Fishing In the 19th century, Arklow was used as a port for oyster fisheries, with 40 million oysters harvested from the surrounding oyster reefs in 1863. While numbers dropped significantly, due to intensive harvesting and pollution, as of 2021 the Native Oyster Reef Restoration Ireland (NORRI) group had been launched to encourage the reintroduction of oysters to the region. As of the 21st century, the fishing industry in Arklow mainly involves catches of whelks, mussels and herring.
Industry In 1884,
Charles Stewart Parnell rented Big Rock townland from his cousin William Proby,
Earl of Carysfort, and commenced quarrying. Parnell was also a supporter of the Arklow harbour scheme. The Parnell quarries closed in the 1920s. In the early part of the 20th century, a large munitions factory,
Kynoch, 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. 17 workers were killed in an explosion at Kynoch in 1917. The town is also historically known for its shipbuilding industry and pottery. The latter was produced at
Arklow Pottery, which closed in 1998. In the 1960s, a state-owned fertiliser factory, Nitrogen Éireann Teoranta, later Irish Fertiliser Industries, 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 closed in 2002. There is still an industrial base in Arklow, with
Servier remaining as one of the manufacturing companies in Arklow.
Allergan formerly had a plant locally, but this closed in 2009. In 2009,
Elavon, a credit card processing company, purchased a new business site at Arklow Business Park. In 2019, planning permission was granted for a data centre at the Avoca River Business Park.
Shipping and shipbuilding The former national sail training vessel
Asgard II was built by John Tyrrell & Son Ltd in Arklow. Another John Tyrrell & Son boat,
Gipsy Moth III, was sailed to victory by
Francis Chichester in the 1st Single-Handed Trans-Atlantic Race in 1960. His time of 40 and 1/2 days was 16 days faster than the previous record crossing. While now more focused on leisure traffic than commercial traffic, Arklow Harbour remains the headquarters of
Arklow Shipping, numerically the largest shipping company in Ireland. This company maintains a fleet of 56 cargo ships and a division in
Rotterdam in the Netherlands.
Retail Arklow services a large catchment area (including a number of surrounding towns and villages) and has approximately 32,000m2 of retail space. As of 2018, approximately 20% of this retail space was vacant. Among the town's largest retail centres is the Bridgewater Shopping Centre, which opened in 2007 and was sold in 2016 for €33.25 million. == Environment ==