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Triana

In all, by the end of the Cold War the Greek navy had 10 submarines in its fleet, including two Balao-type boats obtained from the United States in the 1970's. Submarines were first developed for their stealth, and the most valuable trait of today's submarines is still its stealth. They remain a Navy's most deadly weapons.

SS 365 HARDHEAD was converted to Guppy-IIA specification in 1952-53, which streamlined her appearance and greatly improved her underwater performance. The "Guppy" Program (Greater Underwater Propulsive Power) sought to backfit many of the German Type XXI submarine design features. Odax (SS-484) and Pomodon (SS-486) were the first submarines converted. Deck guns were removed, the outer hull was streamlined, the conning tower replaced by a sail, replaced the propellers, installed more air conditioning, and the battery capacity doubled. The program was successful, the converted submarines were capable of 18.2 kts submerged, exceeding their surfaced speed by 0.4 kts. The original Guppy conversions were limited to two submarines. Twenty-four additional conversions were undertaken under the "Guppy II" program. This conversion included a snorkel mast in addition to the Guppy I items. Sold to Greece on 26 July 1972; renamed PAPANIKOLIS (S-114), she was stricken from Greek Navy in 1993.

Scabbardfish (SS-397) was laid down on 27 September 1943 by the Portsmouth Navy Yard, Portsmouth, N.H.; launched on 27 January 1944; and commissioned on 29 April 1944. On 3 January 1948, she was underway for Mare Island and, two days later, reported to the Pacific Reserve Fleet for inactivation. In February 1948, she was placed in reserve, out of commission, and berthed at Mare Island. Scabbardfish remained there until October 1964 when she was again placed in commission, preparatory to transferring her to the government of Greece. She was officially loaned to the Royal Hellenic Navy, on 26 February 1965, and served as Triana (S-86). Purchased by Greece in April 1976. Stricken in 1980, in use as dockside trainer as late as 1982.