Launched November 14, 1899, named El Rio; commissioned January 25, 1918, at Tietjen and Lang’s.
Canandaigua—Captain W. H. Reynolds, U.S.N.
Launched in May, 1901, named El Siglo; commissioned March 2, 1918, at the Morse Dry Dock and Repair Company, Brooklyn, N.Y.
Canonicus—Captain T. L. Johnson, U.S.N.
Launched November 14, 1899, named El Cid; commissioned March 2, 1918, at the Morse Yard.
All four preceding were built at the Newport News Ship and Engine Building Company, Newport News, Va., as freight liners for the Southern Pacific Steamship Company (Morgan Line). Length 405 feet, beam 48 feet, draft 20 feet, displacement 7000 tons; single screw, 15 knots; one 5-inch 51-caliber gun aft, two 3-inch anti-aircraft guns forward; 830 mines normally, 900 maximum, carried on three decks; officers 21, crew 400; total 421.
Quinnebaug—Commander D. Pratt Mannix, U.S.N.
Launched October 14, 1898, named Jefferson; commissioned as minelayer March 23, 1918, at Robins’ Dry Dock and Repair Company, Brooklyn, N.Y.
Saranac—Captain Sinclair Gannon, U.S.N.
Launched in 1899, named Hamilton; commissioned April 9, 1918, at James Shewan & Sons, Inc., Brooklyn.