Plan of Umatac Bay on the island Guahan or Guam. [cartographic material] /

Nautical chart of Umatac Bay on southwest coat of the island of Guam. The map focuses on the town of Umatac with the church, the palace and Manban Castle clearly marked. It also includes four profile views of Guam. Relief is also shown by depth soundings.; "NB Umatac is situated near the SW part of Guam ; the Castle is in 23°12'18" N Lat. 150°36' E Long. from Cadiz Royal Observatory (Long. 144°45' E from Greenwich) by observations of Chevalier Malespina. Soundings in fathoms of 6 English feet".; At bottom left of map is logo of the Hydrographical Office.; Guide to maps of Australia in books published 1780-1830 : an annotated cartobibliography / compiled by T.M. Perry and Dorothy F. Prescott. Canberra : National Library of Australia, 1996. Ref. 1796.A01, p. 222.; Also available in an electronic version via the internet at: http://nla.gov.au/nla.map-rm4449. Inset views: Views of the Island Guam, No. 1 [in 2 sections] -- [Views of the Island Guam], No. 2 -- View of the Island Guam, when at [anchor] off Port Umatta, from Edwd. Cooke's Voyage 1710. Part 2.d, p. 16