Port Jackson

Port Jackson, consisting of the waters of Sydney Harbour, Middle Harbour, North Harbour and the Lane Cove and Parramatta Rivers, is the ria or natural harbour of Sydney, New South Wales, Australia. The harbour is an inlet of the Tasman Sea (part of the South Pacific Ocean). It is the location of the Sydney Opera House and Sydney Harbour Bridge. The location of the first European settlement and colony on the Australian mainland, Port Jackson has continued to play a key role in the history and development of Sydney.

Port Jackson
Port Jackson as seen from the air.
LocationSydney, New South Wales, Australia
Coordinates33°51′30″S 151°14′00″E
River sourcesParramatta, Lane Cove, Middle Harbour
Ocean/sea sourcesTasman Sea of the South Pacific Ocean
Basin countriesAustralia
IslandsClark, Shark, Goat, Fort Denison

Port Jackson, in the early days of the colony, was also used as a shorthand for Sydney and its environs. Thus, many botanists, see, e.g, Robert Brown's Prodromus floræ Novæ Hollandiæ et Insulæ Van-Diemen,[1] described their specimens as having been collected at Port Jackson.

Many recreational events are based on or around the harbour itself particularly the Sydney New Year's Eve celebrations and the starting point of the Sydney to Hobart Yacht Race.

The waterways of Port Jackson are managed by the Roads & Maritime Services. Sydney Harbour National Park protects a number of islands and foreshore areas, swimming spots, bushwalking tracks and picnic areas.[2]


The land around Port Jackson was inhabited at the time of the European arrival and colonisation by the Eora clans, including the Gadigal, Cammeraygal, and Wangal. The Gadigal inhabited the land stretching along the south side of Port Jackson from what is now South Head, in an arc west to the present Darling Harbour. The Cammeraygal lived on the northern side of the harbour. The area along the southern banks of the Parramatta River to Rose Hill belonged to the Wangal. The Eora inhabited Port Jackson (Sydney Harbour), south to the Georges River and west to Parramatta.[3]

Cook's secret overland visit

The first recorded European discovery of Sydney Harbour was by Lieutenant James Cook in 1770. Cook named the inlet after Sir George Jackson, one of the Lord Commissioners of the British Admiralty, and Judge Advocate of the Fleet.[4] As the Endeavour sailed past the entrance at Sydney Heads, Cook wrote in his journal "at noon we were...about 2 or 3 miles from the land and abrest of a bay or harbour within there appeared to be a safe anchorage which I called Port Jackson."

No-one on the ship recorded seeing any of the Harbour's many islands. This would have been because their line of sight was blocked by the high promontories of South Head and Bradleys Head that shape its dog-leg entrance.

However, these islands were known to Captain Arthur Phillip, the First Fleet commander, before he departed England in 1787.[5][6]

Seemingly, Cook had seen the main body of the Harbour in 1770 and, on returning home, he had reported his important discovery to the Admiralty.

An explanation of Cook's discovery was first proposed in 2018 in the book Lying for the Admiralty: Captain Cook's Endeavour Voyage.[7] While the Endeavour was anchored in Botany Bay, Cook may have followed one of the ancient Aboriginal tracks that connect Botany Bay to Port Jackson, a distance of some ten kilometres. The Admiralty had ordered Cook to conceal strategically valuable discoveries, so he omitted the main Harbour from his journal and chart.[8]

First Fleet

Eighteen years later, on 21 January 1788, after arriving at Botany Bay, Governor Arthur Phillip took a longboat and two cutters up the coast to sound the entrance and examine Cook's Port Jackson. Phillip first stayed over night at Camp Cove, then moved down the harbour, landing at Sydney Cove and then Manly Cove before returning to Botany Bay on the afternoon of 24 January. Phillip returned to Sydney Cove in HM Armed Tender Supply on 26 January 1788, where he established the first colony in Australia, later to become the city of Sydney. In his first dispatch from the colony back to England, Governor Phillip noted that:[9][10]

...we had the satisfaction of finding the finest harbour in the world, in which a thousand sail of the line may ride in the most perfect security...

Governor Arthur Phillip, 15 May 1788.

Later events

The Great White Fleet, the United States Navy battle fleet, arrived in Port Jackson in August 1908 by order of U.S. President Theodore Roosevelt. From 1938, seaplanes landed in Sydney Harbour on Rose Bay, making this Sydney's first international airport.

Attack on Sydney Harbour

In 1942, to protect Sydney Harbour from a submarine attack, the Sydney Harbour anti-submarine boom net was constructed. It spanned the harbour from Green (Laings) Point, Watsons Bay to the battery at Georges Head, on the other side of the harbour. On the night of 31 May 1942, three Japanese midget submarines entered the harbour, one of which became entangled in the western end of the boom net's central section. Unable to free their submarine, the crew detonated charges, killing themselves in the process. A second midget submarine came to grief in Taylor's Bay, the two crew committing suicide. The third submarine fired two torpedoes at USS Chicago (both missed) before leaving the harbour. In November 2006, this submarine was found off Sydney's Northern Beaches.[11]

The anti-submarine boom net was demolished soon after World War II, and all that remains are the foundations of the old boom net winch house, which can be viewed on Green (Laings) Point, Watsons Bay. Today, the Australian War Memorial has on display a composite of the two midget submarines salvaged from Sydney Harbour.[12][13] The conning tower of one of the midget submarines is on display at the RAN Heritage Centre, Garden Island, Sydney.[14]


Fort Denison is a former penal site and defensive facility occupying a small island located north-east of the Royal Botanic Gardens in Sydney Harbour.

There are fortifications at Sydney Heads and elsewhere, some of which are now heritage listed. The earliest date from the 1830s, and were designed to defend Sydney from seaborn attack or convict uprisings. There are four historical fortifications located between Taronga Zoo and Middle Head, Mosman, they are: the Middle Head Fortifications, the Georges Head Battery, the Lower Georges Heights Commanding Position and a small fort located on Bradleys Head, known as the Bradleys Head Fortification Complex. The forts were built from sandstone quarried on site and consist of various tunnels, underground rooms, open batteries and casemated batteries, shell rooms, gunpowder magazines, barracks and trenches.[15][16]


Geologically, Port Jackson is a drowned river valley, or ria. It is 19 km long with an area of 55 km2. The estuary's volume at high tide is 562 million cubic metres. The perimeter of the estuary is 317 kilometres.

According to the Geographical Names Board of New South Wales, Port Jackson is "a harbour which comprises all the waters within an imaginary line joining North Head and South Head. Within this harbour lies North Harbour, Middle Harbour and Sydney Harbour."[17]

Port Jackson extends westward from the single entrance known as Sydney Heads (North and South Heads) and encompasses all tidal waters within North Harbour, Middle Harbour, Sydney Harbour, Darling Harbour, Parramatta River and Lane Cove River.[18]

The harbour is heavily embayed. The bays on the south side tend to be wide and rounded, whereas those on the north side are generally narrow inlets. Many of these bays include beaches. The Sydney central business district extends from Circular Quay.

A aerial panorama of Sydney Harbour and Darling Harbour with Sydney CBD on 4 January 2019


There are several islands within the harbour, including Shark Island, Clark Island, Fort Denison, Goat Island, Cockatoo Island, Spectacle Island, Snapper Island and Rodd Island. Some other former islands, including Bennelong Island, Garden Island and Berry Island, have subsequently been linked to the shore by land reclamation. Exposed at low tide is Sow and Pigs Reef, a well-known navigation obstacle near the main shipping lane.

Tributaries and waterways

  • Tank Stream was a fresh water course emptying into Sydney Cove. Today it is little more than a storm water drain but originally it was the fresh water supply for the fledgling colony of New South Wales in the late 18th century. It originated from a swamp to the west of present-day Hyde Park and at high tide entered Sydney Cove at the intersection of Bridge and Pitt Streets.
  • Middle Harbour is the northern arm of Port Jackson. It begins as a small creek (Middle Harbour Creek) at St Ives.[19] It joins the main waterway of Port Jackson between the two headlands, Middle Head and Grotto Point Reserve, adjacent to the Sydney Heads.
  • Parramatta River is the western arm of Port Jackson. The river begins at confluence of Toongabbie Creek and Darling Mills Creek west of Parramatta and joins the main waterway of Port Jackson between Greenwich Point, Greenwich, and Robinsons Point, Birchgrove.[20]
  • Lane Cove River rises near Thornleigh and flows generally south for about 15 kilometres (9.3 mi). Its catchment area is approximately 95.4 square kilometres (36.8 sq mi).
  • Tarban Creek, a northern tributary of the Parramatta River, enters Port Jackson at Hunters Hill.
  • Johnstons Creek is located in the inner-western suburbs of Glebe, Annandale, Forest Lodge and Stanmore. It rises in Stanmore and flows in a generally northward direction towards Rozelle Bay. The creek passes beneath the stands of Harold Park Paceway prior to emptying into Rozelle Bay at Bicentennial Park Glebe. Orphan School Creek is a tributary of Johnstons Creek.
  • Duck River is a perennial stream and southern tributary of the Parramatta River.



Port Jackson is bridged from north to south by the Sydney Harbour Bridge, the Gladesville Bridge, the Ryde Bridge, and the Silverwater Bridge.

Other bridges spanning Port Jackson waterways are Pyrmont Bridge spanning Darling Harbour; the Anzac Bridge (formerly known as the Glebe Island Bridge), spanning Blackwattle Bay; the Iron Cove Bridge spanning Iron Cove; the Spit Bridge spanning Middle Harbour; the Roseville Bridge spanning Middle Harbour; the Tarban Creek Bridge spanning Tarban Creek.


A road tunnel, the Sydney Harbour Tunnel passing underneath the Harbour to the east of the bridge was opened in August 1992.

In 2005, 2010 and in 2014 the NSW Government proposed a rail tunnel be constructed to the west of the Sydney Harbour Bridge. Construction of a pair of tunnels as part of the Sydney Metro project was approved in January 2017 and is scheduled to start later in the year.[21]

Cruise ship terminals

Permanent cruise ship terminals are located at the Overseas Passenger Terminal at Circular Quay, Sydney Cove and at the White Bay Cruise Terminal at White Bay. White Bay's evolution to a cruise terminal came with the closure of Darling Harbour terminal to make way for the Barangaroo development.[22]

Other port facilities

White Bay and adjacent Glebe Island have been working ports since the mid-1800s, handling just about everything from timber and paper, coal, sugar and cement to cars and containers. The NSW Government identified both as vital to the City's economy and in March 2013 announced its commitment to maintaining both as working ports as it frees up neighbouring bays for public access. Glebe Island is Sydney's last remaining deepwater port able to supply the City's ongoing demand for dry bulk goods such as sugar, gypsum and cement.[22]

Maritime transport

Sydney Ferries operate services from Circular Quay to Manly, Mosman, Taronga Zoo, Watsons Bay, Rose Bay, Barangaroo, Balmain, Parramatta, Milsons Point and other destinations.

Water taxi and water limousine operators offer transport not restricted by timetables or specific routes, and can also provide a service to or from private wharfs and houses on the waterfront. Sightseeing harbour cruises are operated daily from Circular Quay. Whale watching excursions are also operated from Port Jackson.

The Mortlake Ferry, also known as the Putney Punt, crosses the Parramatta River, connecting Mortlake and Putney.

Maritime heritage

Australian National Maritime Museum, at Darling Harbour, has themed exhibitions ranging from Indigenous lore and European seafaring to aquatic sport and maritime defence.[23]

Sydney Heritage Fleet is a largely volunteer organisation dedicated to the restoration and operation of heritage vessels. The barque James Craig of the SHF sails regularly from Port Jackson.[24]

RAN Heritage Centre at Garden Island has many exhibits, artefacts and documents relating to the history of the Royal Australian Navy.[14]

Port Jackson is associated with the voyages of Richard Siddins.

Heritage listings

Port Jackson has a number of heritage-listed sites, including:

Derivative unit of measure

A Sydharb is a unit of volume used in Australia for water. One sydharb (or sydarb), also called a Sydney Harbour, is the amount of water in the Sydney Harbour (Port Jackson): approximately 500 gigalitres (410,000 acre⋅ft).[29]

See also


  1. Brown, Robert. Prodromus floræ Novæ Hollandiæ et Insulæ Van-Diemen : exhibens characteres plantarum quas annis 1802-1805 /. Londini :: typis R. Taylor et socii,.CS1 maint: extra punctuation (link)
  2. "Sydney Harbour National Park". NSW National Parks.
  3. Woollarawarre Bennelong quoted by Governor Arthur Phillip in a despatch to Lord Sydney, 13 February 1790 CO201/5, National Archives, Kew (London)
  4. McDermott, Peter Joseph (6 November 1878). "Pacific Exploration". The Brisbane Courier. Brisbane Newspaper Company Ltd. p. 5. Retrieved 5 November 2008.
  5. Phillip, Arthur (11 April 1787). Comments on a draft of his instructions. TNA CO 201/2, f.128–131.
  6. Frost, Alan (1987). Arthur Phillip, 1738–1814: His Voyaging. Melbourne: Oxford University Press. p. 296, n.3. ISBN 0195547012.
  7. Cameron-Asn, M. (2018). Lying for the Admiralty:Captain Cook's Endeavour Voyage. Sydney: Rosenberg. ISBN 9780648043966.
  8. Cameron-Asn, M. (2018). Lying for the Admiralty:Captain Cook's Endeavour Voyage. Sydney: Rosenberg. pp. 167–175. ISBN 9780648043966.
  9. Champion, Shelagh; Champion, George (1990). "Phillip's First Three Days in Port Jackson: 21st, 22nd and 23rd January 1788". Manly, Warringah and Pittwater: First Fleet Records of Events, 1788–1790 (September 2005 revised ed.). Killarney Heights. ISBN 0-9596484-3-7. Archived from the original (PDF) on 10 July 2017.
  10. "Letter from Governor Phillip to Lord Sydney (15 May 1788)". Historical Records of New South Wales. Vol 1, Part 2 (1783–1792). Charles Potter, Government Printer. 1892. p. 122.
  11. Office of Environment and Heritage. "M24 Japanese Midget Submarine wreck site". State Heritage Inventory Database. Retrieved 28 October 2018.
  12. NPWS plaque
  13. Grose, Peter (2007). A Very Rude Awakening: The night the Japanese midget subs came to Sydney Harbour. Allen & Unwin. ISBN 9781741752199.
  14. Royal Australian Navy. "RAN Heritage Centre". Retrieved 28 October 2018.
  15. "DECC – Defence heritage in and around Sydney Harbour".
  16. "heritage.nsw.gov.au".
  17. "Port Jackson". Geographical Names Register (GNR) of NSW. Geographical Names Board of New South Wales. Retrieved 3 August 2013.
  18. RAN Hydrographic Services Map of Port Jackson published in August 1972.
  19. UBD Citylink Street Directory Page 155 Map reference F4
  20. UBD City Link Street Directory Page191 Map Reference A12
  21. McNab, Heather (11 January 2017). "Twin tunnels under Sydney Harbour given green light for metro project". Daily Telegraph. News Corp. Retrieved 18 January 2017.
  22. "Sydney Ports".
  23. Australian National Maritime Museum www.anmm.gov.au
  24. Sydney Heritage Fleet
  25. "Fort Denison". New South Wales State Heritage Register. Office of Environment and Heritage. H00985. Retrieved 18 May 2018.
  26. "Goat Island". New South Wales State Heritage Register. Office of Environment and Heritage. H00989. Retrieved 18 May 2018.
  27. "South Steyne (S.S.)". New South Wales State Heritage Register. Office of Environment and Heritage. H00755. Retrieved 18 May 2018.
  28. "Bradleys Head Light Tower". New South Wales State Heritage Register. Office of Environment and Heritage. H01430. Retrieved 18 May 2018.
  29. "Australian Conventional Units of Measurement in Water" (PDF). Australian Water Association. Archived from the original (PDF) on 30 October 2005. Retrieved 10 March 2006.
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