Box of folded ship plans, in the sequence Oracle - Orkan
-Oracle (1916)
-Orangeleaf (RFA) (1916)
-Orangeville (1944)
-Orcadia (1916)
-Orchis (1940)
-Orestes (1916)
-Orestes (1942)
-Orfasy (Isles class trawler) (1942)
-Orcadia, Ossory & Pyrrhus (1944/45)
-Orford (1916)
-Oriana (1916)
-Oriole (Belleisle class) (1916)
-Orion (ex Turkish Boordji Zaffer, renamed Orontes 1909) (1879)
-Orion (completed 1912)
-Orion (launched 1932, completed 1934)
-Orizaba (HMT) (1940, launch 1908)
-Orkan (Polish Navy ex Myrmidon) (1942)