Cyclone-class patrol ship

USS Hurricane, USS Typhoon and USS Chinook, in the Persian Gulf in March 2015.
Class overview
Builders	Bollinger Shipyards
Operators	United States Navy  Philippine Navy  United States Coast Guard
In commission	1993–present
Planned	16
Completed	14
Cancelled	2
Active	10 (US Navy) 1 (Philippine Navy)
General characteristics
Type	Coastal patrol ship
Displacement	328.5 long tons (333.8 t) (light load) 331 long tons (336 t)
Length	179 ft (55 m)
Beam	25 ft (7.6 m)
Draft	7.5 ft (2.3 m)
Installed power	3,350 shp (2,500 kW)
Propulsion	4 × Paxman 16RP200- 1-CM diesel engines 4 × shafts, Reintjes reverse reduction gear box[1]
Speed	35 kn (65 km/h; 40 mph)
Range	2,000–2,500 nmi (3,700–4,600 km; 2,300–2,900 mi) at 12 kn (22 km/h; 14 mph)
Crew	4 officers, 24 enlisted personnel
Armament	2 × 25 mm (0.98 in) MK 38 autocannon 2 × .50 in (12.7 mm) caliber machine guns 2 × 40 mm (1.6 in) MK 19 automatic grenade launchers 2 × 7.62 mm (0.30 in) M240B machine guns 6 × FIM-92 Stinger SAMs 2 × MK-60 quadruple BGM-176B Griffin B missile launchers[2]

The Cyclone-class patrol ships are a class of United States Navy coastal patrol boats. Most of these ships were launched between 1992 and 1994. The primary mission of these ships is coastal patrol and interdiction surveillance, an important aspect of littoral operations outlined in the Navy's strategy, "Forward...From the Sea." These ships also provide full mission support for U.S. Navy SEALs and other special operations forces.

The Cyclone-class ships are assigned to Naval Special Warfare. Of the 14 ships, nine originally operated out of the Naval Amphibious Base Little Creek, Norfolk, Virginia, and four originally operated from the Naval Amphibious Base Coronado. These ships provide the United States Naval Special Warfare Command with a fast, reliable platform that can respond to emergent requirements in a low intensity conflict environment. Three ships were decommissioned and loaned to the United States Coast Guard to be returned to the Navy in 2011, while lead ship Cyclone was transferred to the Philippine Navy. Shamal, Tornado, and Zephyr were returned to the U.S. Navy in 2011 and placed back in commission.

The ships that were on loan to the U.S. Coast Guard were used in a variety of roles, including search and rescue, interception, boarding, and inspection of foreign freighters arriving at United States ports.

In September 2010, the decision was made to recall all of the remaining ships of the class due to fatigue damage to their hulls. The class was designed for a lifespan of roughly 15 years. All but the newest member of the class, USS Tornado (PC-14), have been in service longer. The vessels will be inspected and a decision will be made whether to refit them or to decommission the ships.^{[needs update]}

As of 2015, ten of the U.S. Navy's 13 Cyclone-class patrol ships were deployed to the Persian Gulf to deal with a potential conflict with Iran.^[3] The remaining three ships of the class are slated to be transferred to Naval Station Mayport in Florida to work primarily with drug interdiction work with U.S. Naval Forces Southern Command (USNAVSO) / U.S. Fourth Fleet.^[4]

Development and design[]

One of two 25mm autocannons aboard USS Chinook (PC 9)

USS Hurricane (PC-3) leads six ships of Patrol Coastal Squadron 1 in the Persian Gulf, March 2015.

Cyclone-class patrol craft USS Firebolt (PC 10) passing the Naval Weapons Station Yorktown in Virginia, USA. This starboard side view shows the vessel’s splinter camouflage scheme.

In the 1980s, the U.S. Navy developed a requirement for a replacement for the Vietnam War-era PB Mk III small (65 ft (20 m)) patrol boats used to transport SEAL teams. The first attempt to replace the PB Mk IIIs led to an order being placed in 1984 for a stealthy surface effect ship, the Special Warfare Craft, Medium, or SWCM, with a length of about 83 ft (25 m) and a displacement of 150 long tons (150 t). The SWCM, nicknamed "Sea Viking", was a failure, however, and construction of the prototype was abandoned in 1987.^[5][6][7]

After the failure of the innovative SWCM, it was decided to replace the PB Mk IIIs with a simple development of an existing design rather than wait for an entirely new design to be produced and developed. Bollinger Shipyards proposed a development of the Vosper Thornycroft Province-class fast attack craft built for Oman and Kenya, and this was selected by the U.S. Navy.^[5]

At 56.7 m (186 ft), the new design, at first designated PBC (Patrol Boat Coastal), and later PC, was much larger than the boats that they were to replace. It was planned to build 16 PBCs to replace the 17 PB Mk IIIs, with first deliveries expected in 1991. The program was stopped at 14 boats, however, as it was realised that the PC was too large for the SEAL delivery role.^[8]

Operational career[]

Following the 2003 occupation of Iraq, the Cyclones were deployed to guard Iraq's offshore oil terminal.^[9] When Iraq took over responsibility for the terminal's defense, in 2005, ten of the Cyclone boats remained in the Persian Gulf, performing other patrol duties.^{[citation needed]}

Ships in class[]

Zephyr, Shamal, and Tornado were homeported at Joint Expeditionary Base Little Creek (Virginia) but shifted homeport to Naval Station Mayport (Florida).^[4][15] All three were decommissioned in February 2021.

Users[]

Current[]

•  Philippine Navy (1)
•  United States Navy (10)^[13]

Past[]

•  United States Coast Guard (4 returned to U.S. Navy)

See also[]

• Mark V Special Operations Craft
• Special Operations Craft – Riverine (SOC-R)
• Mark VI patrol boat

References[]

Sources[]

• Baker, A.D. The Naval Institute Guide to Combat Fleets of the World 1998–1999. Annapolis, Maryland: Naval Institute Press, 1998. ISBN 1-55750-111-4.
• Gardiner, Robert and Stephen Chumbley. Conway's All The World's Fighting Ships 1947–1995. Annapolis, Maryland USA: Naval Institute Press, 1995. ISBN 1-55750-132-7.
• Moore, John. Jane's Fighting Ships 1985–86. London: Jane's Yearbooks, 1985. ISBN 0 7106-0814-4.
• Prézelin, Bernard and Baker, A.D. The Naval Institute Guide to Combat Fleets of the World 1990/1991. Annapolis, Maryland, USA: Naval Institute Press, 1990. ISBN 0-87021-250-8.

This article includes information collected from the Naval Vessel Register, which, as a U.S. government publication, is in the public domain.

External links[]

Wikimedia Commons has media related to Cyclone class patrol coastal ships.

• U.S. Navy Fact Sheet
• PC-1 Cyclone class Patrol Coastal Craft (globalsecurity.org)
• WPC-179 Cyclone Patrol Coastal Craft (globalsecurity.org)
• Program Executive Office, Ships^{[permanent dead link]} - PC
• FAS.org
• Navy Times article on repairs to the class.