Question: Where in Plymouth is the operator of Liverpool class lifeboat based?

full_context: Document 1: Plymouth: Plymouth railway station, which opened in 1877, is managed by Great Western Railway and also sees trains on the CrossCountry network. Smaller stations are served by local trains on the Tamar Valley Line and Cornish Main Line. First Great Western have come under fire recently, due to widespread rail service cuts across the south-west, which affect Plymouth greatly. Three MPs from the three main political parties in the region have lobbied that the train services are vital to its economy.
Document 2: Plymouth: The first record of the existence of a settlement at Plymouth was in the Domesday Book in 1086 as Sudtone, Saxon for south farm, located at the present day Barbican. From Saxon times, it was in the hundred of Roborough. In 1254 it gained status as a town and in 1439, became the first town in England to be granted a Charter by Parliament. Between 1439 and 1934, Plymouth had a Mayor. In 1914 the county boroughs of Plymouth and Devonport, and the urban district of East Stonehouse merged to form a single county borough of Plymouth. Collectively they were referred to as "The Three Towns".
Document 3: Plymouth: Her Majesty's Courts Service provide a Magistrates' Court and a Combined Crown and County Court in the city. The Plymouth Borough Police, formed in 1836, eventually became part of Devon and Cornwall Constabulary. There are police stations at Charles Cross and Crownhill (the Divisional HQ) and smaller stations at Plympton and Plymstock. The city has one of the Devon and Cornwall Area Crown Prosecution Service Divisional offices. Plymouth has five fire stations located in Camel's Head, Crownhill, Greenbank, Plympton and Plymstock which is part of Devon and Somerset Fire and Rescue Service. The Royal National Lifeboat Institution have an Atlantic 85 class lifeboat and Severn class lifeboat stationed at Millbay Docks.
Document 4: Liverpool-class lifeboat: The Liverpool-class lifeboat was a non self-righting boat operated by the Royal National Lifeboat Institution (RNLI) from its stations around the coast of the United Kingdom and Ireland. The boats were designed for carriage launching and there were two types built, single and twin engined.
Document 5: Plymouth: The city is home to 261,546 (mid-2014 est.) people, making it the 30th most populous built-up area in the United Kingdom. It is governed locally by Plymouth City Council and is represented nationally by three MPs. Plymouth's economy remains strongly influenced by shipbuilding and seafaring including ferry links to Brittany (Roscoff and St Malo) and Spain (Santander), but has tended toward a service-based economy since the 1990s. It has the largest operational naval base in Western Europe – HMNB Devonport and is home to Plymouth University.
Document 6: Clyde-class lifeboat: The Clyde-class lifeboat was operated by the Royal National Lifeboat Institution (RNLI) from two of its stations in the United Kingdom, and . Only three vessels were built for the RNLI, however a fourth vessel was built in the Netherlands to the same lines as 70-001 and 70-003 as a pilot boat for Trinity House.
Document 7: Thames-class lifeboat: The Thames-class lifeboat was operated by the Royal National Lifeboat Institution (RNLI) from its stations around the coasts of the United Kingdom between 1974 and 1997. Six were ordered but only two completed; they have both been sold on to other users.
Document 8: Plymouth: Plymouth City Council is responsible for waste management throughout the city and South West Water is responsible for sewerage. Plymouth's electricity is supplied from the National Grid and distributed to Plymouth via Western Power Distribution. On the outskirts of Plympton a combined cycle gas-powered station, the Langage Power Station, which started to produce electricity for Plymouth at the end of 2009.
Document 9: Rother-class lifeboat: The "Rother"-class lifeboat was a self-righting lifeboat operated by the Royal National Lifeboat Institution around the coast of the United Kingdom and Ireland between 1972 and 1995. They were based on the 37 ft lifeboat.
Document 10: Plymouth: Devonport Dockyard is the UK's only naval base that refits nuclear submarines and the Navy estimates that the Dockyard generates about 10% of Plymouth's income. Plymouth has the largest cluster of marine and maritime businesses in the south west with 270 firms operating within the sector. Other substantial employers include the university with almost 3,000 staff, as well as the Tamar Science Park employing 500 people in 50 companies. Several employers have chosen to locate their headquarters in Plymouth, including Hemsley Fraser.
Document 11: Oakley-class lifeboat: The Oakley-class lifeboat refers to two types of self-righting lifeboat operated by the Royal National Lifeboat Institution around the coast of the United Kingdom and Ireland between 1958 and 1993. The 37-foot Oakley was designed for carriage launching, while the larger 48-foot 6-inch version was designed for slipway launching or to lie afloat. During their service they saved a combined total of 1,456 lives in 3,734 rescue launches.
Document 12: Weston-super-Mare Lifeboat Station: Weston-super-Mare Lifeboat Station is a lifeboat station at Weston-super-Mare in Somerset, England. Split between two sites on Birnbeck Pier and at Knightstone Harbour, it is operated by the Royal National Lifeboat Institution (RNLI). The first lifeboat was stationed in the town in 1882 and since 1969 it has only operated inshore lifeboats (ILBs), currently a and a smaller .
Document 13: Plymouth: Plymouth is served by Plymouth Hospitals NHS Trust and the city's NHS hospital is Derriford Hospital 4 miles (6 km) north of the city centre. The Royal Eye Infirmary is located at Derriford Hospital. South Western Ambulance Service NHS Foundation Trust operates in Plymouth and the rest of the south west; its headquarters are in Exeter.
Document 14: Southampton: Southampton's police service is provided by Hampshire Constabulary. The main base of the Southampton operation is a new, eight storey purpose-built building which cost £30 million to construct. The building, located on Southern Road, opened in 2011 and is near to Southampton Central railway station. Previously, the central Southampton operation was located within the west wing of the Civic Centre, however the ageing facilities and the plans of constructing a new museum in the old police station and magistrates court necessitated the move. There are additional police stations at Portswood, Banister Park, Bitterne, and Shirley as well as a British Transport Police station at Southampton Central railway station.
Document 15: Barnett-class lifeboat: The Barnett-class lifeboat consists of three types of non self-righting displacement hull lifeboats operated by the Royal National Lifeboat Institution (RNLI) from its stations around the coasts of the United Kingdom and Ireland between 1923 and 1987
ground_truth: Millbay Docks
sub_queries: Liverpool class lifeboat >> operator Answer: Royal National Lifeboat Institution
Where in Plymouth is Royal National Lifeboat Institution based? Answer: Millbay Docks