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Water wheels and water turbines are two basic types of hydropower machines. Water wheels are the traditional devices used to convert the energy in flowing and falling water into mechanical power. ... Usually large in diameter and slow turning, water wheels work well in streams with large variations in stream flow
Bantry (Irish: Beanntraí, meaning '(place of) Beann's people') is a town in the civil parish of Kilmocomoge in the barony of Bantry on the southwest coast of County Cork, Ireland. It lies in West Cork at the head of Bantry Bay, a deep-water gulf extending for 30 km (19 mi) to the west. The Beara Peninsula is to the northwest, with Sheep's Head peninsula to the southwest.

Bantry
Beanntraí
Town
Bantry from the southeast
Bantry from the southeast
Coat of arms of Bantry
Coat of arms
Motto(s): Na Cluinter Claoitect Oraibh (Irish)
"Never may defeat be told of you"
Bantry is located in Ireland

The focus of the town is a large square, formed partly by infilling of the shallow inner harbour. In former times, this accommodated regular cattle fairs; after modernising as an urban plaza, it now features a weekly market and occasional public functions. Two piers protect the harbour.
Bantry is in the Cork South-West Dáil constituency, which elects three members of Dáil Éireann (the national parliament).
As with other areas on Ireland's southwest coast, Bantry claims an ancient connection to the sixth-century saint Breandán (Naomh Bréanainn) the Navigator. In Irish lore, Saint Breandán was the first person to discover America. To the west of the town is the graveyard marking the site of a 15th-century Franciscan friary, of which nothing remains.
In past centuries, Bantry was a base for major pilchard fisheries and was visited by fishing fleets from Spain, France and the Netherlands.[2] It was still a very small town in 1689 when it was described by the Jacobite army officer and future author John Stevens as "a miserable poor place, hardly worth the name of a town", consisting of "seven or eight small houses, and some mean little cottages". Wolfe Tone Square in the town commemorates Theobald Wolfe Tone, a leader during the 1798 rebellion. In the lead up to the rebellion, Dublin-born Tone led the republican United Irishmen in what he had hoped would be a local re-run of the recent French Revolution; this was to be achieved with the help of French Republicans in overthrowing British rule. The ill-fated French invasion fleet, known as the French expedition to Ireland, arrived in the area in 1796, but its purpose was frustrated by unfavourable winds.[3] For his efforts in preparing the local defences against the French, Richard White, a local landowner, was created Baron Bantry in 1797 by a grateful British administration.[4] A Viscountcy followed in 1800 and in 1816 he became the 1st Earl of Bantry. The mansion and gardens in the Bantry House demesne on the outskirts of the town testify to the family's status.
Irish War of Independence commemorative plaque
During the Irish War of Independence, the 5th Cork Brigade of the Irish Republican Army was active in Bantry, and some members remained so during the Civil War that followed. Action by British forces included the punitive firebombing of several buildings in the town. The names of those who died between 1920 and 1923 "In Defence of the Republic" are listed on the wall of the former courthouse in Wolfe Tone Square.

Sheltering the head of the bay is Whiddy Island, site of a large oil terminal, originally owned by Gulf Oil. On 8 January 1979 the oil tanker Betelgeuse exploded, killing all 42 crew members, as well as seven employees at the terminal. The jetty was seriously damaged, but the storage tanks were not affected. Nevertheless, 250 employees at the terminal, one of the largest employers in the region, lost their jobs. There was also significant environmental impact and the local fishing industry was affected. Local interests subsequently initiated mussel-farming in the sheltered waters between Whiddy and the town.
In 1986, Gulf Oil surrendered its lease on the site to the Irish government. State investment in the 1990s restored part of the terminal and the Irish Government arranged for oil to be stored there during the First Gulf War in case of disruption to oil supplies; it currently holds one-third of the national strategic petroleum reserve. The facility passed from state ownership in 2001 with the proviso that it would remain operational for at least 15 years. It has since been owned and operated by US oil companies Tosco Corporation, ConocoPhillips, Phillips 66 and Zenith Energy Partners. At the time of acquisition by Zenith Energy Partners, the facility employed 30 people and supported up to 100 contractors. It has a storage capacity of more than eight million barrels of crude oil and refined products. The terminal saw a 15% decrease in oil traffic during 2015, according to figures released by the Port of Cork which operates the Bantry Bay port.