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Author: Subject: Damn the Torpedoes! Phase II
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[*] posted on 10-10-2019 at 08:09 PM


Finland receives interim Torpedo System 45

Richard Scott - Jane's Navy International

10 October 2019

Finland has received Torpedo System 45 lightweight torpedo assets on loan from Sweden for installation on board the Hamina-class strike craft FNS Tornio .

The loan arrangement forms part of a wider bilateral co-operation, formalised by Sweden's Defence Materiel Administration (FMV) and the Finnish Defence Forces Logistic Command in early 2018, that also covers the new Torpedo System 47. Originally developed by Saab Dynamics for the Royal Swedish Navy, the Torpedo System 47 is also being supplied to the Finnish Navy's Hamina-class (Squadron 2000) mid-life upgrade programme.

As well as co-operative development and procurement of the Torpedo System 47, the bilateral arrangement also includes the loan of existing Torpedo System 45 assets to establish an interim capability.

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[*] posted on 10-1-2020 at 11:21 PM


Indian Navy will receive soon first batch of local-made Varunastra anti-submarine torpedo

Posted On Thursday, 09 January 2020 18:39

Indian Army will receive soon the first local-made anti-submarine torpedo Varunastra. The first batch of Varunastra torpedo will enter in service onboard of Sindhu class submarines and other warships of the Indian Navy.


Indian-made Varunastra anti-submarine torpedo. (Picture source Blog Nosint)

The Varunastra is an Indian advanced heavyweight anti-submarine torpedo, developed by Naval Science and Technological Laboratory of the DRDO (Defence Research and Development Organisation) for the Indian Navy. This torpedo has not been developed not only for use by the Indian Navy but will also be exported to other countries.

The Varunastra torpedo is powered by an electric propulsion system with multiple 250 KWs Silver Oxide Zinc (AgOZn) batteries. It can achieve speeds in excess of 40 kn (74 km/h; 46 mph), weighs around 1.25 tons and can carry 250 kg (550 lb) of a conventional warhead.

This torpedo has more than 95 percent of Indian content.

Varunastra has a conformal array transducer which enables it to look at wider angles than most common torpedoes. It also has advanced autonomous guidance algorithms with low drift navigational aids, insensitive warhead which can operate in various combat scenarios. It is the only torpedo in the world to have a GPS-based locating aid. The exercise variant of Varunastra has an integrated instrumentation system for recording all the dynamic parameters of the weapon, redundancy in recovery aids in case of emergency shut down or malfunction.

The Varunastra torpedo will be carried by Kolkata class, Rajput class, and Delhi class destroyers. It will also be fitted on to Kamorta class corvettes and Talwar class frigates. The Indian Navy will also use the Varunastra torpedo onboard Sindhughosh Class submarines.
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[*] posted on 25-2-2020 at 08:41 PM


25 February 2020 News

Aerojet to develop propulsion system for US Navy’s MK 54 torpedo


The Mark 54 torpedo can be deployed from a surface ship, helicopter or fixed-wing aircraft to attack underwater targets. Credit: US Navy/ Mass Communication Specialist 2nd Class Justin Wolpert.

The US Navy has awarded other transaction authority to Aerojet Rocketdyne to develop a new propulsion system for the MK 54 MOD 2 Advanced Lightweight Torpedo (ALWT).

For the $63.2m authority, the company will be responsible for the development of an advanced prototype stored chemical energy propulsion system (SCEPS) power plant and afterbody/tailcone that would be integrated into the ALWT.

The SCEPS will have the ability to improve the capabilities of the MK 54 torpedo.

Aerojet Rocketdyne CEO and president Eileen Drake said: “We have developed mission-critical propulsion and power systems for the US Navy for more than 60 years.

“Aerojet Rocketdyne is a world-class developer of high-performance propulsion systems and we look forward to applying our expertise to support the development of the Advanced Lightweight Torpedo.”

US surface ships, fixed-wing aircraft and helicopters use the antisubmarine warfare weapon MK 54 lightweight torpedo.

Co-developed by Raytheon Integrated Defense Systems and the US Navy, the Mark 54 can be deployed from a surface ship, helicopter or fixed-wing aircraft for tracking, classifying and attacking underwater targets.

It analyses the information, edits out false targets or countermeasures using sophisticated processing algorithms, and then pursues identified threats.

The MK 54 programme, which leverages latest torpedo technologies from the MK 50 and MK 48 advanced capability programmes, also makes use of the MK 46 warhead and propulsion subsystems.

The MK 54 is the next-generation of the MK 46 torpedo and can be incorporated into any modern navy with minimum conversion costs.

In March 2017, the US Navy awarded a contract to Aerojet to mature the demonstration capabilities of a power and energy management system for underwater unmanned vehicles (UUVs).
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[*] posted on 28-2-2020 at 11:57 AM


First batch of F21 torpedoes delivered to Brazil and France

Emmanuel Huberdeau, Paris - Jane's Navy International

27 February 2020


Naval Group delivered a first batch of six F21 torpedoes to the French Navy in November 2019. Source: Naval Group

Naval Group has delivered a first batch of F21 heavyweight torpedoes to the Brazilian and French navies.

Announcing the deliveries during a press conference in Paris on 21 February, Naval Group said a first batch of six torpedoes was handed over to the French Navy in November 2019, in addition to an undisclosed number to the Brazilian Navy.

The F21 heavyweight torpedo is being developed by Naval Group for the Direction Générale de l'Armement (DGA) under the auspices of the Artémis programme, which was launched in 2008. It will replace the F17 Mod 2 heavyweight torpedo that equips the French Navy's current inventory of submarines. The system will also be operated by the Brazilian Navy on its new Scorpène-class diesel-electric submarines.

Naval Group has been contracted to deliver 93 F21 torpedoes to the French Navy.

The F21 has an overall length of 6 m and weighs 1,320 kg. The propulsion system is powered by a silver oxide-aluminium primary battery enabling a maximum speed of more than 50 kt over a maximum range in excess of 50 km.

Initial sea trials with a prototype were carried out in the Mediterranean in the first quarter of 2013. From 2013-14, about 10 test launches were conducted, after which launches were interrupted for a time.

Launches resumed in 2017. In June that year the F21 completed a successful qualification in the Mediterranean, and in May 2018 Naval Group announced that it had been launched from a nuclear-powered attack submarine (SSN) at DGA's underwater test range off the south coast of France. According to Naval Group, the F21 used for this trial was identical to those under production for the French Navy.

A launch from France's first Barracuda SSN, Suffren , is expected to take place in 2020, Naval Group officials told Jane's .

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