Restoration and relocation of the South Solitary Island Lighthouse Optic (SSILO)

Overview

International Conservation Services was engaged by Coffs Harbour City Council (CHCC) to undertake the relocation and restoration of the South Solitary Island Lighthouse Optic (SSILO).

The SSILO lens is significant, as outlined in the 2013 Statement of Significance. The optic remained operational at South Solitary from 1880 until the lighthouse was automated in 1975, when more modern technology was introduced.

In 2020 CHCC commissioned ICS to provide a Conservation Management Plan for SSILO.  The resulting plan is a comprehensive document that outlines all elements of the construction, history, conservation status, potential for disassembly and reassembly, maintenance schedule, and relocation options.

Year

2021-2023

Client

City of Coffs Harbour

Services

  • Built heritage conservation
  • Industrial heritage conservation

Awards

Condition

Considering the age of SSILO and its numerous moves (UK to Australia, installation on South Solitary, and relocation back to the mainland), the glass and metals components are in remarkably good condition overall. Significant flooding that occurred in 1996 and 2009 caused rusting of internal components of the pedestal, but the glass was unaffected.

Glass components – Condition

  • Numerous small chips
  • Significant damage to one prism in one panel and several loose elements
  • Variation in patina on copper-alloy frames, and surface dust and grime

Pedestal – Condition

  • Small losses to paint
  • Extensive greasy residue from oil, grease and dust
  • Mercury basin filed with rusty sludge
  • One metal bar component missing
  • Float that sits in the mercury basin and supports the glass filled with vast quantity of rusty water
  • Gear mechanisms greasy and dirty, with small rust spots
  • Motor box greasy and dirty- motor functioned but several screws missing

Additional components- canisters, weights, and paraphernalia

  • Areas of flaking paint and rust spots
  • Surface dust and grime
  • Broken handles

Treatment

CHCC proceeded with the conservation and relocation of SSILO to the Coffs Harbour Jetty Foreshore, as part of a broader NSW Government project to revitalise the area.

Conservation treatment consisted of the following steps:

  • Disassembly and cleaning and conservation of all pieces
  • Packing and transport of the object
  • Reassembly of the SSILO in new structure on the Coffs Harbour Jetty Foreshore
  • Electrical works
  • Provision of ongoing advice to the architects on conservation requirements of the new structure
  • Review and amend the current maintenance and cleaning schedule to reflect the new location
  • Provision of an update to the appendix of the SSILO Management Plan to document the works undertaken during the project

Treatment outcomes

The most valuable object in the Yarrila Arts and Museum (YAM) collection, was carefully relocated to its current position on the Jetty Foreshore, once again in sight of the ocean where it belongs.  It has been described asthe “jewel in the crown” of the beautiful Coffs Harbour precinct.

Before treatment

After treatment

Testimonial

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