Doubling Point Light Built in 1898 on the northeast side of Arrowsic Island at a sharp bend in the Kennebec River to guide mariners in Bath. One of four lights,Doubling is nearest the shipbuilding harbor. The octagonal tower made of wood is connected to the island with a wooden walkway and used to hold a fifth-order Fresnel lens. A wooden framed keeper's house oil house and a bell tower being built at the same time. The keeper's house was sold to a private owner in 1934. The light then became the responsability of the keeper of the Kennebec River Range lights. The light was automated in 1979, the Fresnel lens replaced and the Squirrel Island keeper became responsible for monitoring the light. In 1981 all three lights became the responsibility of the keeper at Kennebec River station.