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NavSource Online: Patrol Craft/Gunboat/Submarine Chaser Photo Archive

USC&GS Caronia
ex-USS Andradite (PYc 11)

Call sign:
Nan - Fox - Baker - Able

ex-USC&GS Guide

Andradite served both the U. S. Navy and the Coast & Geodetic Survey

Coastal Patrol Yacht:

  • Built in 1927 as the yacht Comoco by Defoe Boat and Motor Works, Bay City, Michigan for James E. Whitin of North Ukbridge, MA
  • Renamed Caronia
  • Sold in 1934 to George L. Machris of Los Angeles, CA
  • Acquired by the Navy in 1942, transferred to the Coast and Geodetic Survey and commissioned USC&GS Guide
  • Did small amount of survey work in San Francisco Bay area prior to return to Navy
  • Returned to the Navy 16 March 1942
  • Commissioned USS Andradite (PYc-11), 18 April 1942
  • Decommissioned 19 December 1945
  • Struck from the Naval Register 8 January 1946
  • Transferred to the Maritime Commission for disposal 22 June 1947 to serve with the Coast and Geodetic Service and renamed Caronia
    Naval Vessel Register of 1 January 1949 lists transfer to the War Shipping Administration as February 1947
  • Sold in 1952 to the North Coast Timber Corp. of San Francisco, CA
  • Burned at Canton Island (Phoenix Group), Pacific Ocean, 11 July 1956 at position 2 15' S. Latitude, 171 43' W. Longitude.


  • Displacement 395 t.
  • Length 132' 6"
  • Beam 23' 6"
  • Draft 9' 4"
  • Speed 11.7 kts.
  • Complement 56
  • Armament: One 3"/23 gun mount
  • Propulsion: Two 600shp Cooper Bessemer 8-G X-6M R diesel engines, two shafts.

    Click on thumbnail
    for full size image
    Size Image Description Source
    Andradite 438k Line drawing from the March 1927 edition of The Rudder magazine Munsel White
    Andradite 113k .
    Andradite 58k . Historical Collections of the Great Lakes
    Andradite 87k c. May 1936
    Newport Harbor, CA
    Courtesy of the Newport Harbor Nautical Museum
    Jim Rogers
    Andradite 84k
    USS Andradite (PYc 11)
    Andradite 61k From the collection of John H. Hastings, Coxswain, USN Rob Hastings
    Andradite 70k 1 August 1941 Original photo: Gunter Kreb
    Replacement photo: Robert Hurst

    View the Andradite (PYc-11)
    DANFS History entry located on the Haze Gray & Underway Website
    Back To The Main Photo Index Back to the Patrol Craft/Gunboat/Submarine Chaser Ship Index Back to the Coastal Patrol Yacht (PYc)Photo Index

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    This page created by Gary P. Priolo and maintained by Joe Radigan
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