Some of the models were used for instructional purposes. For over 150 years, until it closed in 1992, the Royal William Yard supplied the Royal Navy with stores and victuals. The large collection of artefacts, ranging from uniforms to silver, china and kitchenware, which was displayed in the yard, survived the war and is now in the museum. It is a research collection of great historical value but also includes many items of general interest, such as china from the Royal Yachts. Other artefacts on display relate to the general history of the Royal Dockyard and its facilities which have been used by the Royal Navy over the last 300 years.
More historical material continues to be added.
A functional submarine periscope is mounted in the museum and can be used by visitors to view the base and the river. At the present time there is no direct public access to the museum and visits by organised groups or individuals have to be by appointment to pass through security at the entrance to the Naval Base. It is hoped that with the acquisition of new buildings that this will change in the future. The tour, which is free, includes a trip though the dockyard. Arrangements can usually be made for individuals who give a few days notice to enter the Base with one of these groups.