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Harbour Trust: PlanningThe Plan: Cockatoo Island (Wariea-mah)The Site and Its ContextThe PlaceRefer to Figure
5.1 (PDF, 92kb Cockatoo is the largest of the Sydney Harbour islands. Its history is a rich mix of convict, penal, social reform and maritime industry. The island lies at the junction of the Parramatta and Lane Cove Rivers - 'Moocooboola'. The courtyard cluster of prison barracks, the water towers, workshops and houses all sit atop the hill, like an acropolis of sheer-sided sandstone, quarried to make the flat aprons for maritime industry. An enormous complex of industrial workshops, cranes and a powerhouse furnish the island. This is a place of cuttings - two magnificent docks lying nose-to-nose, rail tracks, slipways, tunnels and grain silos carved by hand into the top of the sandstone hill. The island has been vacant since 1992 and many of the buildings have deteriorated. Some areas also contain contamination and industrial hazards from over a century of shipbuilding activity. How the place evolvedRefer to Figure
5.2 (PDF, 158kb Natural ForcesThis largest harbour island dominates a special triangular space bounded by Balmain, Drummoyne, Hunters Hill, Woolwich and Greenwich, with the other two smaller knolls of Spectacle and Snapper Islands nearby. The landform is distinctive as a drowned knoll (with Spectacle and Snapper) at the end of the ridge following Lyons Road, Drummoyne. The knoll rises to a height of about eighteen metres above sea level and the sandstone geology is similar to the Woolwich and Drummoyne peninsulas. Originally only 12.9 hectares in size, the island has been expanded over the years to 17.9 hectares through extensive cutting and filling forming extensive aprons at the lower levels. A variety of woodland vegetation and shrubs would have once covered the rocky knoll, and almost all have been removed. Some plants grow on the cliff faces and cultural plantings have occurred in many areas. The deserted island has a nesting ground for seagulls and fig trees provide a food source for bats. Cultural HistoryIndigenous Convict From 1839-40 convict labour was used to cut deep into the rock and construct silos for storing the colony's grain supply. Quarrying on the island provided stone for a group of penal buildings on the island and for construction projects around Sydney, including the wall for semi-Circular Quay. Prisoners built the large Fitzroy Dock and the machine shop from 1851 to 1857. The stone remains of the machine shop are now embedded in later industrial buildings on the island. In 1864 the administration of the island was split between the NSW Department of Prisons and the Public Works Department who took over and expanded the dockyard around the foreshores. Industrial School and Reformatory DockyardSutherland Dock, the second of the dry docks, was completed in 1890. For a short time it was the largest in the world. Shipbuilding and repair activities on the island expanded steadily. The island became the Commonwealth Naval Dockyard in 1913 and the first steel warship built in Australia, HMAS Huon, was completed there in 1916 along with her sister ship Torrens and the cruiser Brisbane. A new power station with a fine brick chimney was completed in 1919. In 1933 the shipbuilding and repair facilities were leased to a private company, Cockatoo Docks and Engineering Co. Following the fall of Singapore during the early part of World War II the island became the major shipbuilding and dockyard facility in the Pacific. Repairs and refits included work on the Queen Mary, Queen Elizabeth and major vessels of the Australian and US Navies. Two tunnels were constructed under the plateau of Cockatoo Island in addition to the central one (circa 1912) and a new road provided access to the upper level. Vickers Ltd took over Cockatoo Docks and Engineering Co Pty Ltd in 1947. Additional buildings were constructed during the 1950s and 1970s. The maintenance and refit program for O-class submarines commenced on Cockatoo Island in 1968 and continued until 1991. Following a review of naval dockyard requirements during the early 1980s, the Commonwealth Government decided that the lease of the dockyard would not be renewed after its expiry in 1992. Control of the island reverted to the Commonwealth Government at the end of 1992. A significant amount of plant and machinery was sold and some 40 buildings demolished during 1991. A number of wharves were also removed because of their condition. Site Conditions SummaryFlora and FaunaAlmost all of the island's original vegetation and habitat has been removed to make way for development. However, the sandstone knoll of Cockatoo Island would have once been covered in a variety of woodland vegetation and shrubs. It would have been an unusual mixture of species due to an absence of fire, isolation, the lack of a reliable source of fresh water and the strong marine influence. It is unlikely that the island would have had a high diversity of species when compared to the mainland. Today, some ferns, mosses and hardy shrubs grow between layers of rock on the cliff faces. The undulating plateau and northern slopes have many exotic species including large Moreton Bay Figs and Camphor Laurel trees. There is no evidence of permanent streams and water troughs and tanks were cut into the rock. There are no known threatened species on the island. However, two trees that are listed as vulnerable in the NSW Threatened Species Conservation Act, 1995, were identified: the Magenta Lillypilly (Syzygium paniculatum) and Narrow-leaved Black Peppermint (Eucalyptus nicholii). Both of these specimens have been planted. Of special note is the relatively high number of ferns and fern allies (10) growing in areas of reliable seepage on the exposed rock faces. These include the uncommon Skeleton Fork Fern (Psilotum nudum) and Slender Club Moss (Lycopodium laterale). The island does not provide much habitat for native fauna. The lower level of the island supports few trees and consists mostly of introduced grass species on the northern and eastern sides. These grassed areas provide some foraging habitat for birds such as the Masked Lapwing, the White-faced Heron and Common Starling. The plateau area provides slightly better feeding and shelter areas. The Moreton Bay (Ficus macrophylla) and Port Jackson (Ficus rubiginosa) fig trees on the northern slopes of the island provide a food source for the vulnerable species - the Grey-headed Flying-fox (Pteropus poliocephalus). The tunnels running through the sandstone knoll is suitable habitat for bat species however, no micro-bats have been detected. The rocky foreshore provides habitat for water rats (Hydromys chrysogaster) and a wide variety of marine animals and plants while the armour rock wall on the northern side of the island and the cliff areas around the convict buildings have become popular nesting grounds for Silver Gulls (Larus novaehollandiae). Baseline flora and fauna surveys have been prepared for the island - see report prepared by GIS Environmental Consultants. Buildings and ServicesThere are eighty buildings on Cockatoo Island with examples surviving from each era of the island's history. The range of functional and constructional types includes:
The current condition of the buildings and other structures on Cockatoo Island can be gauged by the fact that the island has been disused since 1992. There has been no maintenance of any description carried out until the Trust began undertaking repair and stabilisation works in 2001. The decision to close the dockyard was taken in 1987 and it is assumed that regular maintenance of buildings was wound down during the final years of operation. The convict era buildings are structurally sound and require some maintenance and restoration works in keeping with their heritage significance. Most of the industrial buildings, constructed using steel, masonry and timber in combination with steel or timber cladding, are structurally sound. The houses, constructed of sandstone or brick masonry with timber used for verandahs, roof and floor structures and some cladding, are also structurally sound and in relatively good condition. The island's wharves and many of the cranes will require significant structural repair and conservation work. The island's water reticulation is in reasonably good condition and currently supplies water to virtually all buildings and apron areas. The sewerage system and electricity networks are outdated and will require a major overhaul. Stormwater and fire systems will also require repairs to bring them up to standard. A more detailed summary of the site conditions is at Section 12 ContaminationCockatoo Island has a rich history that includes over 160 years of development, engineering and shipbuilding activity. Understanding this history provides a key to understanding the environmental condition of the island. Contamination on the island has resulted from the previous filling and waste disposal practices as well as the spillage and release of chemicals and materials that may have occurred on site. Consequently, various types of contaminants exist in soils, surface-water, groundwater and near shore sediments. Hazardous materials are also associated with the various buildings and structures that remain. Examples of the range of contaminants on and around Cockatoo Island are listed below:
A more detailed summary of the Contamination Condition and priorities for remediation is in Section 12, Background Material. The Planning ContextCockatoo Island is unincorporated. This means that it does not fall within any Local Government area. However, it has a visual and historic relationship with surrounding islands (Spectacle Island and Snapper Island) and the land-based Local Government areas of (Leichhardt, Canada Bay and Hunters Hill). The southern apron of Cockatoo Island faces the foreshore area of Canada Bay and Leichhardt. These areas are generally zoned for medium to high-density residential development. Potential impacts such as noise and visual amenity will need to be carefully considered with regard to future waterfront industry on Cockatoo Island. The northern apron of the island faces Hunters Hill. The areas of Hunters Hill most visible from Cockatoo Island are open space, with a number of low-density residential developments. At present there are no public transport services to the island. However, a number of ferry services pass the island each day and have the potential to include Cockatoo Island as a stop. State plans nominate Cockatoo Island as part of the 'Working Waterfront' and as an opportunity for open space and water-based access. State departments and the Trust have identified potential sites for land-based facilities for servicing the harbour's islands, particularly in relation to heavy materials and storage, as an important part of Working Harbour. More detailed information on these matters can be found in Section 12 - Background Material. Consultation Outcomes SummaryDuring consultation it became evident that the history of Cockatoo Island is very important to the community. This includes all aspects of its history from Aboriginal to convict and maritime history. Issues that were highlighted for consideration included the need to identify the contaminated areas of the island and to develop a program of remediation and the need to study the Aboriginal heritage of the island. The community also highlighted the requirement for land bases to support
working harbour activities and the role of the island in apprenticeship
training. There was also a strong view expressed by the community that residential and high-rise buildings should not be permitted on the island. QualitiesThe island is the farthest knoll at the end of the Drummoyne (Lyons Road) ridge. Snapper and Spectacle Islands are also outcrops on this same submerged ridge. Cockatoo Island is the dominant landform in the large basin of water bounded by the shores of Woolwich, Drummoyne, Birchgrove and Balmain. The island breaks this body of water into a series of passages between it and the mainland, and the dominant form of the island actually disrupts the appreciation of the basin as a single body of water. The name Cockatoo Dockyard gives a false impression of a single function when in fact the island's function was highly varied, ranging from heavy shipbuilding and engineering to small boat construction and design, fine joinery and cabinet making. This diversity of activity is reflected both in the buildings, their materials, scale and pattern of windows and the spaces created between them. As a result, when on the island, even on the top, the harbour outlook is restricted to occasional glimpses and is secondary to the view of contained and defined spaces. Conversely, many of the buildings and places are not apparent from the water and can only be appreciated by actually being in them. The gaol courtyard is the most obvious example, but it applies to even the largest buildings like the turbine hall that is absorbed into the mass of the whole island. In this way Cockatoo Island is quite different to the smaller islands of the harbour where the surrounding waters are always apparent. The sheer diversity and interesting detail of the buildings and ground-form draws attention away from the harbour. The island's evolution has been organic and accretive as it has been modified and adapted as required - to fulfil a particularly large contract or to accommodate changes in ship size and building technology. The fundamental character of the island derives from this reworking of existing buildings and facilities. Over time there was also an articulation of the activity, whereby administration occupied the old gaol buildings, residential, white-collar design, lofting and fine joinery occupied the top of the island and the heavier industry the aprons. Many buildings were demolished and replaced over the life of the island but more commonly they were modified, enlarged and adapted. This applied to even the oldest buildings and the apparent disregard for their cultural value in the past is indicative of the primary need to maintain a functional dockyard often with very limited means. Similarly, all of the original vegetation was removed and the island has had a bare appearance for many years. The harshness of the bare scraped rock on both the cutting faces and the top of the island near the granaries is also part of its character. A few Moreton Bay and Port Jackson figs have established themselves on the last remnant of the original rock outcrops on the northern face. The 'softest' part of the island is the residential area that has a number of large Camphor Laurels. The most extensive demolition of buildings and wharves occurred after the closure of the dock, resulting in large open areas on the northern and eastern aprons. These give the impression of grassed open space with a vegetated slope backdrop facing north and a large harsh plane facing east with a bare cliff backdrop. The extensive boulder rock "rip-rap" shoreline also dates from this period. The overall quality of the island is its diversity that derives from its organic development over a long period of time. This diversity, combined with the complexity of the topography and outlook means that it is difficult to perceive the island as a single unified entity. The Trust is seeking to retain this diversity and richness through its planning work. The Plateau
Workshops and drawing offices
Gaol
North apron
East apron
Main halls
South Apron
Significant Values and ConsiderationsNatural ValuesRefer to Figure
5.3 (PDF, 114kb
Cultural Values
Figure 5.3
(PDF, 114kb OutcomesVision and BenefitsRefer to Figure
5.5 (PDF, 234kb The plan for Cockatoo Island proposes the revival of working maritime facilities at the heart of the historic maritime industrial precinct of Sydney Harbour. The island's achievements will be recognised and inspire the future direction. Its potential as a cultural venue at a landmark harbour location will be realised. The island will provide a rich diversity of places to visit by an expanded network of water transport for leisure and convenience. ActionsThe island's revival needs a diverse range of activities and a considerable population to overcome and compensate for its isolation. Resuscitation of the island in a befitting manner will take time. The first task is to protect the island and its extraordinary buildings and fixtures from further deterioration prior to commencing restoration and remediation. Cockatoo Island requires a step-by-step process of re-occupation. Activity needs to start small and compact, providing a density and sense of vibrancy. Later it can expand to provide active nodes rather than scattered activities throughout the island. Initial actions may include the:
The southern apron is the most appropriate place to start these uses. The northeast apron also has the potential as a major venue for cultural activities in the immediate term. Initially the buildings may not be able to be occupied or used. However, the outside spaces can provide a wonderful setting for smaller events and exhibitions. The island tours will be built upon with the gradual addition of supporting facilities and attractions. An island walk is to be developed that retraces the pattern of occupation from convict gaol to maritime industry. Access and PathwaysA number of land bases to service Cockatoo and the other harbour islands with bulky goods and services is required. These bases should have good arterial road and ideally rail connections. So far, State Government agencies have identified five potential sites: Berrys Bay, Darling Harbour Wharf 8, Rozelle Bay, White Bay and the Horse Paddock at Woolwich (refer to Section 4, Woolwich). Visitors and workers could arrive at the island by ferry, as in the past, or by a shuttle boat service. There is also an opportunity for landing quays for smaller craft. Public pathways need to be designed so that they do not detract from the heritage values and character of the island, its buildings and their setting. It is important that their design assist with the interpretation of the island and its values. Interpretation and visitor facilities could be created and the island tours expanded. The convict gaol precinct requires repair, restoration and interpretation. This work could include the excavation of the underground isolation cells. Interpretation of the granary silos could involve exposing the sandstone and creating a plaza/forecourt between the residential area and workshops. A walk along the cutting (possibly within the edge of the adjacent turbine workshop) would also reveal the convict carved granaries. The dwellings and gardens, repaired and improved, could be included in the island tours. Outcomes for Specific PrecinctsNorthern ApronThe northern apron could provide a venue for low-key boat building, repair and hardstand storage in a park-like area that extends up the hillside. It has the potential to become an open space that conveys dramatic changes and uses such as the original shoreline, demolished workshops, rails, cuttings, cranes and convict terraced gardens. The northern apron also provides a landing place for barges transporting goods. Contamination of the north apron needs to be contained and managed as will the on site treatment of storm and wastewater. Southern ApronThe workshop areas south of the docks are most suited to maritime activity such as small boat construction, amateur, community or commercial boat building activities and back-of- house repair or servicing of charter vessels. The large hardstand and workshop spaces could be used for boat storage, repair, maintenance and chandlery or even utilised by groups such as the Australian National Maritime Museum, Sydney Heritage Fleet or as training facilities. In the interim they may be suitable for special events or as film sets and studios. The North East ApronThere is potential to create a significant civic space facing the city and the historic coal loader at Waverton that lies across the expanse of water. The northeast apron could become a place for boat repair and storage, events on a grand scale or the site for a major cultural facility. There is a need to retain flexibility in determining the uses for the apron as the island is brought back to life. The waterfront sheds might be adapted for shipbuilding and repair, studios or commercial uses. The WorkshopsThere is potential to better reveal the convict-built workshop and to form a waterfront plaza. This will be guided by the findings of a conservation management plan to be prepared for the dockyard precinct. Fitzroy and Sutherland DocksNeither of the docks is currently operational. However, the long-term plan is to recommission one of them and although some essential repairs have been made to the Fitzroy Dock Caisson the Sutherland Dock may be more suited for this purpose. In the meantime both docks offer areas for sheltered water for small boats. The Submarine Re-fit WorkshopThis building is suitable for refurbishment and adaptation for a range
of uses including: office studios, archival storage, Power Station/Pump HouseThe power station is an unrivalled combination of rare electrical equipment and original buildings and will be retained as a historical artefact. The PlateauThe residences, workshops and offices could provide for a mix of function/meeting facilities, visitor accommodation, commercial offices/studios and venues for conferences, functions and special training, e.g. as part of summer-school campus. Overnight accommodation could enhance the island's attraction, from simple hostel to self-contained accommodation. The convict gaol precinct requires careful interpretation and any future uses will be determined by a conservation management plan to be prepared for the precinct. New service infrastructure is required and this provides an opportunity to develop and promote ecologically sustainable water, waste and energy systems. Principles for Building Retention, Removal and New buildingsThe adaptive re-use of buildings on Cockatoo Island must convey their past uses. The character, such as the harsh convict precinct or the industrial scale and form of the workshops, must be retained. New building and structures may be required to fulfil the primary objectives for the Island. The scale, form, materials, finishes and interface with the public domain of new buildings must provide a sympathetic relationship to the heritage values of the island, its buildings and fixtures and assist with interpretation of heritage buildings or fixtures that have previously been removed. Criteria for usesFuture uses must draw from the island's significance and contribute to:
Other initiativesConservation works, educational and other cultural programs to convey the totality of the island's heritage will be developed in association with others - such as the Australian National Maritime Museum, the Heritage Fleet, the Powerhouse Museum and former workers. The feasibility of establishing an aboriginal cultural centre on the island will also be investigated in consultation with the Aboriginal community. Opportunities for sponsorship to realise the above programs and the resuscitation of the island will be explored. |
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