Royal Navy Astute class submarine HMS Ambush is pictured alongside the forward support vessel RFA Diligence in Gareloch, HMNB Clyde, Scotland.
Forward Support is that element of Naval Operational Logistics by which the military capability of Fleet Force Elements can be sustained away from UK base ports in war fighting or non war fighting environments. RFA Diligence is a sophisticated, multi-purpose ship, fitted with a wide range of workshops for hull and machinery repairs, as well as the facilities for supplying electricity, water, fuel, air, steam, cranes and stores to other ships and submarines.
