USS Cayuga (LST-1186)

Cayuga was a Newport-class tank landing ship which were designed to meet the goal put forward by the United States amphibious forces to have a tank landing ship (LST) capable of over 20 knots (37 km/h; 23 mph). As the traditional flat-fronted bow door form for LSTs would not be capable of such speeds, the Newport class adopted a traditional ship hull pointed bow above which was mounted a 112-foot (34 m) aluminum ramp slung supported by two derrick arms. The 34-long-ton (35 t) ramp was capable of sustaining loads up to 75 long tons (76 t). This made the Newport class the first to depart from the standard LST design that had been developed in early World War II.[2][3][4]

The LST had a displacement of 4,793 long tons (4,870 t) when light and 8,342 long tons (8,476 t) at full load. Cayuga was 522 feet 4 inches (159.2 m) long overall and 562 ft (171.3 m) over the derrick arms which protruded past the bow.[3][4] The vessel had a beam of 69 ft 6 in (21.2 m), a draft forward of 11 ft 5 in (3.5 m) and 17 ft 5 in (5.3 m) at the stern at full load.[5]

Cayuga was fitted with six Alco 16-645-ES diesel engines turning two shafts, three to each shaft. The system was rated at 16,500 brake horsepower (12,300 kW) and gave the ship a maximum speed of 22 knots (41 km/h; 25 mph) for short periods and could only sustain 20 knots (37 km/h; 23 mph) for an extended length of time. The LST carried 1,750 long tons (1,780 t) of diesel fuel for a range of 2,500 nautical miles (4,600 km; 2,900 mi) at the cruising speed of 14 knots (26 km/h; 16 mph). The ship was also equipped with a bow thruster to allow for better maneuvering near causeways and to hold position while offshore during the unloading of amphibious vehicles.[4][6]

The Newport class were larger and faster than previous LSTs and were able to transport tanks, heavy vehicles and engineer groups and supplies that were too large for helicopters or smaller landing craft to carry.[7] The LSTs have a ramp forward of the superstructure that connects the lower tank deck with the main deck and a passage large enough to allow access to the parking area amidships. The vessels are also equipped with a stern gate to allow the unloading of amphibious vehicles directly into the water or to unload onto a utility landing craft (LCU) or pier. At either end of the tank deck there is a 30 ft (9.1 m) turntable that permits vehicles to turn around without having to reverse.[2][3] The Newport class has the capacity for 500 long tons (510 t) of vehicles, 19,000 sq ft (1,800 m²) of cargo area and could carry up to 431 troops.[2][8] The vessels also have davits for four vehicle and personnel landing craft (LCVPs) and could carry four pontoon causeway sections along the sides of the hull.[3][4]

Cayuga was initially armed with four Mark 33 3-inch (76 mm)/50 caliber guns in two twin turrets. The vessel was equipped with two Mk 63 gun control fire systems (GCFS) for the 3-inch guns, but these were removed in 1977–1978.[4] The ship also had SPS-10 surface search radar.[9] Atop the stern gate, the vessels mounted a helicopter deck. They had a maximum complement of 213 including 11 officers.[7]

• Blackman, Raymond V. B., ed. (1972). Jane's Fighting Ships 1972–73. London: Sampson Low, Marston & Company. OCLC 28197951.
• Brown, Ronald J., ed. (2000). U. S. Marines in the Persian Gulf, 1990–1991: With Marine Forces Afloat in Desert Shield and Desert Storm. Washington, D.C.: History and Museums Division, Headquarters, U.S. Marine Corps. p. 11. ISBN 978-0-7881-8563-2.
• Couhat, Jean Labayle, ed. (1986). Combat Fleets of the World 1986/87. Annapolis, Maryland: Naval Institute Press. ISBN 0-85368-860-5.
• "Cayuga (LST-1186)". Dictionary of American Naval Fighting Ships. Navy Department, Naval History and Heritage Command. Retrieved 8 February 2020.
• Gardiner, Robert; Chumbley, Stephen & Budzbon, Przemysław, eds. (1995). Conway's All the World's Fighting Ships 1947–1995. Annapolis, Maryland: Naval Institute Press. ISBN 1-55750-132-7.
• Melson, Charles D. (1991). U.S. Marines in Vietnam: The War That Would Not End (PDF). Washington, D.C.: History and Museums Division, Headquarters, U.S. Marine Corps. ISBN 978-0-16-035971-2.
• Moore, John, ed. (1974). Jane's Fighting Ships 1974–75 (77th ed.). New York: Franklin Watts Incorporated. ISBN 0-531-02743-0.
• Moore, John, ed. (1975). Jane's Fighting Ships 1975–76 (78th ed.). New York: Franklin Watts Incorporated. ISBN 0-531-03251-5.
• Moore, John, ed. (1976). Jane's Fighting Ships 1976–77 (79th ed.). New York: Franklin Watts Incorporated. ISBN 0-531-03261-2.
• Moore, John, ed. (1978). Jane's Fighting Ships 1978–79 (81st ed.). New York: Franklin Watts Incorporated. ISBN 0-531-03297-3.
• This article includes information collected from the Naval Vessel Register, which, as a U.S. government publication, is in the public domain. The entry can be found here.
• Sharpe, Richard, ed. (1990). Jane's Fighting Ships 1990–91 (93 ed.). Surrey, United Kingdom: Jane's Information Group. ISBN 0-7106-0904-3.
• Saunders, Stephen, ed. (2004). Jane's Fighting Ships 2004–2005 (107 ed.). Alexandria, Virginia: Jane's Information Group Inc. ISBN 0-7106-2623-1.