Shortly before the completion of the lighthouse in January 1881, the barque Lupatia was wrecked near the rock during foggy weather and sank, with the loss of all 16 crew members.
[2] Wheeler's initial assessment determined that access to the rock was severely limited, if not impossible, but was ordered to continue.
[2] In September 1879, a third survey was ordered, this time headed by John Trewavas, whose experience included the Wolf Rock lighthouse in England.
[2] His replacement, Charles A. Ballantyne, had a difficult assignment recruiting workers due to the widespread negative reaction to Trewavas' death, and a general desire by the public to end the project.
[2] The structure of the lighthouse included an attached keeper's quarters and a 62-foot (19 m) tower that originally housed a first-order Fresnel lens, with an incandescent oil vapor lamp, 133 feet (41 m) above sea level.
[2][3] In early January 1881, when the lighthouse was near completion, the barque Lupatia was sailing in thick fog and high winds when the ship's Captain noticed that they were too close to shore.
Wheeler, the official in charge of the lighthouse's construction, heard the voices of the panicked crew and immediately ordered his men to place lanterns in the tower and light a bonfire to signal the ship that they were approximately 600 feet (200 m) from the rock.
[2] On October 21, 1934, the original fresnel lens was destroyed by a large storm that also leveled parts of the tower railing and greatly damaged the landing platform.
[2][3][4] Winds had reached 109 miles per hour (175 km/h), launching boulders and debris into the tower, damaging the lantern room and destroying the lens.
[2] After the storm subsided, communication with the lighthouse was severed until keeper Henry Jenkins built a makeshift radio from the damaged foghorn and telephone to alert officials.
[2] The Fresnel lens was replaced by an aerobeacon, and a metal mesh placed around the lantern room to protect the tower from large boulders.