Submarine Command System Contract - A £46m contract to support and maintain a new sophisticated combat system across the Royal Navy's submarine fleet has been awarded to BAE Systems Maritime - Submarines.    The Design Services Arrangement contract will ensure that the system, which is used to navigate vessels as well as gather intelligence and defend against attacks, is maintained and developed over the next decade – it will be fitted on all three classes of submarine in service (i.e : "V", "A" and "T").