Indonesia recibe contramedidas contra torpedos de origen turco

Indonesia Takes Delivery of Torpedo Countermeasures from Turkey

An effector from Aselsan’s Zoka range of torpedo countermeasure jammers and decoys (photo : defence.pk)


A consignment of acoustic torpedo countermeasure jammers and decoys meant for the Indonesian Navy’s (Tentara Nasional Indonesia – Angkatan Laut: TNI-AL’s) Nagapasa (Type 209/1400)-class diesel-electric submarines has arrived in-country.

The equipment, which was delivered by Turkish defence company Aselsan as part of a contract signed in 2019, arrived in Indonesia on 22 October, Janes has confirmed with an industry source close to the matter.

Citing an official from Aselsan, Janes first reported in March 2019 that Indonesia had selected the Zoka range of jammers and decoys for the Nagapasa class.

The jammers work by emitting noises that saturate the acoustic operating frequencies of known torpedoes on the market, while the decoys can be programmed to simulate the acoustic and hydrographic characteristics of its host submarine.

These effectors are launched from Aselsan’s Zargana dispenser system, which can deploy up to 24 decoys or jammers in single-shot or salvo modes, without generating any air bubbles that may compromise the host submarine’s position.

This dispenser system is platform- and system-agnostic, and can be integrated into the host vessel’s existing combat management systems without the need for dedicated consoles.

State-owned shipbuilder PT PAL will be working with engineers from Aselsan to integrate the system onboard all three Nagapasa-class boats.

Indonesia signed for three Type 209/1400 boats with South Korean company Daewoo Shipbuilding and Marine Engineering (DSME) in 2011. The TNI-AL has inducted two boats in the class, Nagapasa (403) and Ardadedali (404), and is awaiting the commissioning of the final boat, Alugoro (405).

Jane's

Contramedidas para torpedos en exhibición

Ultra Electronics Positions New Torpedo Countermeasures for SEA 1000

A mock-up of the Deceptor and Defender torpedo countermeasures, on display at Pacific 2017

Ultra Electronics is showcasing the latest models of its Defender and Deceptor series of torpedo countermeasures, with an eye on Australia’s SEA 1000 programme.

The new series, which are due for commercial production in 2018, feature programmable motion and acoustic plans that can better defeat the latest generation of torpedoes in the market today, said Douglas Burd, managing director of Ultra Electronics, in an interview with Jane’s at the Pacific 2017 exhibition in Sydney.

The Defender is a 1,000 mm by 100 mm vertically mobile countermeasure system that defeats torpedoes by luring it either upwards or downwards. The system transmits an acoustic signal to seduce torpedoes in a 360-degree direction horizontally, and can ascend and descend at a rate of about 1 m per second.

Meanwhile, the Deceptor is a fully swimmable countermeasure that works by luring an offending torpedo away from its intended target on the vertical and horizontal planes. The system is also encapsulated within a 1,000 mm by 100 mm unit, and has top swim speed of between 6 kt and 8 kt.

When deployed on submarines, the Defender and Deceptor systems can be launched at a maximum operating speed of 25 kt, and a maximum launch depth of 400 m. The countermeasures can operate in temperatures of between 0o and 30o Celsius.

Jane's