From: Dictionary of American Naval Fighting Ships, Vol. II, 1977.

CALLAO (IX-205)

dp. 1,015
l. 183'
b. 30'10"
dr. 13'11"
s. 10 k.
cpl. 78

The third CALLAO (IX-205) was built in 1943-1944 by P. Smit, Jr., 
Shipyard, Rotterdam, Holland, as EXTERNSTEINE for the German Navy; 
captured on the night of 15-16 October 1944 by the Coast Guard Cutter 
EASTWIND off Greenland; and commissioned 24 January 1945, Lieutenant D. 
O. Newton, USNR, in command.

CALLAO was commissioned at Boston, where a prize crew had brought her by 
way of Reykjavik and Argentia. Between 30 January 1945 and 4 February 
she was outfitted at Philadelphia Navy Yard for special experimental 
work for the Bureau of Ships, and for the next 5 years carried out tests 
in the area of Cape May, N.J., and Cape Henlopen, Del. She was 
decommissioned 10 May 1950, and sold 30 September 1950.