The Irish Sea (Irish: Muir Éireann / An Mhuir Mheann, Manx: Y Keayn Yernagh, Scots: Erse Sea, Scottish Gaelic: Muir Èireann, Ulster-Scots: Airish Sea, Welsh: Môr Iwerddon) separates the islands of Ireland and Great Britain; linked to the Celtic Sea in the south by St George's Channel, and to the Inner Seas off the West Coast of Scotland in the north by the Straits of Moyle. Ireland and all countries that comprise the United Kingdom are on its shoreline: Scotland on the north, England on the east, Wales on the southeast, and Northern Ireland and the Republic of Ireland on the west.
Anglesey, Wales, is the largest island in the Irish Sea. The second in size is the Isle of Man and the sea may occasionally, but rarely, be referred to as the Manx Sea (Irish: Muir Meann, Manx: Mooir Vannin, Scottish Gaelic: Muir Mhanainn). The Irish Sea is of significant economic importance to regional trade, shipping and transport, fishing, and power generation in the form of wind power and nuclear power plants. Annual traffic between Great Britain and Ireland amounts to over 12 million passengers and 17 million tonnes (17,000,000 long tons; 19,000,000 short tons) of traded goods.
Limits and ports: ◘ ferry port / ◘ freight only
|Basin countries||United Kingdom; Republic of Ireland; Isle of Man|
|Surface area||46,007 km2 (17,763 sq mi)|
|Water volume||2,800 km3 (2.3×109 acre⋅ft)|
|Islands||Anglesey and Holy Island, Isle of Man and Calf of Man, Bardsey Island, Walney, Lambay, Ireland's Eye|
The Irish Sea is connected to the North Atlantic at both its northern and southern ends. To the north, the connection is through the North Channel between Scotland and Northern Ireland and the Malin Sea. The southern end is linked to the Atlantic through the St George's Channel between Ireland and Pembrokeshire, and the Celtic Sea. It is composed of a deeper channel about 190 miles (310 km) long and 20–30 miles (32–48 km) wide on its western side and shallower bays to the east. The western channel's depth ranges from 80 metres (260 ft) up to 275 m (902 ft) in the Beaufort's Dyke in the North Channel.
Cardigan Bay in the south, and the waters to the east of the Isle of Man, are less than 50 m (160 ft) deep. With a total water volume of 2,430 km3 (580 cu mi) and a surface area of 47,000 km2 (18,000 sq mi), 80% is to the west of the Isle of Man. The largest sandbanks are the Bahama and King William Banks to the east and north of the Isle of Man and the Kish Bank, Codling Bank, Arklow Bank and Blackwater Bank near the coast of Ireland. The Irish Sea, at its greatest width, is 120 miles (190 km) and narrows to 47 miles (76 km).
The International Hydrographic Organization defines the limits of the Irish Sea (with St George's Channel) as follows,
The Irish Sea has undergone a series of dramatic changes over the last 20,000 years as the last glacial period ended and was replaced by warmer conditions. At the height of the glaciation, the central part of the modern sea was probably a long freshwater lake. As the ice retreated 10,000 years ago, the lake reconnected to the sea.
Ireland has no tunnel or bridge connection to Great Britain; the vast majority of heavy goods trade is done by sea. Northern Ireland ports handle 10 million tonnes (9,800,000 long tons; 11,000,000 short tons) of goods trade with the rest of the United Kingdom annually; the ports in the Republic of Ireland handle 7.6 million tonnes (7,500,000 long tons; 8,400,000 short tons), representing 50% and 40% respectively of total trade by weight.
The Port of Liverpool handles 32 million tonnes (31,000,000 long tons; 35,000,000 short tons) of cargo and 734 thousand passengers a year. Holyhead port handles most of the passenger traffic from Dublin and Dún Laoghaire ports, as well as 3.3 million tonnes (3,200,000 long tons; 3,600,000 short tons) of freight.
Ports in the Republic handle 3,600,000 travellers crossing the sea each year, amounting to 92% of all Irish Sea travel.
Ferry connections from Wales to Ireland across the Irish Sea include Fishguard Harbour and Pembroke to Rosslare, Holyhead to Dún Laoghaire and Holyhead to Dublin. From Scotland, Cairnryan connects with both Belfast and Larne. There is also a connection between Liverpool and Belfast via the Isle of Man or direct from Birkenhead. The world's largest car ferry, Ulysses, is operated by Irish Ferries on the Dublin Port–Holyhead route; Stena Line also operates between Britain and Ireland.
Transport for Wales Rail, Iarnród Éireann, Irish Ferries, Stena Line, Northern Ireland Railways, Stena Line and Abellio ScotRail promote SailRail with through rail tickets for the train and the ferry.
The Caernarfon Bay basin contains up to 7 cubic kilometres (1.7 cu mi) of Permian and Triassic syn-rift sediments in an asymmetrical graben that is bounded to the north and south by Lower Paleozoic massifs. Only two exploration wells have been drilled so far, and there remain numerous undrilled targets in tilted fault block plays. As in the East Irish Sea Basin, the principal target reservoir is the Lower Triassic, Sherwood Sandstone, top-sealed by younger Triassic mudstones and evaporites. Wells in the Irish Sector to the west have demonstrated that pre-rift, Westphalian coal measures are excellent hydrocarbon source rocks, and are at peak maturity for gas generation (Maddox et al., 1995). Seismic profiles clearly image these strata continuing beneath a basal Permian unconformity into at least the western part of the Caernarfon Bay Basin.
The timing of gas generation presents the greatest exploration risk. Maximum burial of, and primary gas migration from, the source rocks could have terminated as early as the Jurassic, whereas many of the tilted fault blocks were reactivated or created during Paleogene inversion of the basin. However, it is also possible that a secondary gas charge occurred during regional heating associated with intrusion of Paleogene dykes, such as those that crop out nearby on the coastline of north Wales. (Floodpage et al., 1999) have invoked this second phase of Paleogene hydrocarbon generation as an important factor in the charging of the East Irish Sea Basin's oil and gas fields. It is not clear as yet whether aeromagnetic anomalies in the southeast of Caernarfon Bay are imaging a continuation of the dyke swarm into this area too, or whether they are instead associated with deeply buried Permian syn-rift volcanics. Alternatively, the fault block traps could have been recharged by exsolution of methane from formation brines as a direct result of the Tertiary uplift (cf. Doré and Jensen, 1996).
The Cardigan Bay Basin forms a continuation into British waters of Ireland's North Celtic Sea Basin, which has two producing gas fields. The basin comprises a south-easterly deepening half-graben near the Welsh coastline, although its internal structure becomes increasingly complex towards the southwest. Permian to Triassic, syn-rift sediments within the basin are less than 3 km (1.9 mi) thick and are overlain by up to 4 km (2.5 mi) of Jurassic strata, and locally also by up to 2 km (1.2 mi) of Paleogene fluvio-deltaic sediments. The basin has a proven petroleum system, with potentially producible gas reserves at the Dragon discovery near the UK/ROI median line, and oil shows in a further three wells. The Cardigan Bay Basin contains multiple reservoir targets, which include the Lower Triassic (Sherwood Sandstone), Middle Jurassic shallow marine sandstones and limestone (Great Oolite), and Upper Jurassic fluvial sandstone, the reservoir for the Dragon discovery.
The most likely hydrocarbon source rocks are Early Jurassic marine mudstones. These are fully mature for oil generation in the west of the British sector, and are mature for gas generation nearby in the Irish sector. Gas-prone, Westphalian pre-rift coal measures may also be present at depth locally. The Cardigan Bay Basin was subjected to two Tertiary phases of compressive uplift, whereas maximum burial that terminated primary hydrocarbon generation was probably around the end of the Cretaceous, or earlier if Cretaceous strata, now missing, were never deposited in the basin. Despite the Tertiary structuration, the Dragon discovery has proved that potentially commercial volumes of hydrocarbons were retained at least locally in Cardigan Bay. In addition to undrilled structural traps, the basin contains untested potential for stratigraphic entrapment of hydrocarbons near synsedimentary faults, especially in the Middle Jurassic section.
The Liverpool Bay Development is BHP Billiton Petroleum's largest operated asset. It comprises the integrated development of five offshore oil and gas fields in the Irish Sea:
Oil is produced from the Lennox and Douglas fields. It is then treated at the Douglas Complex and piped 17 km (11 mi) to an oil storage barge ready for export by tankers. Gas is produced from the Hamilton, Hamilton North and Hamilton East reservoirs. After initial processing at the Douglas Complex the gas is piped by subsea pipeline to the Point of Ayr gas terminal for further processing. The gas is then sent by onshore pipeline to PowerGen's combined cycle gas turbine power station at Connah's Quay. PowerGen is the sole purchaser of gas from the Liverpool Bay development.
The Liverpool Bay development comprises four offshore platforms. Offshore storage and loading facilities. The onshore gas processing terminal at Point of Ayr. Production first started at each filed as follows: Hamilton North in 1995, Hamilton in 1996, Douglas in 1996, Lennox (oil only) in 1996 and Hamilton East 2001. The first contract gas sales were in 1996.
The quality of the water in Liverpool Bay was historically contaminated by dumping of sewage sludge at sea but this practice became illegal in December 1988 and no further sludge was deposited after that date.
With 210 billion cubic metres (7.5 trillion cubic feet) of natural gas and 176 million barrels (28,000,000 m3) of petroleum estimated by the field operators as initially recoverable hydrocarbon reserves from eight producing fields (DTI, 2001), the East Irish Sea Basin is at a mature exploration phase. Early Namurian basinal mudstones are the source rocks for these hydrocarbons. Production from all fields is from fault-bounded traps of the Lower Triassic formation, principally the aeolian Sherwood Sandstone reservoir, top-sealed by younger Triassic continental mudstones and evaporites. Future mineral exploration will initially concentrate on extending this play, but there remains largely untested potential also for gas and oil within widespread Carboniferous fluvial sandstone reservoirs. This play requires intraformational mudstone seal units to be present, as there is no top-seal for reservoirs subcropping the regional base Permian unconformity in the east of the basin, and Carboniferous strata crop out at the sea bed in the west.
Previous exploration drilling in the Kish Bank Basin has confirmed the potential for petroleum generation with oil shows seen in a number of wells together with natural hydrocarbon seeps recorded from airborne surveys. New analysis of vintage 2-D seismic data has revealed the presence of a large undrilled structural closure at Lower Triassic level situated about 10 kilometres (6 mi) offshore Dublin. This feature, known as the Dalkey Island exploration prospect, may be prospective for oil, as there are prolific oil productive Lower Triassic reservoirs nearby in the eastern Irish Sea offshore Liverpool. Whilst the Dalkey Island exploration prospect could contain about 870 million barrels (140,000,000 m3) of oil in place, this undrilled prospect still has significant risk and the partners are currently advancing a focused work programme in order to better understand and hopefully mitigate these risks. However, given its location in shallow water and close proximity to shore, the prospect is of great interest as exploration drilling, together with any future development costs, are likely to be low.
Below is a list of cities and towns around the Irish Sea coasts in order of size:
|1||Dublin||County Dublin||Leinster||1,173,179||Republic of Ireland|
|3||Belfast||County Antrim||Ulster||847,153||Northern Ireland|
|7||Bangor||County Down||Ulster||61,011||Northern Ireland|
|11||Lytham St Annes||Lancashire||North West||42,954||England|
|12||Drogheda||County Louth||Leinster||40,956||Republic of Ireland|
|13||Dundalk||County Louth||Leinster||39,004||Republic of Ireland|
|15||Bray||County Wicklow||Leinster||32,600||Republic of Ireland|
|18||Douglas||-||Isle of Man||27,938||Isle of Man|
|19||Carrickfergus||County Antrim||Ulster||27,903||Northern Ireland|
|20||Dún Laoghaire||Dún Laoghaire–Rathdown||Leinster||26,525||Republic of Ireland|
|26||Wexford||County Wexford||Leinster||20,188||Republic of Ireland|
|27||Larne||County Antrim||Ulster||18,775||Northern Ireland|
|28||Arklow||County Wicklow||Leinster||14,353||Republic of Ireland|
|30||Holyhead||Holy Island||Isle of Anglesey||11,431||Wales|
|Name||Area (km²)||Rank (area)||Permanent Population||Rank (pop.)||Country|
|Isle of Man||572||02||84,497||01||Isle of Man|
|Lambay Island||5.54||05||<10||08||Republic of Ireland|
|Bull Island||3||06||<20||07||Republic of Ireland|
|Calf of Man||2.50||08||0||-||Isle of Man|
|Ynys Gored Goch||0.004||-||<5||10||Wales|
The most accessible and possibly the greatest wildlife resource of the Irish Sea lies in its estuaries: particularly the Dee Estuary, the Mersey Estuary, the Ribble Estuary, Morecambe Bay, the Solway Firth, Loch Ryan, the Firth of Clyde, Belfast Lough, Strangford Lough, Carlingford Lough, Dundalk Bay, Dublin Bay and Wexford Harbour. However, a lot of wildlife also depends on the cliffs, salt marshes and sand dunes of the adjoining shores, the seabed and the open sea itself.
The information on the invertebrates of the seabed of the Irish Sea is rather patchy because it is difficult to survey such a large area, where underwater visibility is often poor and information often depends upon looking at material brought up from the seabed in mechanical grabs. However, the groupings of animals present depend to a large extent on whether the seabed is composed of rock, boulders, gravel, sand, mud or even peat. In the soft sediments seven types of community have been provisionally identified, variously dominated by brittle-stars, sea urchins, worms, mussels, tellins, furrow-shells, and tower-shells.
Parts of the bed of the Irish Sea are very rich in wildlife. The seabed southwest of the Isle of Man is particularly noted for its rarities and diversity, as are the horse mussel beds of Strangford Lough. Scallops and queen scallops are found in more gravelly areas. In the estuaries, where the bed is more sandy or muddy, the number of species is smaller but the size of their populations is larger. Brown shrimp, cockles and edible mussels support local fisheries in Morecambe Bay and the Dee Estuary and the estuaries are also important as nurseries for flatfish, herring and sea bass. Muddy seabeds in deeper waters are home to populations of the Dublin Bay prawn, also known as "scampi".
The open sea is a complex habitat in its own right. It exists in three spatial dimensions and also varies over time and tide. For example, where freshwater flows into the Irish Sea in river estuaries its influence can extend far offshore as the freshwater is lighter and "floats" on top of the much larger body of saltwater until wind and temperature changes mix it in. Similarly, warmer water is less dense and seawater warmed in the inter-tidal zone may "float" on the colder offshore water. The amount of light penetrating the seawater also varies with depth and turbidity. This leads to differing populations of plankton in different parts of the sea and varying communities of animals that feed on these populations. However, increasing seasonal storminess leads to greater mixing of water and tends to break down these divisions, which are more apparent when the weather is calm for long periods.
Plankton includes bacteria, plants (phytoplankton) and animals (zooplankton) that drift in the sea. Most are microscopic, but some, such as the various species of jellyfish and sea gooseberry, can be much bigger.
Diatoms and dinoflagellates dominate the phytoplankton. Although they are microscopic plants, diatoms have hard shells and dinoflagellates have little tails that propel them through the water. Phytoplankton populations in the Irish Sea have a spring "bloom" every April and May, when the seawater is generally at its greenest.
Crustaceans, especially copepods, dominate the zooplankton. However, many animals of the seabed, the open sea and the seashore spend their juvenile stages as part of the zooplankton. The whole plankton "soup" is vitally important, directly or indirectly, as a food source for most species in the Irish Sea, even the largest. The enormous basking shark, for example, lives entirely on plankton and the leatherback turtle's main food is jellyfish.
A colossal diversity of invertebrate species live in the Irish Sea and its surrounding coastline, ranging from flower-like fan-worms to predatory swimming crabs to large chameleon-like cuttlefish. Some of the most significant for other wildlife are the reef-building species like the inshore horse mussel of Strangford Lough and the inter-tidal honeycomb worm of Morecambe Bay, Cumbria and Lancashire. These build up large structures over many years and, in turn, provide surfaces, nooks and crannies where other marine animals and plants may become established and live out some or all of their lives.
There are quite regular records of live and stranded leatherback turtle in and around the Irish Sea. This species travels north to the waters off the British Isles every year following the swarms of jellyfish that form its prey. Loggerhead turtle, Ridley sea turtle and green turtle are found very occasionally in the Irish Sea but are generally unwell or dead when discovered. They have strayed or been swept out of their natural range further south into colder waters.
The estuaries of the Irish Sea are of international importance for birds. They are vital feeding grounds on migration flyways for shorebirds travelling between the Arctic and Africa. Others depend on the milder climate as a refuge when continental Europe is in the grip of winter.
Twenty-one species of seabird are reported as regularly nesting on beaches or cliffs around the Irish Sea. Huge populations of the sea duck, common scoter, spend winters feeding in shallow waters off eastern Ireland, Lancashire and North Wales.
Whales, dolphins and porpoises all frequent the Irish Sea, but knowledge of how many there may be and where they go is somewhat sketchy. About a dozen species have been recorded since 1980, but only three are seen fairly often. These are the harbour porpoise, bottlenose dolphin and common dolphin. The more rarely seen species are minke whale, fin whale, sei whale, humpback whale, North Atlantic Right Whales which are now considered to be almost extinct in eastern North Atlantic, sperm whale, northern bottlenose whale, long-finned pilot whale, orca, white-beaked dolphin, striped dolphin and Risso's dolphin. In 2005, a plan to reintroduce grey whales by airlifting 50 of them from the Pacific Ocean to the Irish Sea was claimed to be logically and ethically feasible; it had not been implemented by 2013.
The common or harbour seal and the grey seal are both resident in the Irish Sea. Common seals breed in Strangford Lough, grey seals in southwest Wales and, in small numbers, on the Isle of Man. Grey seals haul out, but do not breed, off Hilbre and Walney islands, Merseyside, the Wirral, St Annes, Barrow-in-Furness Borough, and Cumbria.
The Irish Sea has been described by Greenpeace as the most radioactively contaminated sea in the world with some "eight million litres of nuclear waste" discharged into it each day from Sellafield reprocessing plants, contaminating seawater, sediments and marine life.
Low-level radioactive waste has been discharged into the Irish Sea as part of operations at Sellafield since 1952. The rate of discharge began to accelerate in the mid- to late 1960s, reaching a peak in the 1970s and generally declining significantly since then. As an example of this profile, discharges of plutonium (specifically 241Pu) peaked in 1973 at 2,755 terabecquerels (74,500 Ci) falling to 8.1 TBq (220 Ci) by 2004. Improvements in the treatment of waste in 1985 and 1994 resulted in further reductions in radioactive waste discharge although the subsequent processing of a backlog resulted in increased discharges of certain types of radioactive waste. Discharges of technetium in particular rose from 6.1 TBq (160 Ci) in 1993 to a peak of 192 TBq (5,200 Ci) in 1995 before dropping back to 14 TBq (380 Ci) in 2004. In total 22 petabecquerels (590 kCi) of 241Pu was discharged over the period 1952 to 1998. Current rates of discharge for many radionuclides are at least 100 times lower than they were in the 1970s.
Analysis of the distribution of radioactive contamination after discharge reveals that mean sea currents result in much of the more soluble elements such as caesium being flushed out of the Irish Sea through the North Channel about a year after discharge. Measurements of technetium concentrations post-1994 has produced estimated transit times to the North Channel of around six months with peak concentrations off the northeast Irish coast occurring 18–24 months after peak discharge. Less soluble elements such as plutonium are subject to much slower redistribution. Whilst concentrations have declined in line with the reduction in discharges they are markedly higher in the eastern Irish Sea compared to the western areas. The dispersal of these elements is closely associated with sediment activity, with muddy deposits on the seabed acting as sinks, soaking up an estimated 200 kg (440 lb) of plutonium. The highest concentration is found in the eastern Irish Sea in sediment banks lying parallel to the Cumbrian coast. This area acts as a significant source of wider contamination as radionuclides are dissolved once again. Studies have revealed that 80% of current sea water contamination by caesium is sourced from sediment banks, whilst plutonium levels in the western sediment banks between the Isle of Man and the Irish coast are being maintained by contamination redistributed from the eastern sediment banks.
The consumption of seafood harvested from the Irish Sea is the main pathway for exposure of humans to radioactivity. The environmental monitoring report for the period 2003 to 2005 published by the Radiological Protection Institute of Ireland (RPII) reported that in 2005 average quantities of radioactive contamination found in seafood ranged from less than 1 Bq/kg (12 pCi/lb) for fish to under 44 Bq/kg (540 pCi/lb) for mussels. Doses of man-made radioactivity received by the heaviest consumers of seafood in Ireland in 2005 was 1.10 μSv (0.000110 rem). This compares with a corresponding dosage of radioactivity naturally occurring in the seafood consumed by this group of 148 μSv (0.0148 rem) and a total average dosage in Ireland from all sources of 3,620 μSv (0.362 rem). In terms of risk to this group, heavy consumption of seafood generates a 1 in 18 million chance of causing cancer. The general risk of contracting cancer in Ireland is 1 in 522. In the UK, the heaviest seafood consumers in Cumbria received a radioactive dosage attributable to Sellafield discharges of 220 μSv (0.022 rem) in 2005. This compares to average annual dose of naturally sourced radiation received in the UK of 2,230 μSv (0.223 rem).
Discussions of linking Britain to Ireland began in 1895, with an application for £15,000 towards the cost of carrying out borings and soundings in the North Channel to see if a tunnel between Ireland and Scotland was viable. Sixty years later, Harford Montgomery Hyde, Unionist MP for North Belfast, called for the building of such a tunnel. A tunnel project has been discussed several times in the Irish parliament. The idea for a 21-mile (34 km) long rail bridge or tunnel continues to be mooted. Several potential projects have been proposed, including one between Dublin and Holyhead put forward in 1997 by the British engineering firm Symonds. At 50 miles (80 km), it would have been by far the longest rail tunnel on earth with an estimated cost approaching £20 billion.
An offshore wind farm was developed on the Arklow Bank, Arklow Bank Wind Park, about 10 km (6.2 mi) off the coast of County Wicklow in the south Irish Sea. The site currently has seven GE 3.6 MW turbines, each with 104-metre (341 ft) diameter rotors, the world's first commercial application of offshore wind turbines over three megawatts in size. The operating company, Airtricity, has indefinite plans for nearly 100 further turbines on the site.
Further wind turbine sites include:
The Barrow Offshore Wind Farm is a 30 turbine 90MW capacity offshore wind farm in the East Irish Sea approximately 7 kilometres (4.3 mi) south west of Walney Island, near Barrow-in-Furness, Cumbria, England.
Construction of the wind farm took place between 2005 and 2006. The farm is operated by Barrow Offshore Wind Limited, owned by Dong Energy.Caernarfon Bay
Caernarfon Bay (occasionally Caernarvon Bay) is an inlet of the Irish Sea defined by the Llŷn peninsula and Anglesey.
The gentle coastline surrounding it is home to villages including Nefyn, Trefor, and Clynnog Fawr on the mainland, and Aberffraw, Llanddwyn and Rhosneigr on Anglesey.
The Menai Strait heads north east to link the bay to Conwy Bay.Cardigan Bay
Cardigan Bay (Welsh: Bae Ceredigion) is a large inlet of the Irish Sea, indenting the west coast of Wales between Bardsey Island, Gwynedd in the north, and Strumble Head, Pembrokeshire at its southern end. It is the largest bay in Wales.Dublin Bay
Dublin Bay (Irish: Cuan Bhaile Átha Cliath) is a C-shaped inlet of the Irish Sea on the east coast of Ireland. The bay is about 10 kilometres wide along its north-south base, and 7 km in length to its apex at the centre of the city of Dublin; stretching from Howth Head in the north to Dalkey Point in the south. North Bull Island is situated in the northwest part of the bay, where one of two major inshore sand banks lay, and features a 5 km long sandy beach, Dollymount Strand, fronting an internationally recognised wildfowl reserve. Many of the rivers of Dublin reach the Irish Sea at Dublin Bay: the River Liffey, with the River Dodder flow received less than 1 km inland, River Tolka, and various smaller rivers and streams.
The metropolitan area of the city of Dublin surrounds three sides of the bay (the north, west, and south), while the Irish Sea lies to the east. Dublin was founded by the Vikings at the point where they were able to ford the River Liffey with the first wattle bridge up from the estuary. The city spread from its birthplace, around what is now the James's Gate area, out along the coastline, northeast towards Howth and southeast towards Dalkey.
UNESCO has designated Dublin Bay a 'biosphere reserve' in recognition of its unique ecological habitat and biological diversity.Dyfed
Dyfed (Welsh pronunciation: ['dəvɛd]) is a preserved county of Wales. It was created on 1 April 1974, as an amalgamation of the three pre-existing counties of Cardiganshire, Carmarthenshire and Pembrokeshire. It was abolished twenty-two years later, on 1 April 1996, when the three original counties were reinstated, Cardiganshire being renamed Ceredigion the following day. The name "Dyfed" is retained for certain ceremonial and other purposes. It is a mostly rural county in southwestern Wales with a coastline on the Irish Sea and the Bristol Channel.East–West Interconnector
The East–West Interconnector is a 500 MW high-voltage direct current submarine and subsoil power cable which connects the Irish and British electricity markets. The project has been developed by the Irish national grid operator EirGrid.German submarine U-1024
German submarine U-1024 was a Type VIIC/41 U-boat built for Nazi Germany's Kriegsmarine for service during World War II.
She was laid down on 20 May 1943 by Blohm & Voss, Hamburg as yard number 224, launched on 3 May 1944 and commissioned on 28 June 1944 under Kapitänleutnant Hans-Joachim Gutteck.German submarine U-1051
German submarine U-1051 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II.
She was laid down on 8 February 1943 by Friedrich Krupp Germaniawerft, Kiel as yard number 685, launched on 3 February 1944 and commissioned on 4 March 1944 under Oberleutnant zur See Heinrich von Holleben.HSC Express
HSC Express is a 91-metre (299 ft) wave piercing catamaran built by Incat, owned by Nordic HSC and chartered to Viking Line, from 10 April 2017 she is due to sail between Helsinki and Tallinn. During her delivery voyage on 9 June 1998, as Catalonia, she set the record for the fastest Atlantic Eastbound Record, previously held by another Incat craft Hoverspeed Great Britain. She made the 3,125 mi (5,029 km) run from Manhattan to Tarifa, Spain in 3 days 7 hours 54 minutes, traveling at an average speed of 38.877 knots (72.000 km/h; 44.739 mph).
During that same voyage, the ship became the first passenger ship to cover 1,000 mi (1,600 km) or more in one 24-hour period. In covering 1,018 nautical miles (1,885 km) in one day, beating the 868 mi (1,397 km). record set by SS United States in 1952. Six weeks later, sister craft HSC Fjord Cat took the record.
As of January 2016 P&O announced that they would end the Larne-Troon service provided by HSC Express, this has ended 25 years of fastcraft service between Northern Ireland and Scotland.Heysham
Heysham ( (listen) HEE-shəm) is a large coastal village in Lancashire, England, overlooking Morecambe Bay. It is a ferry port, with services to the Isle of Man and Ireland, and the site of two nuclear power stations.Innisfallen
There have been five ships named Innisfallen. They served on the Irish Sea route between Cork and Fishguard. The first two were war casualties. The third was broken up. The final two (which have been renamed) are still in service, albeit in warmer waters.
An earlier ship named Innisfallen was built at Blyth, Northumberland, England, in about 1863. She sank with the loss of eight lives in the English Channel in the vicinity of the Goodwin Sands in a storm at the end of November 1897, on a voyage from South Shields to Cowes. She was carrying a cargo of gascoal when she sank.Liverpool Bay
Liverpool Bay is a bay of the Irish Sea between northeast Wales, Cheshire, Lancashire and Merseyside to the east of the Irish Sea. The bay is a classic example of a region of freshwater influence. Liverpool Bay has historically suffered from reduced oxygen content from prior massive discharges of sewage sludge, according to C.Michael Hogan.The rivers Alt, Clwyd, Dee, Ribble and Mersey drain into the bay. The bay is littered with wrecks and has many dive sites. The bay also contains several oil and gas fields including the Douglas Complex, with a combined daily capacity (January 2008) of 60,000 barrels. The UK's first major offshore wind farm, North Hoyle, is located in the south of the bay, which is a busy shipping route to the Mersey Docks.
The land area around the bay is occasionally referred to as the "Liverpool Bay Area". Though the term is seen by some as a possible official alternative to Merseyside, it is more often used to describe a much wider area which may include the West Lancashire towns of Ormskirk and Skelmersdale to the north, St Helens and Warrington to the east and Chester plus North Wales to the south. In this sense, it is often promoted by local thinkers and urbanists to encourage regional co-operation in both economic and cultural terms. It is not recognised by the British Government as a strategic economic sub-region, however. Despite having its advocates, the term is still not particularly common in the area.
The English portion of Liverpool Bay is one of the 120 natural areas into which England is divided by Natural England for conservation purposes.Ormonde Wind Farm
The Ormonde Wind Farm is a wind farm west of Barrow-in-Furness in the Irish Sea. The wind farm covers an area of 8.7 square kilometres (3.4 sq mi). It has a total capacity of 150 MW and is expected to produce around 500 GWh of electricity per year.Point of Ayr Gas Terminal
The Point of Ayr Gas Terminal is a gas terminal situated on the Point of Ayr in Flintshire, Wales. It takes gas from eni's Liverpool Bay Development.Sea Scouts (Scouting Ireland)
Sea Scouting (Irish: Gasógaíacht Mhara) has existed in Ireland since 1912. Currently, all Sea Scout Groups in Ireland are members of the World Organisation of the Scout Movement (WOSM) through Scouting Ireland. Sea Scouting provides Scout training with and through water-borne activities.Solway Firth
The Solway Firth (Scottish Gaelic: Tràchd Romhra) is a firth that forms part of the border between England and Scotland, between Cumbria (including the Solway Plain) and Dumfries and Galloway. It stretches from St Bees Head, just south of Whitehaven in Cumbria, to the Mull of Galloway, on the western end of Dumfries and Galloway. The Isle of Man is also very near to the firth. The firth comprises part of the Irish Sea.
The coastline is characterised by lowland hills and small mountains. It is a mainly rural area with fishing and hill farming (as well as some arable farming) still playing a large part in the local economy, although tourism is increasing. It has also been used for the location of films such as The Wicker Man, which was filmed around Kirkcudbright and Burrow Head on the Wigtownshire coast.
The Solway Coast was designated an Area of Outstanding Natural Beauty in 1964. Construction of Robin Rigg Wind Farm began in the firth in 2007.St George's Channel
St George's Channel (Welsh: Sianel San Siôr, Irish: Muir Bhreatan) is a sea channel connecting the Irish Sea to the north and the Celtic Sea to the southwest.Historically, the name "St George's Channel" was used interchangeably with "Irish Sea" or "Irish Channel" to encompass all the waters between Ireland to the west and Great Britain to the east. Some geographers restricted it to the portion separating Wales from Leinster, sometimes extending south to the waters between the West Country of England and East Munster; the latter have since the 1970s come to be called the Celtic Sea. In Ireland "St George's Channel" is now usually taken to refer only to the narrowest part of the channel, between Carnsore Point in Wexford and St David's Head in Pembrokeshire. However, it remains common in Ireland to talk about a cross-channel trip, cross-channel soccer, etc., where "cross-channel" means "to/from Great Britain".The current (third, 1953) edition of the International Hydrographic Organization's publication Limits of Oceans and Seas defines the southern limit of "Irish Sea and St. George's Channel" as "A line joining St. David's Head (51°54′N 5°19′W) to Carnsore Point (52°10′N 6°22′W)"; it does not define the two waterbodies separately. The 2002 draft fourth edition omits the "and St. George's Channel" part of the label.A 2004 letter from the St.George's Channel Shipping Company to Seascapes, an RTÉ Radio programme, said that St George's Channel bordered the Irish coast between Howth Head and Kilmore Quay, and criticised contributors to the programme who had used "Irish Sea" for these waters.The name "St George's Channel" is recorded in 1578 in Martin Frobisher's record of his second voyage. It is said to derive from a legend that Saint George had voyaged to Roman Britain from the Byzantine Empire, approaching Britain via the channel that bears his name. The name was popularised by English settlers in Ireland after the Plantations.Stena Line
Stena Line is one of the largest ferry operators in the world. It services Denmark, Germany, Ireland, Latvia, the Netherlands, Norway, Poland, Sweden and the United Kingdom, Stena Line is a major unit of Stena AB, itself a part of the Stena Sphere. Stena Line also owns the Swedish vessels of the otherwise German- and Danish-owned Scandlines.West of Duddon Sands Wind Farm
West of Duddon Sands Wind Farm (WoDS), occasionally also known as West Duddon Wind Farm is an offshore wind farm located 14 kilometres (8.7 mi) south west of Walney Island off the coast of Barrow-in-Furness in Cumbria, in the Irish Sea, England. It was developed by Scottish Power and Dong Energy.
Marginal seas of the Atlantic Ocean