Eclipse Island Lighthouse Optic

The Eclipse Island Optic, crafted by the renowned Chance Brothers & Co. in Birmingham, England, stands as a testament to early 20th-century engineering marvels. This lighthouse optic was manufactured between 1922 and 1923 and found its home on the Eclipse Islands in 1926.

Fueled by vaporised kerosene and air, the optic operated at high pressure, creating a brilliant light of 1,000,000 candlepower. Its unique design, featuring 490 hand-ground glass lenses, allowed it to cast its beam up to 35 miles across the sea. The optic’s “signature” of three flashes followed by a blank was crucial for aiding navigation, ensuring sailors could identify it from other lights along the coast.

Perched upon a mercury float pedestal, the optic’s rotation was driven by an intricate counterweight system, requiring constant attention as it needed rewinding every hour and a quarter. This innovative design combined precision with strength, weighing a total of 10.5 tons. It remained in operation until 1976, leaving a legacy of maritime guidance.

For those intrigued by its history, the “Eclipse Island LIGHTHOUSE” booklet offers a deeper dive into its story. Explore more to uncover the fascinating details of this iconic maritime beacon.