H.O. field chart - United States. Hydrographic Office ([Washington, D.C.] : Hydrographic Office)
-- 4001. Apamama Lagoon, northern part, Gilbert Islands -- 4002. Apamama Lagoon, south passage, Gilbert Islands -- 4007. Schonian Harbor to Peleliu I., Palau Islands, West Caroline Islands -- 4008. Peleliu I. and Angaur I., Palau Islands, West Caroline Islands.
Relief shown by landform drawings and form lines. Depths shown by soundings and form lines.
Hydrographic 'field charts' published aboard ships, including those made for use by World War 2 invasion forces in the southwest Pacific, 1943-59.
Includes various editions of some sheets.
Some sheets include insets.
Also available online
Keywords: Nautical charts; World maps