High Quality Content by WIKIPEDIA articles! HMS Avon Vale (pennant number L06) was an escort destroyer of the Hunt Type II class. The Royal Navy ordered Avon Vale`s construction three months after the outbreak of the Second World War.John Brown Shipbuilding Engineering Company Ltd laid down her keel at their Clydebank yard on 12 February 1940, as Admiralty Job Number J1569. After a successful Warship Week national savings campaign in February 1942, the Avon Vale was adopted by the civil community of Trowbridge, Wiltshire.