into the sea. The fort could not be accessed safely in its present condition. Shivering Sands Fort (U7) This group was built near the Thames estuary for anti-aircraft defence and made up of several towers north of Herne Bay from the nearest land. One of the seven towers collapsed in 1963 when fog caused the ship Ribersborg to stray off course and collide with one of the towers. In 1964, the Port of London Authority placed wind and tide monitoring equipment on the Shivering Sands searchlight tower, which was isolated from the rest of the fort by the demolished tower. This relayed data to the mainland via a radio link. In August and September 2005, artist Stephen Turner spent six weeks living alone in the searchlight tower of the Shivering Sands Fort in what he described as "an artistic exploration of isolation, investigating how one's experience of time changes in isolation, and what creative contemplation means in a 21st-century context". Liverpool Army Forts The Liverpool sea forts were constructed in the same way the forts in the Thames estuary were, they were designed to defend Liverpool and the industrial heartland of Liverpool from an aerial attack from the west. Originally 38 towers were intended to be built but only 21 towers were built (three forts). The forts were built from October