The "Cayo Manzanillo" was probably a chartered ship. Here is the information found about her in the Lloyd's Register of Shipping in 1914:
Master: Captain McL. Hunter, appointed to the Shipping Line and to the ship in 1912. Rigging: steel single screw Schooner; 1 steel deck & spark deck, partly iron & partly steel; deep framing; 5 cemented bulkheads; cellular double bottom, aft 84 feet, under engine & boilers 44 feet and forward 154 feet, 618 tons; Aft Peak Tank 46 tons. Tonnage: 3,538 tons gross, 2,830 under deck and 2,273 net. Poop & Bridge Deck 203 feet long; Forecastle 34 feet. Construction: 1904 by Armstrong Whitworth & Co. Ltd. in Newcastle. Propulsion: triple expansion engine with 3 cylinders of 24½, 40 & 66 inches diameter respectively; stroke 45 inches; operating at 180 p.s.i.; 328 nominal horsepower; 2 single ended boilers; 8 corrugated furnaces; grate surface 156 sq. ft.; heating surface 5,210 sq. ft.; engine built by North East Marine Engine Co. Ltd. in Newcastle. Owners: Cuban Steam Ships Co. Ltd. (E. Bigland & Co. Ltd. managers) Port of registry; London, Call sign: HBGD Official registration #: 118492