Milford Haven (harbour)
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Milford Haven Waterway (''Welsh: Dyfrffordd Aberdaugleddau'') is a natural harbour in Pembrokeshire,
Wales Wales ( cy, Cymru ) is a country that is part of the United Kingdom. It is bordered by England to the east, the Irish Sea to the north and west, the Celtic Sea to the south west and the Bristol Channel to the south. It had a population in ...
. It is a
ria A ria (; gl, ría) is a coastal inlet formed by the partial submergence of an unglaciated river valley. It is a drowned river valley that remains open to the sea. Definitions Typically rias have a dendritic, treelike outline although they ca ...
or drowned valley which was flooded at the end of the last ice age. The Daugleddau
estuary An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and maritime environm ...
winds west to the sea. As one of the deepest natural harbours in the world, it is a busy
shipping channel In physical geography, a channel is a type of landform consisting of the outline of a path of relatively shallow and narrow body of water or of other fluids (e.g., lava), most commonly the confine of a river, river delta or strait. The word is ...
, trafficked by
ferries A ferry is a ship, watercraft or amphibious vehicle used to carry passengers, and sometimes vehicles and cargo, across a body of water. A passenger ferry with many stops, such as in Venice, Italy, is sometimes called a water bus or water tax ...
from Pembroke Dock to Ireland,
oil tanker An oil tanker, also known as a petroleum tanker, is a ship designed for the bulk transport of oil or its products. There are two basic types of oil tankers: crude tankers and product tankers. Crude tankers move large quantities of unrefined cru ...
s and pleasure craft. Admiral Horatio Nelson, visiting the haven with the Hamiltons, described it as the next best natural harbour to
Trincomalee Trincomalee (; ta, திருகோணமலை, translit=Tirukōṇamalai; si, ත්‍රිකුණාමළය, translit= Trikuṇāmaḷaya), also known as Gokanna and Gokarna, is the administrative headquarters of the Trincomalee Dis ...
in Ceylon (today's Sri Lanka ) and "the finest port in Christendom".Wing Commander Ken McKay ''A Vision of Greatness: The History of Milford 1790–1990'', Brace Harvatt Associates, 1989. Much of the coastline of the Waterway is designated as a Site of Special Scientific Interest, listed as Milford Haven Waterway SSSI.


History


Early history

From the 790s until the Norman Invasion in 1066, the waterway was used occasionally by Vikings looking for shelter. During one visit in 854, the Viking Chieftain Hubba wintered in the Haven with 23 ships, eventually lending his name to the district of
Hubberston Hubberston is a coastal village in Pembrokeshire, Wales. It belongs to the parish of Hubberston in the historical hundred of Roose. It is located directly to the west of the larger town of Milford Haven, and is a district of the community of Milfo ...
. Evidence of metal working in the area was recently excavated, suggesting a level of industrialisation in the period 750–1100. A Benedictine priory (
Pill Priory Pill Priory is a Tironian house founded near Milford Haven, Pembrokeshire, South West Wales in the late 12th century. Pill Priory was founded as a daughter house of St Dogmaels Abbey (raised to Abbey status in 1120), near Cardigan, itself a p ...
) was established at the head of Hubberston Pill in 1170, as a daughter house of St Dogmaels Abbey. Built on virgin land, it stood alongside the priory on
Caldey Island Caldey Island ( Welsh:''Ynys Bŷr'') is a small island near Tenby, Pembrokeshire, Wales, less than off the coast. With a recorded history going back over 1,500 years, it is one of the holy islands of Britain. A number of traditions inherited ...
as part of the
Tironian Tironian notes ( la, notae Tironianae, links=no) are a set of thousands of signs that were formerly used in a system of shorthand (Tironian shorthand) dating from the 1st century BCE and named after Tiro, a personal secretary to Marcus Tullius Ci ...
Order in
West Wales West Wales ( cy, Gorllewin Cymru) is not clearly defined as a particular region of Wales. Some definitions of West Wales include only Pembrokeshire, Ceredigion and Carmarthenshire, which historically comprised the Welsh principality of ''Deheub ...
, and was dedicated to
St Budoc Saint Budoc of Dol (also Budeaux or Beuzec) was a Bishop of Dol, venerated after his death as a saint in both Brittany (now in France) and Devon (now in England). Saint Budoc is the patron of Plourin Ploudalmezeau in Finistère where his relics ar ...
. Founded by Adam de Rupe, it stood until the Dissolution under Henry VIII. In 1171 Henry II designated the area the rendezvous for his Irish expedition. An army of 400 warships, 500 knights and 4,000 men-at-arms gathered in the haven before sailing to
Waterford "Waterford remains the untaken city" , mapsize = 220px , pushpin_map = Ireland#Europe , pushpin_map_caption = Location within Ireland##Location within Europe , pushpin_relief = 1 , coordinates ...
, and on to
Dublin Dublin (; , or ) is the capital and largest city of Ireland. On a bay at the mouth of the River Liffey, it is in the province of Leinster, bordered on the south by the Dublin Mountains, a part of the Wicklow Mountains range. At the 2016 c ...
, which marked the first time an English king had stood on Irish soil, and the beginning of Henry's invasion of Ireland. St Thomas a Becket chapel was dedicated in 1180, a structure which looked out over the Haven from the north shore of the town. In later years it was used as a beacon for sailors in foul weather,McKay & Springer. ''Milford Haven Waterway & Town'', Tempus Publishing Ltd, 1999. and ultimately as a pig sty, until it was reconsecrated in the 20th century. In his play, ''
Cymbeline ''Cymbeline'' , also known as ''The Tragedie of Cymbeline'' or ''Cymbeline, King of Britain'', is a play by William Shakespeare set in Ancient Britain () and based on legends that formed part of the Matter of Britain concerning the early Celti ...
'' Act 3, Scene 2 (1611),
Shakespeare William Shakespeare ( 26 April 1564 – 23 April 1616) was an English playwright, poet and actor. He is widely regarded as the greatest writer in the English language and the world's pre-eminent dramatist. He is often called England's natio ...
remarks: By 1590, two forts had been constructed to defend the entrance to the haven.
George Owen of Henllys George Owen of Henllys (1552 – 26 August 1613) was a Welsh antiquarian, author, and naturalist. Early life George Owen was the eldest son born to Elizabeth Herbert and William Owen in Henllys of the parish of Nevern, near Newport, Pembroke ...
, in his ''Description of Penbrokshire'', claimed in 1603 that Milford Haven was the most famous port of Christendom. The area however was a source of anxiety for the Tudor monarchy. Its location meant that it is exposed to attacks from Ireland]; a convenient base from which England could be invaded via Wales. In 1405, the French landed in force having left Brest, France, Brest in July with more than twenty-eight hundred knights and men-at-arms led by
Jean II de Rieux Jean II de Rieux (1342 - 1417) Breton Lord of Rieux, Rochefort and Ancenis, initially in the service of Brittany, but also eventuall a Marshal of France in the service of King Charles VI. He was the great-grandfather of Jean IV de Rieux. Career ...
, the
Marshal of France Marshal of France (french: Maréchal de France, plural ') is a French military distinction, rather than a military rank, that is awarded to generals for exceptional achievements. The title has been awarded since 1185, though briefly abolished ( ...
, to support Owain Glyndŵr's rebellion. In April 1603,
Martin Pring Martin Pring (1580–1626) was an English explorer from Bristol, England who in 1603 at the age of 23 was captain of an expedition to North America to assess commercial potential; he explored areas of present-day Maine, New Hampshire, and Cape Co ...
used the Haven as his departure point for his exploratory voyage to
Virginia Virginia, officially the Commonwealth of Virginia, is a state in the Mid-Atlantic and Southeastern regions of the United States, between the Atlantic Coast and the Appalachian Mountains. The geography and climate of the Commonwealth ar ...
. The land comprising the site of Milford, the Manor of Hubberston and Pill, was acquired by the Barlow family following the dissolution of the monasteries in the mid-16th century. It acquired an additional strategic importance in the 17th century as a
Royalist A royalist supports a particular monarch as head of state for a particular kingdom, or of a particular dynastic claim. In the abstract, this position is royalism. It is distinct from monarchism, which advocates a monarchical system of governm ...
military base.
Charles I Charles I may refer to: Kings and emperors * Charlemagne (742–814), numbered Charles I in the lists of Holy Roman Emperors and French kings * Charles I of Anjou (1226–1285), also king of Albania, Jerusalem, Naples and Sicily * Charles I of ...
ordered a fort to be built at
Pill Pill or The Pill may refer to: Drugs * Pill (pharmacy), referring to anything small for a specific dose of medicine * "The Pill", a general nickname for the combined oral contraceptive pill Film and television * ''The Pill'' (film), a 2011 fil ...
by Royalist forces and completed in 1643 to prevent Parliamentarian forces from landing at
Pembroke Castle Pembroke Castle ( cy, Castell Penfro) is a medieval castle in the centre of Pembroke, Pembrokeshire in Wales. The castle was the original family seat of the Earldom of Pembroke. A Grade I listed building since 1951, it underwent major restorati ...
and to protect Royalist forces landing from Ireland. On 23 February 1644, a Parliamentarian force led by
Rowland Laugharne Major General Rowland Laugharne (1607 – 1675) was a member of the Welsh gentry, and a prominent soldier during the Wars of the Three Kingdoms, in which he fought on both sides. Laugharne began his career as a page to Robert Devereux, 3rd ...
crossed the Haven and landed at Pill. The fort was gunned from both land and water, and a garrison was placed in Steynton church to prevent a
Royalist A royalist supports a particular monarch as head of state for a particular kingdom, or of a particular dynastic claim. In the abstract, this position is royalism. It is distinct from monarchism, which advocates a monarchical system of governm ...
attack from the garrison at
Haverfordwest Haverfordwest (, ; cy, Hwlffordd ) is the county town of Pembrokeshire, Wales, and the most populous urban area in Pembrokeshire with a population of 14,596 in 2011. It is also a community, being the second most populous community in the county, ...
. The fort was eventually surrendered, and quickly taken, along with St Thomas a Becket chapel. Just five years later in 1649 Milford Haven was again the site of Parliamentarian interest when it was chosen as the disembarkation site for
Oliver Cromwell Oliver Cromwell (25 April 15993 September 1658) was an English politician and military officer who is widely regarded as one of the most important statesmen in English history. He came to prominence during the 1639 to 1651 Wars of the Three K ...
's Invasion of Ireland. Cromwell arrived in the Haven on 4 August, meeting
George Monck George Monck, 1st Duke of Albemarle JP KG PC (6 December 1608 – 3 January 1670) was an English soldier, who fought on both sides during the Wars of the Three Kingdoms. A prominent military figure under the Commonwealth, his support was cruc ...
, before Cromwell and over a hundred crafts left for Dublin on 15 August. By the late 18th century, the two creeks which would delimit the future town of Milford's boundaries to the east and west, namely
Hakin Hakin is a coastal village in Pembrokeshire, Wales. It belongs to the parish of Hubberston in the historical hundred of Roose. It is located directly to the west of the larger town of Milford Haven, and is a district of the community of Milford ...
and Castle Pill, were being used as ports for ships to load and unload coal, corn and limestone., A ferry service to Ireland operated from Hakin around the start of the 19th century, although this ceased in the early 19th century. Although surrounding settlements at Steynton, Thornton, Priory, Liddeston and
Hubberston Hubberston is a coastal village in Pembrokeshire, Wales. It belongs to the parish of Hubberston in the historical hundred of Roose. It is located directly to the west of the larger town of Milford Haven, and is a district of the community of Milfo ...
/Hakin were established, they were little more than hamlets. The only man-made structures on the future site of Milford were the medieval chapel, and Summer Hill Farm, and its accompanying cottages.


Landscape and history

Parts of the Haven are within the
Pembrokeshire Coast National Park Pembrokeshire Coast National Park ( cy, Parc Cenedlaethol Arfordir Penfro) is a national park along the Pembrokeshire coast in west Wales. It was established as a National Park in 1952. It is one of three national parks in Wales, the others b ...
. The northern side is within the Preseli Environmentally Sensitive Area. The area includes: Angle Bay, Carew and Cresswell Rivers, Cosheston Pill, Daugleddau, Gann Estuary,
Pembroke River Pembroke River is a short waterway near Pembroke, Pembrokeshire, West Wales. Course Rising at Hogeston Hill, near Manorbier Newton, the river meanders through Lamphey and flows past Pembroke Castle to its confluence with Milford Haven Waterway a ...
, Pwllcrochan Flats and West Williamston Quarries (
Sites of Special Scientific Interest A Site of Special Scientific Interest (SSSI) in Great Britain or an Area of Special Scientific Interest (ASSI) in the Isle of Man and Northern Ireland is a conservation designation denoting a protected area in the United Kingdom and Isle of ...
); and the towns of Carew,
Haverfordwest Haverfordwest (, ; cy, Hwlffordd ) is the county town of Pembrokeshire, Wales, and the most populous urban area in Pembrokeshire with a population of 14,596 in 2011. It is also a community, being the second most populous community in the county, ...
, Llangwm, Milford Haven,
Neyland Neyland is a town and community in Pembrokeshire, Wales, lying on the River Cleddau and the upstream end of the Milford Haven estuary. The Cleddau Bridge carrying the A477 links Pembroke Dock with Neyland. Etymology The name of the town is ...
and Pembroke, and the Pembroke Dock (Royal Dockyard) Conservation Areas. The
littoral The littoral zone or nearshore is the part of a sea, lake, or river that is close to the shore. In coastal ecology, the littoral zone includes the intertidal zone extending from the high water mark (which is rarely inundated), to coastal a ...
landscape of Milford Haven shows evidence of maritime conquest, settlement, commerce, fishing and defence from the 11th century to the 20th century.
Iron Age The Iron Age is the final epoch of the three-age division of the prehistory and protohistory of humanity. It was preceded by the Stone Age ( Paleolithic, Mesolithic, Neolithic) and the Bronze Age ( Chalcolithic). The concept has been mostl ...
promontory forts are sited on several of the headlands at the entrance and along the course of the Haven and the Daugleddau.
Early medieval The Early Middle Ages (or early medieval period), sometimes controversially referred to as the Dark Ages, is typically regarded by historians as lasting from the late 5th or early 6th century to the 10th century. They marked the start of the Mi ...
, Christian and
Viking Vikings ; non, víkingr is the modern name given to seafaring people originally from Scandinavia (present-day Denmark, Norway and Sweden), who from the late 8th to the late 11th centuries raided, pirated, traded and se ...
sites are evidenced by place-names, documentary and epigraphic evidence, such as Early Christian Inscribed Stone monuments. The
Norman conquest The Norman Conquest (or the Conquest) was the 11th-century invasion and occupation of England by an army made up of thousands of Norman, Breton, Flemish, and French troops, all led by the Duke of Normandy, later styled William the Con ...
, achieved by coastally sited castle boroughs, is still obvious at Pembroke, at Haverfordwest, and at Carew. Carew did not develop into a borough, but excavations have shown that a
Dark Age The ''Dark Ages'' is a term for the Early Middle Ages, or occasionally the entire Middle Ages, in Western Europe after the fall of the Western Roman Empire that characterises it as marked by economic, intellectual and cultural decline. The conce ...
stronghold and possible
Romano-British The Romano-British culture arose in Britain under the Roman Empire following the Roman conquest in AD 43 and the creation of the province of Britannia. It arose as a fusion of the imported Roman culture with that of the indigenous Britons, ...
site preceded the Norman castle. Around the start of the 19th century, two new towns were constructed: Milford in 1790 by Sir William Hamilton, and Pembroke Dock in 1802 as the site for a new Royal Naval Dockyard. Both towns have regular planned layouts, both have experienced a history of boom and slump in shipbuilding, fishing and as railheads and ocean terminals. These two towns, which could handle the larger vessels then entering service, concentrated trade that had previously been dispersed at quays, jetties and landing places and small settlements such as
Pennar Penna (also known as Pinakini, Pennar, Penner, Penneru (Telugu), Pennai (Tamil)) is a river of southern India. This is a unique river in world where after originating from Nandi hills, it flows as two different streams, one in North and South ...
, Lawrenny, Landshipping and
Cosheston Cosheston is a village, parish and community in Pembrokeshire, Wales. It is situated on an inlet of the Daugleddau estuary, 3 km north-east of Pembroke. The parish includes the settlement of Bateman's Hill. The northern part of the communi ...
further up river. These small ports served the coal mines of the
Pembrokeshire Coalfield The Pembrokeshire Coalfield in West Wales is one of the smallest British coalfields, but continuously worked from the 14th to 20th centuries. The main coalfield extends across south Pembrokeshire from Saundersfoot on Carmarthen Bay westwards to B ...
located on both shores of the Daugleddau, and also the large limestone quarries at West Williamston. The Daugleddau ports flourished in the 16th, 17th and 18th centuries, but continued to work through the 19th century by changing to using barges to tranship cargoes down river to bigger vessels at the mid-Haven ports. In the late 19th century, concerns about the potential threat posed by the French Navy prompted the construction of a number of
Palmerston Forts The Palmerston Forts are a group of forts and associated structures around the coasts of the United Kingdom and Ireland. The forts were built during the Victorian period on the recommendations of the 1860 Royal Commission on the Defence of the ...
at various strategically important coastal sites, including Milford Haven. Most of the forts are now disused. The late 20th century brought the jetties, oil terminals and shore processing facilities of the oil and power industries. This industry reached its zenith in the 1970s when Middle Eastern supply difficulties forced oil transport to use ocean routes and Very Large Crude Carriers for which the Haven, with its deep waters and westerly position, was particularly suited.


Port

Milford Haven is the largest port in Wales, and the third-largest port in the United Kingdom. Shipping operations in Milford Haven are managed by the independent Milford Haven Port Authority as a trust port. The port authority has responsibility for managing Milford Docks, Milford Marina and Pembroke Port and Ferry Terminal. In 2012, it was announced that the Milford waterway was to be declared an Enterprise Zone by the coalition government, due to its importance to the energy sector.


Petrochemical industry

Milford Haven's association with the petro-chemical industry started with the opening of the first oil terminal and
oil refinery An oil refinery or petroleum refinery is an industrial process plant where petroleum (crude oil) is transformed and refined into useful products such as gasoline (petrol), diesel fuel, asphalt base, fuel oils, heating oil, kerosene, lique ...
in 1960; unfortunately this coincided with a serious oil-spill from ''Esso Portsmouth'', the first
oil tanker An oil tanker, also known as a petroleum tanker, is a ship designed for the bulk transport of oil or its products. There are two basic types of oil tankers: crude tankers and product tankers. Crude tankers move large quantities of unrefined cru ...
to unload there. Since then, there have been numerous spills of varying magnitude, providing the port authority with a great deal of experience. Uniquely at the time, the harbourmaster instituted the principle of cleaning up first and allocating the blame (and the responsibility of paying for it) later. There are two large oil refineries nearby which represent one fifth of the United Kingdom's oil refining capacity. In 1978 the tanker ''
Christos Bitas Christos may refer to: * Jesus of Nazareth * Christ (title), a title for the Jewish Messiah in Christianity * Christos (surname) * Christos (given name) *, a Greek owned, Liberian flagged cargo ship in service 1962-71 See also

* Christ (di ...
'' ran aground off the Haven, spilling a portion of its cargo of oil. In 1984, a serious explosion on a tanker being repaired in the Haven resulted in three fatalities. In 1996, it was the location of the ''
Sea Empress The MV ''Sea Empress'' was a single-hull Suezmax oil tanker that ran aground at the entrance to the Milford Haven harbour on the southwest coast of Wales in February 1996. The ensuing oil spill, Britain's third largest oil spillage and the 12 ...
'' oil spill, initially thought to be one of the most devastating oil tanker disasters the UK has ever seen. In the event, recovery has been surprisingly good, perhaps partly because of the very strong tides. The comparable ''
Torrey Canyon SS ''Torrey Canyon'' was an LR2 Suezmax class oil tanker with a cargo capacity of of crude oil. She ran aground off the western coast of Cornwall, United Kingdom, on 18 March 1967, causing an environmental disaster. At that time she was the ...
'' spill in 1968, a ship which had been heading to Milford Haven, affected shores further south around southern
Cornwall Cornwall (; kw, Kernow ) is a historic county and ceremonial county in South West England. It is recognised as one of the Celtic nations, and is the homeland of the Cornish people. Cornwall is bordered to the north and west by the Atlantic ...
and northern France, was actually far more damaging.


Liquefied natural gas

In light of the dwindling supplies of
North Sea The North Sea lies between Great Britain, Norway, Denmark, Germany, the Netherlands and Belgium. An epeiric sea, epeiric sea on the European continental shelf, it connects to the Atlantic Ocean through the English Channel in the south and the ...
gas, Milford Haven has become home to two new LNG terminals which eventually could provide 25% of the UK's gas requirement. Under construction from 2006, South Hook is based on the former Esso refinery facility, while Dragon LNG is based on a brownfield site of the Gulf oil refinery, now also housing SEMLogistics chemicals. The regasified natural gas is fed through National Grid plc's
South Wales Gas Pipeline The South Wales Gas Pipeline (also known as the Milford Haven pipeline) is the UK's largest high-pressure gas pipeline. The pipeline passing through Wales was built for National Grid plc and links South Hook and Dragon liquefied natural gas (LN ...
to the distribution point at Tirley,
Gloucestershire Gloucestershire ( abbreviated Glos) is a county in South West England. The county comprises part of the Cotswold Hills, part of the flat fertile valley of the River Severn and the entire Forest of Dean. The county town is the city of Gl ...
. The first vessel, the
Q-Flex Q-Flex is a type of ship, specifically a membrane type liquefied natural gas carrier. Technical description Q-Flex vessels are propelled by two slow speed diesel engines, which are claimed to be more efficient and environmentally friendly than t ...
-class '' Tembek'' from
Qatar Qatar (, ; ar, قطر, Qaṭar ; local vernacular pronunciation: ), officially the State of Qatar,) is a country in Western Asia. It occupies the Qatar Peninsula on the northeastern coast of the Arabian Peninsula in the Middle East; it ...
, docked at South Hook on 20 March 2009. The first gas to the Dragon facility was delivered 14 July 2009.


Cruise terminal

The port authority started promoting Pembrokeshire as a cruise destination in 2003 and passenger numbers have steadily increased since then. In July 2008, the first
transatlantic Transatlantic, Trans-Atlantic or TransAtlantic may refer to: Film * Transatlantic Pictures, a film production company from 1948 to 1950 * Transatlantic Enterprises, an American production company in the late 1970s * ''Transatlantic'' (1931 film) ...
liner A low-ionization nuclear emission-line region (LINER) is a type of galactic nucleus that is defined by its spectral line emission. The spectra typically include line emission from weakly ionized or neutral atoms, such as O, O+, N+, and S+. ...
, the Maasdam arrived in Milford Haven.


Town

The town of Milford Haven was founded as a
whaling Whaling is the process of hunting of whales for their usable products such as meat and blubber, which can be turned into a type of oil that became increasingly important in the Industrial Revolution. It was practiced as an organized industr ...
center in the 18th century, and today the town's port is the fourth largest in the United Kingdom in terms of tonnageOne Wales: Connecting the Nation – The Wales Transport Strategy Welsh Assembly Government, April 2008, page 29
Retrieved 17 January 2010
and plays an important role in the United Kingdom's energy sector with several oil refineries and one of the biggest LNG terminals in the world. Milford Haven is the second largest settlement in Pembrokeshire, with a population of 13,100; though its community boundaries make it the most populous in the county, with 13,096 people.Settlement Populations, Pembrokeshire County Council 2001 Census
Retrieved 17 January 2010
As a community, Milford Haven takes in the town of Milford Haven itself and the villages of
Hakin Hakin is a coastal village in Pembrokeshire, Wales. It belongs to the parish of Hubberston in the historical hundred of Roose. It is located directly to the west of the larger town of Milford Haven, and is a district of the community of Milford ...
,
Hubberston Hubberston is a coastal village in Pembrokeshire, Wales. It belongs to the parish of Hubberston in the historical hundred of Roose. It is located directly to the west of the larger town of Milford Haven, and is a district of the community of Milfo ...
,
Liddeston Liddeston is a small coastal village in Pembrokeshire, Wales. It belongs to the Milford North ward of the community of Milford Haven in the historical hundred of Roose. It is located to the north of the town of Milford Haven and the village of ...
, Steynton and Thornton.


Power generation

As a first stage of a
wave power Wave power is the capture of energy of wind waves to do useful work – for example, electricity generation, water desalination, or pumping water. A machine that exploits wave power is a wave energy converter (WEC). Waves are generated by win ...
plant, there will be some testing at West Dale Bay.


Contaminants

Organic and heavy metal chemical pollutants accumulating in variety of species including seaweed
mussels Mussel () is the common name used for members of several families of bivalve molluscs, from saltwater and freshwater habitats. These groups have in common a shell whose outline is elongated and asymmetrical compared with other edible clams, which ...
, bivalves and
worm Worms are many different distantly related bilateral animals that typically have a long cylindrical tube-like body, no limbs, and no eyes (though not always). Worms vary in size from microscopic to over in length for marine polychaete wo ...
s have been measured in Milford Haven Waterway. This together with information on the sediment concentrations have been assessed in order to aid in the evaluation of the environmental quality of the
ria A ria (; gl, ría) is a coastal inlet formed by the partial submergence of an unglaciated river valley. It is a drowned river valley that remains open to the sea. Definitions Typically rias have a dendritic, treelike outline although they ca ...
estuary An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and maritime environm ...
.


References


Further reading

*''Oil pollution in a major oil port'', Capt. G. Dudley, in Ecological Effects of Oil Pollution (ed. E.B.Cowell), Inst. Petroleum, London, 1971.


External links


Milford Haven Port AuthorityBBC Wales: South West: Milford Havenwww.geograph.co.uk : photos of Milford HavenCountryside Council for Wales Historic Landscape Map
{{coord, 51.7, -5.113, display=title Competent harbour authorities Geography of Pembrokeshire Ports and harbours of Wales Transport in Pembrokeshire Milford Haven Bodies of water of Pembrokeshire