Although The Lighthouse Board received responsibilty for
Puerto Rico' aids to navigation in 1900, it wasn't until January 1, 1904,
that President Theodore Roosevelt transferred Hawaii's aids
to navigation from the territorial government to the board.

When The Lighthouse Board took charge in the Hawaiian Islands
there were nineteen lighthouses, twenty daymarks, and
twenty buoys, as well as some sixteen private aids
maintained by the Inter-Island Steamship Company and others.
Only one of the lighthouses - the one at Diamond Head - had a
fresnel lens.