What appears as a solitary sentinel rising from the sea? It is The Graves Light. The Graves Light stands as a testament to maritime safety. This iconic lighthouse marks the entrance to Boston Harbor. It is a crucial aid for ships navigating these waters.
Standing offshore, about 9 miles from downtown Boston, The Graves Light has guided countless vessels since 1905. The Graves themselves are rocky outcroppings. They rise only 15 feet above high tide. These rocks posed a significant danger to ships.
Before The Graves Light, only signal buoys warned sailors. But as Boston became a major shipping lane, a lighthouse became essential. Congress recognized this need. They allocated $188,000 for its construction.
Construction of The Graves Light began in 1903. Royal Luther oversaw the project. Granite from Cape Anne was used to build the tower. The massive stones were interlocked and pinned together with iron spikes. The Graves Light stands 113 feet tall. It proudly holds the title of the tallest lighthouse in Boston Harbor.
On September 1, 1905, Keeper Elliot C. Hadley lit The Graves Light for the first time. Its powerful beam shone brighter than any light north of Cape Cod. The light used a first-order Fresnel lens. This lens was state-of-the-art technology. French physicist Augustin Fresnel invented these lenses. They revolutionized maritime navigation.
The Fresnel lens at The Graves Light was a marvel. It stood 12 feet tall. It had a diameter of 7 feet. The lens sat atop a bed of liquid mercury. This allowed for near frictionless rotation. It efficiently refracted and reflected light. It reduced light loss from 60-80% to less than 20%.
Even with The Graves Light, disasters could still occur. In 1938, the steamer City of Salisbury struck a reef nearby. The ship carried a cargo of animals. Pythons, cobras, monkeys, and rare birds were all aboard. The ship broke apart. Most animals were saved. Decades later, a monkey skeleton was found on a harbor island. The Salisbury eventually sank.
Over time, the Fresnel lens at The Graves Light deteriorated. In 1976, it was replaced with a modern VRB-25 lamp. The original lens was removed. It is now in storage at the Smithsonian Institution.
Automation replaced the three-person crew at The Graves Light. In 2012, the lighthouse was declared surplus. The Graves Light was sold at auction in 2013 to Dave and Lynn Waller. The Wallers have since restored the lighthouse. They installed a new Fresnel lens in 2023. It was constructed from scavenged pieces.
The Graves Light continues to shine. It remains an active aid to navigation. It is powered by solar panels since 2001. The Graves Light stands as a beacon of hope. It symbolizes safety for all who navigate Boston’s waters.