Langstone Harbour
Our changing coast - from prehistory to the present day
''For those of us who grew up in Portsmouth the familiar green backdrop of Portsdown and the isolated expanses of Farlington Marsh spreading out at its foot provided welcome escapes from the, then dreary and still bomb-scarred city sprawling over Portsea Island. For me, Farlington Marsh, with its remarkable saltmarsh flora and migrant bird life, became a haven but its fascination grew out of all proportion when one day a local amateur archaeologist, Chris Draper, brought a bag of flints, which he had found on the eroding foreshores of North Binness and Long Island, to one of the evening meetings of volunteers arranged in the local museum.''
---Barry Cunliffe
Introduction
Langstone Harbour encompasses some 23km² and lies between the harbours of Portsmouth and Chichester and, more specifically, between Portsea Island and Hayling Island, on the Solent coast of Hampshire. Human activity within and around the harbour has been recorded from as early as the postglacial period (c. 12-11 kya) onwards. Although it is not like some other UK intertidal zone areas (e.g. Hullbridge Basin; Seven Estuary, etc.), where generalised settlement activities have been detected, the archaeological finds still confirm a series of localised prehistoric activity areas (Allen & Gardiner, 2000: 203)
This area, including the wider Hampshire and West Sussex region, has also been known for its history of salt production and oyster farming. The Domesday Book (https://opendomesday.org/map/) records three salterns around the harbour, and Oyster farming began around 1820 with winkle and clam cultivation probably starting around the same time (Tweed, 2000: 28-29, 50). Old Fish traps are also a part of the physical remains along some of the intertidal mudflats, specifically on the western coast of Hayling Island.
During the Second World War, the harbour was used as a Starfish Decoy site to “decoy” German bombers away from Portsmouth and the naval docklands. The harbour also held importance for the preparations towards D-Day and the sustained invasions of 1944.
Because of the changing coastline and sea-level rise, Langstone Harbour contains a number of islands that sit just above mean high tide, and are part of the inaccessible RSPB Langstone Reserve. During the 1990's a seven-year archaeology project took place recording significant prehistoric activity across these islands. This story map has been based on the archaeological reports and the monograph they produced at the end of the project (Allen & Gardiner, 2000) and continued work by CITiZAN since 2015.


Palaeolithic Findspot
Two Lower Palaeolithic handaxes have been recovered on Hayling Island dating to between 500 and 300 thousand years ago (kya). One was recovered from intertidal mudflats on the west side of the island in 1981 (this point) and another from Fleet, over on Chichester Harbour. There are other archaeological finds dated to the later part of the Palaeolithic period, the Upper Palaeolithic, from Long Island, now stored at Portsmouth Museum. The picture of this point shows some examples of Paleolithic handaxes found elsewhere in Hampshire.

Finds dated from Mesolithic to Bronze Age
Contributions to archaeology and history have never been possible without the love of local people for their heritage. One day, in the 1970s, a local amateur archaeologist, Chris Draper, brought a bag of flints, which he had found on the eroding foreshores of North Binness and Long Island, to one of the evening meetings of volunteers arranged in the local museum. This was the beginnings of continued research and exploration into the prehistory of Langstone Harbour which carries on today.

Iron Age saltwork site
This point is a salt working site. Finds included pot-boilers, sherds, and briquetage, a ceramic-based material used in the production of salt. From the late Iron Age, Langstone was a tidal inlet and a principal activity around its margins was salt production. In common with some of the other harbours of the Solent coast (e.g. Chichester), Langstone is an ideal area for salt production. It is sheltered and there is plenty of low-lying marshes that may be enclosed to make salt pans. Salt production in this area can be traced from at least the Iron Age, through medieval times, till the latter half of the 18th century, when it went into decline, disappearing altogether by the second quarter of the 19th century (Allen & Gardiner, 2000: 83).

Findspot west of Farlington Marshes
Farlington Marshes was initially drained and enclosed in the 18th C. and fully enclosed by a concrete seawall in the 1970s, effectively cutting them off from erosion and depositional processes of the harbour itself.

Romano - British period of Hayling Island
Romano-British finds occur, from the south coast of Langstone, along the Farlington Marshes, North and South Binness Island, Long Island, and west of Hayling Island. Romano-British finds across this area are mainly Roman pottery and some, diagnostically Romano-British briquetage.

Romano British period of Farlington Marshes
In the 1980s, 1st-2nd century pottery sherds, briquetage, burnt flint, and flint tools were found and retained by B Hooper, off Oyster Island; a small island south of Farlington Marshes which is inaccessible today.

Long Island Logboat
In September 2003 a logboat was excavated and raised from the shore of Long Island. Due to the high number of knots in the wood, the boat was thought to have been hollowed from a fast grown, sub-standard oak. The boat was removed and given to the Mary Rose Trust for conservation before being donated to the Portsmouth Museums Service. A radiocarbon date of AD 500 +/- 100 was obtained for the boat, making it one of only two Saxon logboats to be recorded in the Solent (Whitewright, 2010). You can see the logboat on display at the Portsmouth Museum.

Portsea Island Saltwork site
There is a large saltworks noted on this site in 1830, on the east coast of Portsea Island. There are few archaeological records from this Portsea side of the harbour, probably due to increased urban activity along this coast from the early 19th century onwards. A hoard of decorated copper alloy rings and a palstave (type of axe) was found near St James’ Hospital, and occasional finds of Iron Age pottery are reported here. During the Medieval period, salterns situated on the north side of the creek at Great Salterns are probably those also mentioned in the Domesday book from 1086 (Allen & Gardiner, 2000: 40).

The 'Oyster Catcher's House
Oyster Island is a small, roughly circular mound situated off the southern tip of Farlington Marshes. It comprises a small, raised shingle-covered mound, 120m in diameter, joined to Farlington at low tide by a 250m long shingle bar (today inaccessible to the public). It is reported that the island was built up to accommodate the building on it and is therefore, in part, artificial (Bryant, 1967: 8). The so-called Oyster Catcher’s house only remains as a number of wooden posts and a circular structure, that was built on the island in 1819 by the Russel family as part of their oyster business.

Langstone swing-bridge
The swing bridge of 1867, made of wood on massive iron columns, which carried the railway from Langstone to Hayling Island, is a notable feature of the north-eastern corner of the harbour. In 1954 weight restrictions on the road bridge were increased allowing heavy loads to be brought onto the island by train. It also meant bus passengers had to alight, walk across the bridge and re-join the bus on the other side. This continued until 1956 when a stronger road bridge was built. The expense, along with an estimate of £400,000 to rebuild the railway bridge, led to the decision to close the line, with the last public train running on 2nd November 1963.

Graffiti on walls in The Black Hole Fort Cumberland
Adjacent to the current main entrance to the Fort - the larger of two rooms under the stairs to the right was marked on the 1861 plan as ‘The Black Hole’, used for solitary confinement for Royal Marine prisoners. The smaller room under the left-hand stair is also called a Black Hole on the same plan. The prisoners have left evidence of their stays in the form of graffiti – in some cases, they’ve marked off the days as they passed, with closely-grouped scored marks on the brickwork, and the numbers 30, 60, and even 90 appear. More elaborate graffiti appear on the roof of the vault to the left – two-masted ships can be seen and a number of names, including Keenan. To the right there is more deeply-cut graffiti, including “Damn this B Hole”, CPO (Chief Petty Officer) Smith complaining of “Bad Quarters” with the number 32 – for 1832? Lastly, we have “Lord keep (?) my transgressions and take away mine iniquity”, a misquotation from Job 7:21, carved by a Royal Marine.

Brick Sluices
A number of reasonably sized timber structures are distributed around the shoreline of the harbour. Some of these structures are certainly fairly modern, and some are hard to date firmly without funded radiocarbon work. Those timbers were researched and recorded during the seven years project, and their functions are varied. Including fish traps, an oyster farm, remnants of a jetty, and barge guideposts are present as well as a series of undefined timbers.

Glory Hole
An arc of 41 wooden posts up to 40cm high enclosing gravel banks and a small tidal pool. Probably the remains of a small harbour marked on 1st edition OS, now almost completely covered by housing estate to south. The posts are near low tide and form an arc from west to east. These were noted by Allen & Gardiner (2001). There appear to be less posts in 2016 than surveyed by Allen and Gardiner in the late '90's, possibly because of coverage by seaweed or gravel. This is a very low energy environment, so there is little risk from erosion, although pedestrian and small boat use could damage the remaining posts. Building of Eastney Fort rifle ranges shooting over the site would suggest it was disused by c1900.

Sea Lock
This point is the remains of Sea Lock on the Portsea Canal. The sea lock at Eastney Lake is a notable feature in the south-west corner. This lock was part of the ill-fated Portsmouth to Arundel Canal project opened in 1822 but failed to attract much trade. The lock quickly began to leak and was closed in 1927 (Moore, 1984).

Farlington Marshes Starfish Decoy site
Langstone Harbour was used as starfish decoy site to misdirect German bombers away from Portsmouth and the naval docks during the war, as well as being a base for many landing craft and barges before D-Day.

Farlington Control No.2
The remains of Farlington Control No2, a control bunker associated with the nearby Naval Bombing Decoy, Civil Decoy, and Permanent Starfish sites on Farlington Marshes (see record 1459702). This control bunker would have controlled the fires and electric lights that were used to imitate Portsmouth and its harbour and to provide the illusion of the city under attack. This control bunker is still present intact today but heavily vegetated. The remains of another Control Point can be seen on Hayling Island (see the first image of this point, also see https://www.citizan.org.uk/interactive-coastal-map/84610/)

Eroding Anti-aircraft gun emplacement
Eroding Anti-aircraft gun emplacement on Eastney Spit opposite Hayling Island (likely for a 3.7 or 4.2 inch gun). Originally visible from the air in 1946 (Britain from Above) already slipping down the beach due to erosion. Later covered by car-park and has been re-exposed since 2015 and now largely destroyed.

Mulberry Harbour
This point is the remains of a concrete section of Mulberry Harbour. During WWII, Langstone Harbour and Hayling Island were used as sites for the construction of components of the ‘Mulberry Harbours’ – the artificial harbours created by the Allies to enable them to land their forces in Normandy on D-Day.

Modern post alignment
As we already mentioned, there are many timber structural remains along the west coastline of Hayling Island. Most of them have been recorded, but also, new structures located in tidal zone are continuing to be discovered since the 1990s project. This is also one of the most attractive shorelines of this area, and well worth a walk at low-tide.

Uncertain period timbers
The fish traps are much more difficult to date without the use of radiometric techniques such as radiocarbon dating. Lines of stakes along the water’s margin are a common form of net and basket fastenings and parallels are known in many estuaries and harbour locations.

Complex fish trap on the west coast of Hayling Island
Amongst the most intriguing of the harbour’s various timber structures are six lines of timbers that run out into the harbour from the west coast of Hayling Island (timber structures t7, t8, t10, t11, t12, t13 in Allen & Gardiner, 2000). The date of construction of these structures is unknown, as is their function. They are located in a very sheltered part of the harbour. At high tide the water remains shallow, not exceeding 2m depth, this constrains the maximum wave sizes that may occur under stormy conditions. The minimum distance across the mudflats from the relatively deep water of the Langstone Channel to the timber structures is c 800m, and in places reaching distances as much as 1.5km (Allen & Gardiner, 2000: 57).

The Withern
There are several wrecks sunken in the Langstone Harbour. Because of the location of them are inaccessible, only brief information has been introduced here.

The Irishman
The Irishman was a paddle tug which detonated a magnetic mine on May 8th, 1941 and sank (Maritime Archaeology Trust). She sank with the loss of all hands. She now lies badly broken adjacent to an isolated danger market buoy near Sword Point. During the survey of the seven-year project in 1990s, an estimate of the extent of remaining debris was produced although only limited survey was possible in respect of the confused and scattered nature of the site.

Unrecorded hulk
This is a possible post-medical hulk (1540 - 1901) located at the south end of Langstone Harbour, in an area known as The Ketch. Probably pre-dates c. 1850 as the lagoon was created by the revetted construction of a gravel bar extending into the wider harbour to the north. The exposed element included wooden frames, crossbeams, and roved nails. Based on the fieldwork during this writing, there is over one-half of the hulk under vegetation and mud; potentially suggesting good preservation. This shipwreck has not been properly surveyed, and CITiZAN will carry on the measurement work and aim to do a photogrammetry model in the near future.
Allen, M. J., & Gardiner, J. (2000). Our changing coast: a survey of the intertidal archaeology of Langstone Harbour, Hampshire. York: Council for British Archaeology.
Bradley, R. (1992). Roman salt production in Chichester Harbour: rescue excavations at Chidham, West Sussex. Britannia, 23, 27-44.
Briant, R. M., Bates, M. R., Hosfield, R. T., & Wenban-Smith, F. F. (2009). The quaternary of the Solent Basin and West Sussex raised beaches.
Bryant, M. (1967). The flora of Langstone Harbour and Farlington Marshes. Proc. Hampsh. Fld Club archaeol. Soc, 24, 5-13.
Davis, R. J., Hatch, M., Ashton, N., Hosfield, R. and Lewis, S. G. (2016) The Palaeolithic record of Warsash, Hampshire, UK: implications for late Lower and early Middle Palaeolithic occupation history of Southern Britain. Proceedings of the Geologists' Association, 127 (5). pp. 558-574. ISSN0016-7878 doi: https://doi.org/10.1016/j.pgeola.2016.09.00 Available at http://centaur.reading.ac.uk/68003/
Hosfield, R. T., Wenban-Smith, F. F., & Grant, M. J. (2009). Palaeolithic and Mesolithic archaeology of the Solent Basin and western Sussex region: an overview.
Moore, P. (Ed.). (1984). A Guide to the Industrial Archaeology of Hampshire and the Isle of Wight. Southampton University Industrial Archaeology Group.
Pope, M., Wells, C., Scott, B., Maxted, A., Haycon, N., Farr, L. & Blinkhorn, E. (2019). The Upper Palaeolithic and Mesolithic Periods. South East Research Framework Geoarchaeological Desk-Based Assessment.
Satchell, J. (2014). The Wadeway: Investigation of the Medieval Crossing Point from Langstone Village to Hayling Island. Hampshire Studies, 69(1), 131-160.
Seeley, F and Drummond-Murray, J. (2005). Roman Pottery Production in the Walbrook Valley. Excavations at 20–28 Moorgate, City of London, 1998–2000 (MoLAS Monogr 25). London: Museum of London Archaeology Service.
Tweed, R. (2000). A History of Langstone Harbour and its environs in the County of Hampshire. Dido Publications
Whitewright, J., 2010. Hamble River Logboat: Report on Recent Investigations. Hampshire and Wight Trust for Maritime Archaeology 1–11.
Citizan. (2016). SALT WORKING IN CHICHESTER HARBOUR Coun es of Hampshire and West Sussex. (2016). [online] Available at: https://citizan.org.uk/media/medialibrary/2018/01/Chichester_salt_working.pdf [Accessed 31 Jan. 2022].
Portable Antiquities Scheme Website. [online] The Portable Antiquities Scheme. Available at: https://finds.org.uk/.