Document ID: chunk:federal_register_of_legislation:F2023L00078:reg:2023:p8
Version: federal_register_of_legislation:F2023L00078
Segment Type: reg
Provision Reference: reg 2023 (pt 8/13)
Character Range: 20309–23355

and permission is therefore required to land transportation of any sort on its shores and airstrip.
Owing to the relatively flat terrain, access to the lighthouse site can be made by vehicle or on foot, (the helipad is reserved for authorised personnel only). Access inside the Swan Island Lighthouse tower and oil store is restricted to authorised AMSA personnel.
Figure 7. View of helipad and paths leading to Swan Island Lighthouse tower (© AMSA, 2018)

Tourism
Limited holiday accommodation is available at the light keepers' cottages on Swan Island. Due to the extreme isolation of the Lighthouse and Island, no tourism currently operates inside the lighthouse tower, however pedestrian access around the lightstation is possible.
  2.5 Listings
The following table outlines the various heritage registers on which Swan Island Lighthouse is listed.
Register                                         ID
Commonwealth Heritage List                       105598[5]
Tasmanian Heritage Register                      1418[6]
Register of the National Estate (non-statutory)  12674[7]

  3      History
  3.1 General history of lighthouses in Australia
The first lighthouse to be constructed on Australian soil was Macquarie Lighthouse, located at the entrance to Port Jackson, NSW. First lit in 1818, the cost of the lighthouse was recovered through the introduction of a levy on shipping. This was instigated by Governor Lachlan Macquarie, who ordered and named the light.
The following century oversaw the construction of hundreds of lighthouses around the country. Constructing and maintaining a lighthouse were costly ventures that often required the financial support of multiple colonies. However, they were deemed necessary aids in assisting the safety of mariners at sea. Lighthouses were firstly managed by the colony they lay within, with each colony developing their own style of lighthouse and operational system. Following Federation in 1901, which saw the various colonies unite under one Commonwealth government, lighthouse management was transferred from state hands to the Commonwealth Lighthouse Service.

Lamps and optics: an overview
Lighthouse technology has altered drastically over the centuries. Eighteenth century lighthouses were lit using parabolic mirrors and oil lamps. Documentation of early examples of parabolic mirrors in the United Kingdom, circa 1760, were documented as consisting of wood and lined with pieces of looking glass or plates of tin. As described by Searle, 'When light hits a shiny surface, it is reflected at an angle equal to that at which it hit. With a light source is placed in the focal point of a parabolic reflector, the light rays are reflected parallel to one another, producing a concentrated beam'.[8]

Figure 8. Incandescent oil vapour lamp by Chance Brothers (Source: AMSA)
Figure 9. Dioptric lens on display at Narooma (Source: AMSA)
In 1822, Augustin Fresnel invented the dioptric glass lens. By crafting concentric annular rings with a convex lens, Fresnel had discovered a method