Question: HMS Wellington, is a "Grimsby"-class sloop, formerly of the Royal Navy, now moored alongside the Victoria Embankment, at Temple Pier, on which river that flows through southern England?

full_context: Document 1: HMS Statice (K281): When the United States entered World War II at the end of 1941, the United States Navy found itself deficient in ocean escort-type vessels. A crash building program was instituted; but, to meet more immediate needs, the government contracted with shipbuilding firms in England and Canada to build Flower-class corvette . Vim" (PG-99) was one of those British-type escorts. She was launched on 1 April 1943 at the Collingwood Shipyard in Collingwood, Ontario. Nine days later, however, she was transferred to the Royal Navy under the terms of the lend-lease agreement in return for another Flower-class corvette then under construction in Canada. The British renamed her HMS "Statice, and she served the Royal Navy under the name through World War II. On 21 June 1946, she was returned to the United States Navy. Though carried on the Navy list as PG-99, the corvette never saw active service with the United States Navy. She was sold on 7 May 1947. To whom she was sold and to what purpose she was put is unknown.
Document 2: Thames Gateway Bridge: The Thames Gateway Bridge was a proposed crossing over the River Thames in east London, England. It was first mooted in the 1970s but never came to fruition. In November 2008, Boris Johnson, the then Mayor of London, formally cancelled the entire £500 million scheme.
Document 3: River Glaven: The River Glaven in the eastern English county of Norfolk is 10½ miles long and flows through picturesque North Norfolk countryside to the North Sea. Rising from a tiny headwater in Bodham the river starts 2½ miles before Selbrigg Pond where three streams combine at the outfall. The scenic value of the Glaven valley is important to the tourist industry in North Norfolk.
Document 4: HMS Wellington (U65): HMS "Wellington (launched Devonport, 1934) is a "Grimsby"-class sloop, formerly of the Royal Navy. During the Second World War, she served as a convoy escort ship in the North Atlantic. She is now moored alongside the Victoria Embankment, at Temple Pier, on the River Thames in London, England, as the headquarters ship of the Honourable Company of Master Mariners, where she is known as HQS Wellington". It was always the ambition of the founding members of the company to have a livery hall. Up to the outbreak of war in 1939, various proposals were examined, including the purchase of a sailing ship, "Archibald Russell" .
Document 5: History of the Port of Southampton: The Port of Southampton is a major passenger and cargo port located in the central part of the south coast of England. It has been an important port since the Roman occupation of Britain nearly two thousand years ago, and has a multifaceted history. From the Middle Ages to the end of the 20th century, it was a centre for naval shipbuilding and a departure point for soldiers going to war. The port also played a role in the development of hovercraft, flying boat services, seaplanes and the Spitfire fighter plane. Before the advent of jet travel, Southampton was Britain's gateway to the world. The port also played a minor role in the history of Britain's canals.
Document 6: SS Nomadic (1911): SS "Nomadic" is a former tender of the White Star Line, launched on 25 April 1911 in Belfast now on display in Belfast's Titanic Quarter. She was built to transfer passengers and mail to and from RMS "Olympic" and RMS "Titanic", and is the only White Star Line vessel in existence today.
Document 7: HMS Foylebank: HMS "Foylebank was a converted 5,500 ton merchant ship active during the Second World War. She was launched as the MV "Foylebank by Bank Line (Andrew Weir Shipping) in 1930 and requisitioned by the Royal Navy in September 1939. She was converted into an anti-aircraft ship, equipped with 0.5 inch (12.7 mm) machine guns, two quad 2-pounder pom-poms and four twin high angle 4-inch gun turrets. The "Foylebank" saw action in Portland Harbour next to the Isle of Portland in Dorset, England. She arrived in Portland on 9 June 1940 for a build-up to anti-aircraft duties commanded by Captain H.P. Weir.
Document 8: Upper Thames River Conservation Authority: The Upper Thames River Conservation Authority is a body based in London, Ontario, Canada. It was created in 1947. It was responsible for the construction of the Fanshawe Dam, completed in the 1950s, to control flooding from the Thames River, which runs through London. During the last ice age, the site of London was the terminus of a large glacier. When the region warmed at the end of the ice age, the glacier melted and receded North, leaving behind a drainage ditch and features such as Sifton Bog. As such, the Thames is a watershed for most of Western Ontario, and is therefore highly susceptible to seasonal flooding. In 1937, such flooding had devastating consequences, destroying over 1,000 homes, and causing millions of dollars in damage.
Document 9: River Lea: The River Lea in England originates in Marsh Farm, Leagrave, Luton in the Chiltern Hills and flows generally southeast, east, and then south through east London where it meets the River Thames, the last section being known as Bow Creek. It is one of the largest rivers in London and the easternmost major tributary of the Thames. Its valley creates a long chain of marshy ground along its lower length, much of which has been used for gravel and mineral extraction, reservoirs and industry. Much of the river has been canalised to provide a navigable route for boats into eastern Hertfordshire, known as the Lee Navigation. While the lower Lea remains somewhat polluted, its upper stretch and tributaries, classified as chalk streams, are a major source of drinking water for London. A diversion known as the New River, opened in 1613, abstracts clean water away from the lower stretch of the river for drinking. Its origins in the Chilterns contribute to the extreme hardness (high mineral content) of London tap water.
Document 10: HMS Lowestoft (U59): HMS "Lowestoft" was a "Grimsby"-class sloop of the Royal Navy. Built at Devonport Dockyard in the 1930s, "Lowestoft" was launched in 1934 and commissioned later that year. She served on the China Station, based at Hong Kong until the outbreak of the Second World War. "Lowestoft" served as a convoy escort during the war, both in the North Atlantic and off the west coast of Africa.
Document 11: River Thames: The River Thames ( ) is a river that flows through southern England, most notably through London. At 215 mi , it is the longest river entirely in England and the second longest in the United Kingdom, after the River Severn. It also flows through Oxford (where it is called Isis), Reading, Henley-on-Thames and Windsor. The lower reaches of the river are called the Tideway, derived from its long tidal reach up to Teddington Lock. It rises at Thames Head in Gloucestershire, and flows into the North Sea via the Thames Estuary. The Thames drains the whole of Greater London.
Document 12: New River (England): The New River is an artificial waterway in England, opened in 1613 to supply London with fresh drinking water taken from the River Lea and from Chadwell Springs and Amwell Springs (which ceased to flow by the end of the nineteenth century), and other springs and wells along its course.
Document 13: HMS Willowherb (K283): During the first year and more after America entered the war against the Axis, the United States Navy suffered from an acute shortage of warships, particularly of antisubmarine warfare and escort types. To fill that need, an extensive ship construction and acquisition program was inaugurated. Part of that program consisted of placing orders with British and Canadian firms already tooled up to produce Flower-class corvette . Vitality" (PG-100) was such a ship. However, before she was launched on 15 April 1943 by the Midland Shipyard in Canada, she was traded to the Royal Navy under the terms of the lend-lease agreement for a similar ship being constructed in Canada. The British renamed her HMS "Willowherb, and she served in the Royal Navy for the duration of the war. On 11 June 1946, she was returned to the custody of the United States Navy. Though carried on the Navy list as PG-100 following the war, "Vitality" never actively served the United States Navy. She remained idle until sold on 7 May 1947. To whom she was sold and for what purpose is unknown, but one source indicates that she was not scrapped until 1961.
Document 14: Thamesville: Thamesville is a community in Chatham-Kent, Ontario, Canada. It is located at the junction of former provincial Highways 2 and 21, between Chatham and London. Its name comes from the Thames River that flows nearby and the suffix -ville.
Document 15: HMS Deptford (U53): HMS "Deptford" was a "Grimsby"-class sloop of the British Royal Navy. Built at Chatham Dockyard in the 1930s, "Deptford" was launched in 1935 and commissioned later that year. The ship saw early service on the Persian Gulf station, but the outbreak of the Second World War saw "Deptford" serving as a convoy escort in the North Atlantic and Mediterranean, sinking a German U-boat in 1941. She survived the war, and was scrapped in 1948.
ground_truth: River Thames