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Montague Island Lighthouse Heritage Management Plan 2020
Lighthouse performance standardsLighthouse performance standards
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Lighthouse performance standards
AMSA aims to meet international standards for the reliability of lighthouses set by IALA. The Montague Island light is designated as an IALA Availability Category 2 aid to navigation (within a scale of Category 1 to Category 3, Category 1 aids are most critical). Category 2 aids have an availability target of 99.0 per cent.