 The settlement grew into a group of shacks built mostly with wreckage from the "Amaranth" (lumber from which was also used by the young Hawaiian colonists to build surfboards), but later, stone and wood dwellings were built and equipped with refrigeration, radio equipment, and a weather station.A crude aircraft landing area was cleared on the northeast side of the island, and a T-shaped marker which was intended to be seen from the air was made from gathered stones, but no airplane is known to have ever landed there.At the beginning of World War II, an Imperial Japanese Navy submarine surfaced off the west coast of the island.