High Quality Content by WIKIPEDIA articles! USS Callao (IX-205), an unclassified miscellaneous vessel, was the third ship of the United States Navy to be named for Callao, a seaport in Peru. She was built in 1943 and 1944 by P. Smit, Jr. Shipyard, in Rotterdam, Holland, as Externsteine for the Kriegsmarine. The ship was originally named for the unusual Externsteine rock formation investigated by Heinrich Himmler for evidence of cultural significance to early Teutonic folklore and history. Externsteine was employed as a weather observation ship off Shannon Island on the northeast coast of Greenland to aid forecasting of storm events tactically significant to North Atlantic and European combat operations, but was captured on the night of 15 October–16 October 1944 by USCGC Eastwind.