The Royal Navy Submarine Museum is a visitor attraction in Hampshire in the UK. As its name suggests, the Museum is a showcase for the history of the submarines of the Royal Navy, explores what life was like aboard such vessels, and considers the future of submarine technology.
The main museum building contains artefacts from submarines and other vessels that were used to explore the underwater world through the ages. At the back of the entrance foyer is X24, the last surviving example of a 'midget submarine' that served during the Second World War. Exhibits on display elsewhere include engine machinery, toilets and even a Folding Organ that was small enough to fit through the hatch of a submarine and was used to provide music during religious services. There are hands on activities to help visitors of all ages to get a feel for the submarine technology and the sights, sounds and smells of life underwater.
An adjacent building contains a timeline describing the history of underwater exploration (and warfare from the time of Alexander the Great onwards. The building's main attraction, though, is Holland 1, the first submarine commissioned by the Royal Navy - a ramp allows visitors to see right round (and inside) it. Holland 1 was built in Barrow-in-Furness in the UK, to a design1 by the US-based submarine pioneer John Philip Holland.
The centrepiece of the Royal Navy Submarine Museum is the submarine HMS Alliance. At 86m (281ft) long she dominates the skyline outside the main museum building. Guided tours are sometimes available, and visitors are free to climb the stairs to explore the length of the vessel by themselves at other times. A lift allows people who cannot manage steps to enter one of the submarine's hatches and see the compartment containing an escape hatch, oxygen masks, bunks and torpedo tubes. The virtual tour on Google Maps gives a good flavour of the layout of that compartment and the other compartments within the submarine.
HMS Alliance was built in 1945, during the Second World War, but didn't enter service in the Royal Navy until 1947. Even though she was bigger than previous submarine models, she was faster than them and had a maximum range of 15,000 miles. In addition to periscopes, guns and torpedos, she was fitted with new technology - a 'snort mast' to enable the diesel engines to work even when the submarine was submerged.
The submarine contains facilties for a crew of 65 including Officers, Engine Room Artificers, Stokers and Ratings. At any one time, 1/3 of the crew would be working, 1/3 would be sleeping and 1/3 would be awake but off duty. The crew slept in their clothes so as to be ready in case of a call to 'Action Stations' when all the crew would have jobs to do. The amount of fresh water that could be stored on board was limited, so it was prioritised for drinking - the men could have a bath in salt water during times when the submarine was safe enough to spend time on the surface of the sea.
In 1958 HMS Alliance was upgraded to enable her to play a role in the Cold War. She was fitted with sonar and new torpedos with the ability to target enemy submarines as well as ships. To make the submarine even more stealthy, the Conning Tower and deck guns were removed to create a sleeker silhouette.
HMS Alliance served well during her long career, but experienced two notable incidents. In January 1968 she ran aground on the Isle of Wight but all the crew was rescued and she was able to be refloated the next day. In September 1971 the crew was not so fortunate when there was a build up of hydrogen gas that occurred while the batteries were being charged - the gas exploded, killing one man and injuring others. By 1979 HMS Alliance was the last surviving submarine of her class, so she was retired from the Royal Navy Submarine Service and turned into a museum and memorial.
The Museum is part of the Portsmouth Historic Dockyard set of attractions. There is a charge to enter the Museum, but various ticket options are available, including ones for all attractions that are valid for 12 months so you can get value for money from repeat visits. A waterbus2 operates to take visitors between the main Historic Dockyard and the Gosport attractions (the Submarine Museum and the Explosion! Museum of Naval Firepower).
The car park (including spaces for disabled people with Blue Badge parking permits) is quite a distance from the entrance to the Museum3 but there are items for visitors to look at as they make their way along the footpath, such as a piece of a submarine and a diving suit. There is a small play area for children, a picnic area, a coffee shop, and a shop selling a range of books, clothes and souvenirs.