An extremely rare chart recorded in only 3 known examples. This chart is made up of two separate maps, one clearly being produced to extend the other. The main map is effectively one of the British Isles and her immediate waters. The extension bears no title but was clearly intended to extend the map’s coverage south to the Straits of Gibraltar. The main map bears the engravers name H[erman] Moll Fecit 1699′, the date looks at first glance to be 1690 but a closer look reveals in all examples a defective tail of the second 9. Shirley identifies the map as possibly being a separate publication. In the example of the ‘Hydrographia Universalis’ at the British Library the two parts are bound separately. Shirley did not identify the extension sheet as being so, there is no allusion to this in the main title. The ‘Hydrographia Universalis’ followed on the success of the little ‘Hydrographia Gallia’ co-published with John Thornton and Robert Morden in 1694. This work extended the coverage worldwide. The ‘Hydrographia Universalis’ is exceedingly rare, only four examples are known and none are recorded having been on the open market. These exist at the British Library, National Maritime Museum and two examples at the Library of Congress. Phillips nos. 527 no. 10 & 5694; Sanderson (NMM) 382 nos. 3 & 72; Shirley BL Atlases M.Lea 1a no. 10 and 83; Shirley ‘Printed Maps of the British Isles 1650-1750’ Moll 4.