india buys sonar buoys from us
2024-09-01
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reference news reported on august 31the indian navy will soon receive new american-made sonar buoys, according to the indian "print" website on august 28. the arms purchase agreement was approved during indian defense minister rajnath singh's four-day visit to the united states last week.
the us announced that the us state department approved the sale of sonobuoys to the indian navy, with an estimated price of $52.8 million, which will be deployed by mh-60r helicopters. sonobuoys are a key expendable system used in anti-submarine warfare.
while india already drops us-made sonobuoys from p-8i maritime surveillance and anti-submarine warfare aircraft, the new deal is for sonobuoys to be dropped from mh-60 romeo helicopters, also purchased from the us.
sonobuoys have both active and passive abilities and are consumable, meaning they can only be used once.
the use of sonobuoys will make these aircraft more effective in conducting anti-submarine warfare, as sonobuoys can increase the probability of detecting enemy submarines.
the indian navy purchased three types of sonar buoys this time, namely an/ssq-53g, an/ssq-62f and an/ssq-36 high-altitude anti-submarine warfare sonar buoys.
a sonobuoy is a expendable electromechanical acoustic sensor that relays underwater sounds made by ships and submarines.
sonobuoys can remain active for about 24 hours, helping with reconnaissance, classification and other activities against enemy ships and submarines. they are usually dropped in a certain pattern by naval helicopters or fixed-wing aircraft.
the sonobuoy is lowered into the tank and automatically deploys upon contact with the water.
an inflatable system with a radio transmitter remains on the surface of the water to communicate with a ship or aircraft tracking it while the sensor sinks to a predetermined depth below the surface.
the sensors transmit acoustic information back to the monitors. a pattern of sonobuoys can reveal the submarine's exact location, which can then be tracked by other systems.
some sonobuoys are designed to be deployed passively, while others are designed to be deployed actively. active sonobuoys emit sound energy and receive echoes, and transmit information back to aircraft based on the echoes. on the other hand, passive sonobuoys can only listen to sounds from ships or submarines. (compiled by ma dan)
