The fleet, navy personnel and marines of the Royal Netherlands Navy are deployed worldwide in the interests of ensuring security at sea and from the sea. The Naval Maintenance and Sustainment Agency in Den Helder is responsible for the maintenance of ships, submarines and systems. Quaysides, knowledge and facilities have all been made available for civilian parties. The joint use of the infrastructure and the Naval quaysides operated by civilian companies guarantees hugely-extended port capacity. This in turn offers business more space to do business. In addition, the maintenance and logistic services for high-end, high-tech (maritime) systems delivers added value for all the facilities required for the offshore and civilian sector.