Arklow (Irish: An tInbhear Mór), County Wicklow, is a historic town on the east coast of Ireland. Founded by the Vikings, it is now a thriving commuter town. It is famous for its pottery (now closed) and its shipbuilding industry.
The town's English name derives from "Arknell's Low" (Arknell was a Viking leader, a low was an area of land). Its Irish name translates as "the big estuary".
Arklow is situated at the mouth of the River Avoca, the longest river entirely within County Wicklow. Historically it was a major seafaring town, with both shipping and fishing using the port, and shipbuilding was a major industry. The national sail training vessels Asgard and Asgard II, and Gypsy Moth III, the yacht that Francis Chichester sailed around the world, were all built in Arklow. Recent times have seen large reductions in shipping and fishing and the shipyards have closed.
Arklow is divided by the River Avoca, which is crossed by the Nineteen Arches Bridge, a stone arch bridge linking the south or main part of the town with the north part, called Ferrybank. Arklow's proximity to Dublin and its consequent attractiveness to commuters have lead to much recent expansion. The town is situated on the N11 route from Rosslare to Dublin, as well as having rail connections along the same route – there are commuter services in and out of the capital.
The town has a long history of industry, in particular the chemical industry. In the early part of the 20th century, a large munitions factory, Kynochs, was established on the north side of the town. This factory employed several thousand workers during the First World War but closed shortly after it, all production being moved to South Africa.
In the 1960s a state-owned fertiliser factory, Nitrogen Éireann Teo (NET), was established on the outskirts of the town. This factory complex comprised a number of chemical plants and manufactured a range of fertilisers from basic raw materials. It was one of the first major chemical plants in Ireland and contributed to the present-day success of the Irish chemical industry. It closed in 2002.
The River Avoca is generally held to be one of the most polluted rivers in Ireland as a result of the long history of industry in the area, both from early mining operations, and more recent chemical industries. In previous centuries, Arklow was renowned for oyster beds, however, these were destroyed over a century ago by pollutants from mining operations flowing down the river into the estuary.