Anti-ship missile
An anti-ship missile (AShM[2] or ASM)[3] is a guided missile that is designed for use against ships and large boats. Most anti-ship missiles are of the sea-skimming variety, and many use a combination of inertial guidance and active radar homing. A large number of other anti-ship missiles use infrared homing to follow the heat that is emitted by a ship; it is also possible for anti-ship missiles to be guided by radio command all the way.
The first anti-ship missiles, which were developed and built by Nazi Germany, used radio command guidance.[4] These saw some success in the Mediterranean Theatre during 1943–44, sinking or heavily damaging at least 31 ships with the Henschel Hs 293 and more than seven with the Fritz X, including the Italian battleship Roma and the light cruiser USS Savannah. A variant of the HS 293 had a TV camera/transmitter on board. The bomber carrying it could then fly outside the range of naval anti-aircraft guns and use visual guidance via the bombardier to lead the missile to its target by radio control.
Many anti-ship missiles can be launched from a variety of weapons systems including surface warships (also referred to as ship-to-ship missiles), submarines, bombers, fighter planes, patrol planes, helicopters, shore batteries, land vehicles, and, conceivably, even infantrymen firing shoulder-launched missiles. The term surface-to-surface missile (SSM) is used when appropriate. The longer-range anti-ship missiles are often called anti-ship cruise missiles.
Etymology[edit]
Both "AShM"[5] and “ASM”[6] are utilized interchangeably as an acronym for "anti-ship missile." "AShM" may be the preferred acronym when confusion with "air-to-surface missile" (commonly abbreviated as "ASM") may occur.
Countermeasures against anti-ship missiles include:
On February 25, 1991, during the first Gulf War, the Phalanx-equipped USS Jarrett was a few miles from USS Missouri and the destroyer HMS Gloucester. The ships were attacked by an Iraqi Silkworm missile (often referred to as the Seersucker), at which Missouri fired its SRBOC chaff. The Phalanx system on Jarrett, operating in the automatic target-acquisition mode, fixed upon Missouri's chaff, releasing a burst of rounds. From this burst, four rounds hit Missouri which was two to three miles (3.2 to 4.8 km) from Jarrett at the time. There were no injuries.[31] A Sea Dart missile was then launched from HMS Gloucester, which destroyed the Iraqi missile, achieving the first successful engagement of a missile by a missile during combat at sea.
Modern stealth ships – or ships that at least employ some stealth technology – to reduce the risk of detection and to make them a harder target for the missile itself. These passive countermeasures include:
Examples of these include the Norwegian Skjold-class patrol boat, the Swedish Visby-class corvette, the German Sachsen-class frigate, the US Navy's Zumwalt-class destroyer and Arleigh Burke-class destroyer, their Japanese Maritime Self-Defense Force's close counterparts in Aegis warships, the Atago-class destroyer, and the Kongo-class destroyer, the Chinese Type 054 frigate and the Type 052C destroyer, Russian Navy's Admiral Gorshkov-class frigate and Steregushchiy-class corvette, the Indian Shivalik-class frigate, Kolkata-class destroyer and Visakhapatnam-class destroyer, the French La Fayette-class frigate, the FREMM multipurpose frigate and the Royal Navy's Type 45 destroyer.
In response to China's development of anti-ship missiles and other anti-access/area denial capabilities, the United States has developed the AirSea Battle doctrine.