This article is about the harbour in England. For the port in Maine, see Port of Portland (Maine). For the port in Oregon, see Port of Portland (Oregon).
Southern and eastern entrances of Portland Harbour looking northeast from the Isle of Portland across Balaclava Bay. The dark colour of the water between the two breakwaters in the foreground indicates the position of the scuttled battleship HMS Hood.The western side of the Harbour with Chesil Beach, Lyme Bay and the Fleet Lagoon in the background.
Portland Harbour is located beside the Isle of Portland, Dorset, on the south coast of England. Construction of the harbour began in 1849; when completed in 1872, its 520-hectare (1,300-acre) surface area made it the largest human-made harbour in the world,[1] and it remains one of the largest in the world today. It is naturally sheltered by Portland to the south, Chesil Beach to the west and mainland Dorset to the north.[2] It consists of four breakwaters: two southern and two northern. These have a total length of 4.57 km (2.84 mi) and enclose approximately 1,000 ha (2,500 acres) of water.
Portland Harbour was built by the Admiralty as a facility for the Royal Navy (though access was also available to merchant ships);[3] on 11 December 1923 it was formally designated HM Naval Base (HMNB) Portland,[4] and continued to serve as such until closure in 1995.
^"BBC: Portland's Breakwater Fort". Archived from the original on 30 April 2023. Retrieved 25 December 2019.
^"Portland Harbour". Engineering timelines. Archived from the original on 2 March 2014. Retrieved 19 March 2016.
^Cite error: The named reference Coad2013 was invoked but never defined (see the help page).
^Cite error: The named reference PortlandHistoryPH was invoked but never defined (see the help page).
PortlandHarbour is located beside the Isle of Portland, Dorset, on the south coast of England. Construction of the harbour began in 1849; when completed...
Mulberry harbours were two temporary portable harbours developed by the British Admiralty and War Office during the Second World War to facilitate the...
still exist in Britain: two are part of the harbour off Castletown at PortlandHarbour in Dorset, and two can be dived in less than 10 metres of water off...
in Osprey Quay on the northern tip of the island, and the waters of PortlandHarbour and Weymouth Bay, adjacent to the site, are the main areas used for...
The Battle of Portland Harbor was an incident during the American Civil War, in June 1863, in the waters off Portland, Maine. Two civilian ships engaged...
to West Bay Chesil Beach, the Fleet Lagoon and the Isle of Portland Coast PortlandHarbour Shore from Bowleaze Cove to Peveril Point from New Swanage...
ocean-going ships joined convoys to transatlantic destinations. On 4 July, PortlandHarbour and the convoy were attacked by Junkers Ju 87 Stuka dive-bombers, followed...
been named HMS Portland, either after PortlandHarbour in Dorset or after holders of the title of the Duke of Portland: HMS Portland (1653) was a 50-gun...
the ingress of attacking enemy forces, as in the case of HMS Hood at PortlandHarbour in 1914; or it may be brought by enemy raiders and used to prevent...
4141°W / 50.5849; -2.4141 The Portland Breakwater Fort is a 19th-century fort, built between 1868-1875 to defend PortlandHarbour, Dorset, England. It is located...
of Southampton, Southampton Cowes Lymington Port of Poole PortlandHarbour Bridport Harbour, Bridport Exmouth Teignmouth Torquay Brixham Dartmouth Plymouth...
HMP Weare was an Adult Male/Category C prison ship berthed in PortlandHarbour in Dorset, England. It was the latest in a lengthy history of British prison...
HMS Sidon (P259) was a S-class submarine launched in 1944. She sank in Portlandharbour in 1955 as a result of an accidental torpedo explosion, was subsequently...
and mud. The Fleet connects to PortlandHarbour at Ferry Bridge. Initially a ferry boat was used to connect Portland to the mainland, until the first...
the late 1840s until 1872, Portland Breakwater was built, a prodigious construction task that created a very large safe harbour. It was decided to provide...
East Weare Camp East Weare Rifle Range PortlandHarbour Weymouth Newton's Cove Nothe Gardens Weymouth Harbour Weymouth Pier including Jurassic Skyline...
from the town of Weymouth, and Weymouth Harbour, into the sea to the north of the ex-military PortlandHarbour. The fort is located next to Nothe Gardens...
most Canadian exporters sent their wares by train though Boston or Portland. Harbour promoters fought an uphill battle to finance the large-scale port...
and Easton; the latter six being on the Isle of Portland. In PortlandHarbour is the Weymouth and Portland National Sailing Academy, where the sailing events...
closed in the 1980s. The similar Portlandharbour tunnel was constructed in 1877 in Portland to link the main harbour with the railway, running under Bentink...
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