Supporting the Japanese landings were seaplanes from "Kamikawa Maru", temporarily based at Thousand Ships Bay at Santa Isabel Island. About 400 Japanese naval troops—mainly from the 3rd Kure Special Naval Landing Force—disembarked from the transport ship on barges and immediately began construction of facilities on Tulagi and Gavutu-Tanambogo. Aircraft from "Shōhō" covered the landings until early afternoon, when Gotō's force turned toward Bougainville to refuel in preparation to support the landings at Port Moresby. Once the Japanese troops were ashore, six seaplanes landed in Tulagi harbor as part of the establishment of the planned seaplane base there.