Showing posts with label ASW. Show all posts
Showing posts with label ASW. Show all posts

Friday 22 April 2016

Go Win Something, Anything : Malaysia's Second Generation Patrol Vessels


Second Time Lucky?



In the 1990s, Malaysia perceived the need to replace its ageing Vosper 103ft Type patrol crafts ( PC ), tiny boats with a length of 31m displacing just 96 tons that had been in service since the 1960s. Known as the New Generation Patrol Vessel ( NGPV ) Project, the initial specifications called for a Offshore Patrol Vessel ( OPV ) design which displaced 1300 tons with a length of 80m. However, the winning bid, based on the Blohm + Voss MEKO 100 design, ended up displacing 1850 tons with a length of 91m, a size resembling a corvette rather than an OPV. The NGPV project was plagued by delays caused by quality control issues and cost overruns, and when it was finally concluded in 2010, yielded only six ships of the guns only KD Kedah-class out of the originally intended twenty seven. Given that situation, one may logically presume that the Royal Malaysian Navy ( RMN ) would be fairly desperate in need for new surface combatants to boost the strength of its Fleet.

Indeed in early 2011, Malaysia initiated the Second Generation Patrol Vessel ( SGPV ) Project which aims to provide the RMN with six stealth frigates by the end of the decade, a timely procurement, since by then, not counting the NGPVs, even the newest Lekiu-class frigate would have been in service for more than twenty years. Further more, with the increasingly belligerent stance of China in the South China Sea, many of the surrounding littoral states are locked in an urgent arms race to boost their naval capabilities. Malaysia cannot really afford another fiasco like the NGPV project, or can they?


The SGPV is based on the Gowind 2500 stealth ship. Image : DCNS




CGI : Gowind 2500 with hangar and helicopter in view. Image : DCNS




Second Generation Patrol Vessel - Littoral Combat Ship



Malaysia's next generation frigate programme is known as the Second Generation Patrol Vessel - Littoral Combat Ship ( SGPV-LCS ) Project. The name is somewhat misleading as the ships involved are essentially multi-mission frigates, major ocean-going surface combatants, rather than patrol vessels which generally implies a much smaller and lightly armed warship for close shore duties. The inclusion of the words Littoral Combat Ship may also cause unnecessary confusion with the US Navy's pre-existing Freedom-class and Independence-class Littoral Combat Ships.

The project was announced in early 2011 and originally involved six frigate type warships with stealth features displacing about 2700 tons. The budget for this project was MYR6billion, then worth about US$1.9billion. There were several contenders, including Germany's ThyssenKrupp Marine System with their subsidiary Blohm+Voss' MEKO 200 design, Dutch Damen Schelde Naval Shipbuilding with its Sigma-class 10514 and the French DCNS with the Gowind-class. TKMS being the parent company of Blohm+Voss was of course no stranger to Malaysia as it was closely involved with the NGPV project and was also the supplier of the older Kasturi-class light frigates while Damen had recently been successful in selling Indonesia its scalable Sigma 9113 corvettes and Sigma 10514 frigates. DCNS on the other hand supplied Singapore with its La Fayette-class derived Formidable-class stealth frigates and sold Malaysia their Scorpenes and Agosta-B submarines.

By end 2011, it emerged that the French Gowind based design had been chosen and a contract worth MYR9billion ( then USD2.8billion ) had been awarded to Boustead Naval Shipyard Sdn Bhd which will team up with DCNS to build the vessels locally at their Lumut yard. Boustead Naval Shipyard is one of many companies under the umbrella of Boustead Heavy Industries Corporation Berhad which is itself part of a bigger, publicly listed, government linked industrial conglomerate known as Boustead Holdings Berhad. So just what is a Gowind-class vessel?


DCNS's Gowind Family



The Gowind is DCNS's solution to littoral warfare. It is not a single vessel but a collection of warships types that spans several classes from entry level OPV types to higher end corvettes and light frigates. Just like the MEKOs and Sigmas, the Gowind's modular design makes it highly scalable. The vessels are all shaped to have a reduced radar cross-section signature and have additional stealth features as an integral part of their design, such as a single integrated mast where all the sensors are mounted. That replaced several sensor masts in older designs which tends to contribute to unnecessary clutter and increased reflection of radar waves. The main guns can be encased in stealth cupolas. The propulsion system is that of combined diesel and diesel ( CODAD ) configuration with no funnel stack to emit infra-red radiation. Instead the engine exhaust is dissipated as waterjets which also served to enhance the maneuverability of the ships especially in shallow waters.



Smoke and fumes from a VL Mica launch obscures the 16 cell vertical launch system
 behind the main gun while chaff has been dispensed aft of the Gowind 2500.
Image : DCNS 



The Gowind 1000 launches an anti-ship missile.
Note the array of 8 vertical launch cells on a raised portion behind the main gun.
Image : DCNS



The Gowind OPV now known as the OPV90 by Kership
serving in the French Navy as the L'Adroit. Image : Kership


The FS L'Adroit of the Marine Nationale at the Singapore Navy Open House in 2013.
Photo via Wikicommons.


Although DCNS's website list only two Gowind variants, the Gowind 1000, a 1500 ton lightly armed version for less demanding missions and the much bigger Gowind 2500, a 2500 ton multi-mission corvette type with significant anti-submarine capabilities, there are more variants including an OPV type now renamed the OPV90 that had been reassigned to Kership, a DCNS subsidiary. In fact DCNS even built one, the OPV L'Adroit, and loaned it to the French Navy for evaluations for a period of three years, seemingly free of charge. You can watch DCNS' video on the L'Adroit here.

All Gowind variants come complete with a helideck for helicopter and UAV operations while the larger vessels also feature a helicopter hangar. In DCNS's original configuration, the Gowind corvettes are armed with a 76mm main gun, two 20mm cannons, vertical launched MICA surface to air missiles and MM-40 Block 3 Exocet anti-ship missiles. In addition, the Gowind 2500 has two triple torpedo launchers as part of its ASW arsenal, though they are listed as only an option in the Gowind 1000.

The Gowind vessels are capable of operating unmanned systems, including unmanned aerial vehicles ( UAV ), unmanned underwater vehicles ( UUV ) and unmanned surface vehicles ( USV ).



Gowind 2500 Specifications and Characteristics. Source : DCNS


As of today, DCNS had already secured orders for 10 Gowind ships. Malaysia's 6 vessel contract was the first commercial success ( paid order ) for the type while the Egyptian Navy became the second customer with 4 vessels on order. All were presumably variants based on the design of the larger and more capable Gowind 2500 ( Malaysia ) or the Gowind 2500 base model itself ( Egypt ).





Malaysia's Gowind SGPV-LCS



Malaysia's finalized SGPV design is a frigate sized derivative of the Gowind 2500 corvette displacing 3100 tons, an increase from the initial proposed displacement of 2700 tons. With that there has also been a 50% increase in the acquisition cost from MYR6billion to MYR9billion. The price includes intellectual property rights and technology transfer, which could mean Malaysia owns the rights to the modified Gowind design and might be able to export it to interested third parties in the future. That is of course provided Boustead Naval Shipyard is able to build them according to specifications in the first place.



Malaysia's Gowind-class Second Generation Patrol Vessel- Littoral Combat Ship. Source : Boustead Naval Shipyard



These are some of the known specifications including sensors and armaments for the Gowind SGPV :

Length                     : 111 meters

Breath                      : 16 meters

Draught                   : 3.85 meters

Displacement          : 3100 tons

Propulsion               : Combined Diesel and Diesel ( CODAD )

Engine                     : 4 x MTU Diesel

Maximum Speed     : 28 knots

Range                      : 5000 nautical miles at 15 knots

Endurance               : 21 days

Complement           :  Up to 138

Combat System      : DCNS SETIS

Search Radar          : Thales Nederland SMART-S Mk 2 3D Multi-beam Radar

Fire Control Radar : Rheinmetall TMX/EO Mk II Fire Control Radar
                                 Rheinmetall TMEO Mk II Electro-Optical Tracking System

ESM                       : Thales VIGILE 100 Electronic Support Measures System
                                
Sonar                      : Thales CAPTAS-2 Variable Depth Sonar
                                  Hull Mounted Sonar ? Thales Bluewatcher

Communications    : Thales TUUM-6 underwater communications equipment
                                  Thales TSB 3520 ATC / IFF Combined Interrogator Transponder

Decoy                     : Wallop/Esterline Super Barricade Decoy System

Main Gun               : 1 x BAE Systems 57mm Mk3 Naval Gun in Stealth Cupola

Cannons                 : 2 x MSI Seahawk 30mm cannons

SAM                      : MBDA VL Mica in 16 Sylver ?A35 launchers

SSM                       : 2 x 4 Kongsberg Naval Strike Missile

Torpedo                 : 2 x J+S ( Now SEA ) 324mm Triple Torpedo Launcher

Helicopter              : EC725 Caracal / AugustaWestland Super Lynx 300 / Eurocopter AS350 Fennac

 

Constructing the SGPV



Unlike Egypt's 4 corvette deal with DCNS where the first-in-class would be constructed in France and the remaining three in Alexandria, Egypt, the Malaysians elected to have the entire batch of six frigates constructed locally at their Boustead Naval Shipbuilding ( BNS ) shipyard at Lumut, Perak. This was a bold decision, given that at that point of time the Lumut facilities were not quite built for the task of constructing the stealth frigates. A major upgrade had to be carried out with the help of DCNS before construction of the vessels could begin.

It was subsequently revealed that although the USD2.8billion contract was awarded to BNS / DCNS in 2011, it only went into effect on 14th July 2014, after the completion of  a massive infrastructure upgrade at the Lumut shipyard - ship lifts, block assembly halls, panel assembly halls and keel laying lines. The Malaysians even planned to have three ships in parallel construction at the yard. The Gowind contracts with Malaysia and Egypt was only confirmed by DCNS later that year.

Aerial view of the Boustead Naval Shipbuilding Lumut Shipyard at the mouth of
Sungai Manjung. Source : Boustead

BNS Lumut yard now seems to have upgraded shiplifts. Source : Boustead Naval Shipbuilding


Another view of BNS Lumut. Source : Boustead Naval Shipbuilding


Not only will the ships be constructed in Malaysia, even the combat system will be assembled and tested at the not too distant Cyberjaya town, part of the ex-ex-Prime Minister Mahathir's grandiose Multimedia Corridor and Malaysia's Silicon Valley wannabe. Potential systems suppliers and integrators are in a way forced to perform as much work on the ships as possible locally in Malaysia. In fact any foreign company who wish to participant in the SGPV project will probably have to agree to set up some joint venture with well connected locals or local companies, a regional headquarters here, a training facility there, some maintenance and servicing company to cater for subsequent repairs and upgrades, and so on and so forth. You get the idea.

To cite specific examples, J+S Ltd, a British company selected to supply the torpedo launch system for the SGPV, had opened an office in the Malaysian capital Kuala Lumpur to serve the ASEAN region. They also announced that they would be sourcing some products and services locally. Thales, the supplier of the Smart-Ass Mk2 naval surveillance radars will be building the first two systems in the Netherlands but the remaining four would be assembled and tested in Malaysia by a local company Contraves Advanced Devices Sdn Bhd which itself is jointly owned by who else but Boustead Heavy Industries Corporation and Rheinmetall Defence.

All these came as no surprise since Malaysia is a nation obsessed with offsets, technology transfers and industrial joint ventures, even to the extend of dabbling with bartering every once in a blue moon. For example, the €1.035billion scorpene submarine deal with DCN in 2002 obligated France to in return buy €230million worth of Malaysian palm oil, €92million of other commodities and invest  €138million for training and technology transfers to local Malaysian firms. There was allegedly also a spin off deal to increase the landing rights for Malaysia Airlines at the Charles de Gaulle Airport in Paris. Then there was the Sukhoi Su-30MKM deal that came with the condition that Russia help train and send a Malaysian astronaut to the International Space Station, which they eventually did as promised, and that happened in 2007. Even earlier, Yeltsin was partially paid in Malaysian palm oil for the MiG-29 deal ....

Construction of the yet to be named lead vessel started in Jun 2015 and would be completed in early 2019. The subsequent five ships would be completed at ten months interval thereafter, which means the last ship would be completed sometime in 2023. The image from Boustead Naval Yard seem to suggest the lead ship will be having the pennant number F177, continuing serially after the six Kedah-class NGPV which have pennant numbers from F171 to F176.


Keel laying signals the official start of the ship construction.
This is probably hull number 2. Image via RMN Tweet.


Strengths and Weaknesses



Malaysia's Gowind-class frigates are great warships with many advanced features and capabilities. Being brand new they also include the latest design trends and incorporate the latest technology in maritime security and naval warfare. At 3100 tons fully loaded, these are fairly large in size and that translates to better sea keeping, higher endurance and a higher level of comfort for the serving ship crew. As a class they should be able to execute their mission of protecting Malaysia's vast maritime interests well and form a credible deterrence against any potential aggression by regional countries. Unfortunately there are certain omissions that could have an adverse impact on the ship's combat capabilities. 

A main gun with a bigger caliber, like the 76mm ( 3 inch ) Oto Melara Super Rapid would be a better choice. Bigger guns have longer reach and make for better shore bombardment should that requirement ever arise, like when some rag tag militia force from some self proclaimed Philippine sultanate come occupying your outlaying islands. Even RMN's newest Kedah-class corvettes are armed with 76mm main guns. Stealth cupola or not 57mm just seem too small for a full fledged frigate. They are more suited for smaller surface combatants like corvettes and FAC.


The BAE Systems / Bofors 57mm Mk3 in stealth cupola on the Swedish Visby-class corvette. Photo : Wikipaedia



A pair of MSI Defence Systems Seahawk remotely controlled 30mm cannons on a gyro-stabilized, electrically operated mount with an electro-optical director is great for force protection against asymmetric threats like hordes of fast boats but it cannot double as a close-in weapon system ( CIWS ) for last line of defence against sea skimming anti-ship missiles and precision guided munitions ( PGM ). Without a dedicated gun-based CIWS, the SGPV in effect relies on the VL-MICA as a missile-based CIWS. No doubt the VL MICA does have anti-missile capabilities, but would you put all your eggs in one basket?


The choice of short ranged VL Mica for the frigates' air defence is also not ideal. Although the VL Mica is an extremely capable and proven design which combines compactness and light weight with a short reaction time, high rate of fire and multi-target capabilities ( including missiles and PGM ), its Achilles Heel is really its relatively short range of up to 20km. Its maneuverability rapidly falls from 50G at 7km to 30G at 12km as kinetic energy is bled off with increasing distance from the point of launch. It is good for point defence but would not be so suitable for area defence. So the VL Mica might be perfect for a smaller vessel like the NGPV but I would expect a frigate to be able to provide task force-wide area defence. Assuming that the Gowind frigate has the shortest Sylver A35 chosen, having a longer vertical launch system ( VLS ) like the A43 or A50 which can accommodate longer ranged surface-to-air missiles like the MBDA Aster 15 or Aster 30 respectively would have been a better choice.


Ditching the MM40 Block III Exocet in favour of the Kongsberg Naval Strike Missile ( NSM ) could prove to be a good move. Both have anti-ship, littoral and coastal attack capabilities, both have effective range in excess of 100 nautical miles but the NSM is a much more contemporary design whereas the Exocet could trace its lineage to the 1970s. It is true that compared to even the MM40 Block II, the Block III is like a radically new missile, but the RMN already has in its service the SM39 and the MM40 Block II. So it might not be a bad idea to diversify the SSM inventory with the NSM so as not to be to overly reliant on one supplier. The NSM would give the RMN's surface fleet enhanced land attack capabilities in addition to its anti-ship role.


A model of the Kongsberg Naval Strike Missile on display. Photo : Wikipaedia


The Kongsberg Naval Strike Missile successfully being test fired on the
USN Littoral Combat Ship LCS4 USS Coronado in July 2014. Photo : USN 



The selected surveillance radar, the Thales SMART-S Mk2, is a capable radar system that has already been installed on corvettes and frigates of many navies, including Germany's Brandenburg-class frigates and as a future upgrade for New Zealand's ANZAC-class frigate. The acronym stands for Signaal Multibeam Acquisition Radar for Tracking, S-Band. It is a medium to long range air and surface multibeam passive electronically scanned array ( PESA ) 3D radar designed by Thales Nederland ( formally Thomson-CSF Signaal ) and as the name implies, operates in the S-Band ( with frequencies between 2 - 4 GHz, also known as E/F-Band in NATO nomenclature ). Its maximum instrumented range is 250km against air targets and 80km against surface targets. It can automatically detect and track up to a total of 750 air and surface targets simultaneously. Easy to use with only two operational mode and minimal operation system settings, the SMART-S Mk2 also features high operational availability through the use of solid state technology and ease of maintenance with line-replaceable-units that are easy to exchange when defective.


The Thales CAPTAS-2 / UMS 4229 long range low frequency active and passive variable depth sonar ( VDS ) is a compact and versatile detection system for medium ASW platforms 1500 tons and above. CAPTAS is the acronym for Combined Active and Passive Towed Array Sonar and it comes in three versions for vessels of different sizes, CAPTAS-1, -2 and -4. A VDS essentially enables the ASW unit to transmit and receive at the right depth to maximise the detection of very quiet modern diesel-electric submarines such as the Russian Kilo-class or Chinese Type 39A Yuen-class SSK. The CAPTAS-2 is rugged, operational up to sea state 6, and has a maximum operational depth of 250m. The detection performance is listed by Thales as beyond the first oceanic convergence zone which means in excess of 20 to 30 nautical miles. It has embedded torpedo defence capability and multi-platform operation capability with two frigates in the same area. In times of emergency, such as torpedo avoidance, the towed array can withstand towing at 30 knots. Deployment and retrieving of the towed array can be completed in 20 minutes. The CAPTAS family of VDS has already ben installed or selected for more than 40 ships including the FREMM frigates of the French, Italian and Moroccan Navies. You can watch a video of the smaller CAPTAS-1 and BlueWatcher hull-mounted sonar in action here.




Hull-mounted sonar fails to detect enemy submarine hiding beneath
thermal layer but the variable depth sonar's dual-towed
receiver array and transmitting body are deployed at the optimal depth.
Source : Advanced Acoustic Concepts / DRS Thales




The Thales CAPTAS-2 towed body. Image : Thales



The CAPTAS-1 with its winch can be installed in a containerized system
below the helideck. Image : Thales


The transmitting Towed Body attached to the winch cable. Image : Thales

CAPTAS-1 VDS Single Tow : The Body ( seen transmitting ) tows the Receive Array. Image : Thales 

The electronic support measures ( ESM ) suite chosen was the Thales Vigile 100 system. The vigile family is Thales' 4th generation ESM system tailored for naval applications for both surface and sub-surface units. According to the manufacturer, it provides wide band ( C to J Bands ), high sensitivity receptions and pulse analysis with the ability to detect low probability of intercept (LPI) or invisible hostile radars using ultra sensitive search mode. It also supports electronic intelligence (ELINT), precise de-interleaving, and specific emitter identification/platform identification using ESM tasked mode measuring signals frequency, phase and amplitude.

Although the Gowind-class incorporates the latest technology and is purpose-designed to be able to operate unmanned systems, Malaysia seem to have decided not to equip its new frigates with any unmanned aerial vehicles as originally planned, like the VTOL Airbus Tanan. This is puzzling as UAVs can be valuable assets to augment existing capabilities and are a force multiplier for any platform, big or small. Then again, nothing that Malaysia does make much sense to us most of the time. This omission may cost the RMN in the future.

.
The Airbus Tanan VTOL UAS with Gowind 2500. Image : Thales


Airbus Tanan UAS and frigate with variable depth sonar. Image : Airbus


Trail Blazing with the Gowind Stealth Frigate



Malaysia's decision to go with the wind and select the Gowind 2500-class as a basis for its SGPV-LCS future frigate programme could be viewed as a bold trail blazing move. This is because they are the type's first real, paying customer, internationally or otherwise. Even the French Navy does not own any. The OPV FS L'Adroit is not counted as it is on loan to the navy for evaluation and perhaps publicity, and it was for free. So actually till today nobody has built a frigate sized Gowind before. New platforms usually have their fair share of teething problems and the SGPV will no doubt face similar issues. More so if it were to be constructed outside France. The decision to construct everything in Malaysia could represent a good opportunity for local companies to benefit from technology transfers and generate much needed jobs for Malaysian workers. If not implemented properly, it might just lead to the same delays and cost overruns that plague the previous NGPV project. However, with an experienced stealth ship builder like DCNS providing technical expertise and support, such problems might hopefully be minimized.

Questions remain as to why the cost of the six ships was allowed to balloon from the initial budgeted  MYR6billion to MYR9billion. It is puzzling especially considering that the ships' combat systems, though capable, are not all entirely top of the line and many of the systems initially desired by the RMN were eventually scaled down or opted out, like the UAV. Also, why has the tonnage to increase from the originally planned 2700 tons to the finalized 3100 tons? Either RMN doesn't know what it needs or its decision is too easily swayed by the vendor's marketing antics, or both. Could the mere increase in tonnage account for such a vast price rise or is Malaysia also paying so much more because it wanted to retain the intellectual property rights to the frigate's designs? If so is it a wise decision given the current poor economical and political situation in Malaysia? The final bill for the six ships will likely be much higher than MYR9billion due to currency exchange fluctuations in favour of the Euro / US Dollar as the Ringgit had weaken considerably in the past five years since the project had began and it is unlikely to strengthen in the near future. In this scandal prone country, could it be another bribery scam in the making, perhaps even with another murder or two thrown in as well?

Looking at the dilapidated state of the RMN today, with only six semi-equipped OPVs, two barely there post-SLEP corvettes and two ageing frigates forming the core of the surface combatants, the induction of these Gowind frigates into the Fleet will undoubtedly be keenly anticipated by the Malaysians. When that day arrives, the Malaysian Navy can at least claim parity with regional navies like the Indonesian Navy and the Singapore Navy and declare that they also own and operate stealth vessels, in the process Winning back some lost prestige.

Wednesday 17 June 2009

AIP Submarines For RSN



The New Archer-Class ( ex-Vastergotland Class ) Submarine





HMS Sodermanland was a Vastergotland-class SSK that was upgraded in 2003 with AIP.
Seen here in a 2010 photo. Photo via Wikicommons




In case you do not know, RSN stands for the Republic of Singapore Navy. The RSN has been operating submarines since 1995, when a total of 5 ex-Swedish Navy A-11 Sjöormen Class SSKs ( Diesel-electric Attack Submarines ) were acquired when they were being retired by the Swedes. These old boats were all launched between the years 1967 to 1968 making them more than 25 years old when they were sold to Singapore.

However, they were extensively refurbished and modernised by Kockums AB of Sweden ( now SAAB as of 2015 ) for operations in tropical climate before being re-commissioned for the RSN as the RSS Challenger Class submarines. Four of these boats form the backbone of the 171 Squadron while the fifth boat is cannabilised for spares.

The RSN subsequently acquired another 2 submarines from Sweden in late 2005, the A-17 Vastergotland Class SSK, which had been retired from service by the RSwN ( Royal Swedish Navy ). Again, Kockums AB was engaged to refurbish these submarines. At that time little else was announced about the deal, especially whether the refurbished boats will have Air-Independent Propulsion (AIP) technology*. Today, 16th Jun 2009, the public learnt from the daily newspapers and MINDEF releases that these two boats are the RSS Archer and RSS Swordsman. RSS Archer has been launched at Kockums AB yard at Karlskrona by Mrs Teo Chee Hian, wife of the DPM / Minister for Defense.

Swedish newspapers reported that the Vastergotland deal was worth SEK 1 billion, then equivalent to US$135 million.
 


Launch of the RSS Archer at Kockums Shipyard in Karlskrona 16th Jun 2009.
Photosource : Kockums AB Photographer : Peter Nilsson 

What is Air Independent Propulsion?



AIP is simply a non-nuclear submarine propulsion system that works without requiring an external supply of air. It allows a conventional ( non-nuclear ) submarine to remain submerged for a longer period of time compared with their diesel-electric cousins as the AIP engine negates the need for an external supply of air / oxygen.
 
Diesel-electric submarines have batteries that need to be recharged by their diesel engines every now and then when they are depleted. Running the diesel engines require air / oxygen that can only be supplied when the submarine is either on the surface or when it is snorkeling. When snorkeling, the submarine stays submerged just beneath the surface but sticks its snorkel mast up to suck in air and expel diesel exhaust.

These activities put the submarine at increased risk of being detected by visual or infra-red sighting, radar reflection from the snorkeling mast or conning tower, magnetic anomaly disturbances or by the acoustic signature of the noisy diesel engines.

With AIP, all of the above risks normally associated with battery recharging will be eliminated. It allows the submarine to remain submerged for 2 weeks or more and makes the AIP submarine much stealthier than its diesel-electric counterpart.

The AIP Integrator



Kockums AB is the Swedish shipyard owned by Germany's ThyssenKrupp Marine Systems after a series of mergers and acquisitions starting from 1999. They have been building quality submarines for Sweden since 1912 and were the first in the world to produce a purpose-built AIP submarine the A-19 Gotland-class. While the RSwN retired the HMS Vastergotland and her sister ship HMS Halsingland, it chose to upgrade the newer two ships, the HMS Sodermanland and the HMS Ostergotland to being AIP capable using Kockum AB's proprietary AIP Stirling Engine. Kockums basically cut the submarines into two at mid section and lengthened the hull to accommodate the new Stirling Engine. The Stirling AIP uses diesel and oxygen in a closed system. The upgrade is so radical that the 2 boats are considered a new class of their own - the Sodermanland Class.
 
 

Royal Swedish Navy : All AIP Fleet


 
With the completion of the Sodermanland-class upgrade, the Royal Swedish Navy became the only navy in the world to have an entirely AIP capable submarine fleet. Nobody else could have that claim. Who else better to turn to when you need AIP submarines than the Swedes? They are the experts!


The A17 HMS Vastergotland ( left ) and the more advanced
A19 Gotland-class HMS Uppland  along side at Malmo, Sweden.
Photo taken in 2003 before the Vastergotland was sold to Singapore. Wikicommons


HMS Sodermanland and the submarine rescue ship A-214 HMS Belos in 2003. Wikicommons


 

Blue Water vs Brown Water



The US Navy commissioned the world's first operational nuclear submarine the USS Nautilus (SSN-571) in 1954 and never looked back. Their last batch of conventional diesel-electric submarine, the Barbel-class, was ordered between 1955 to 1956 and all had been retired by 1990. They now have an exclusively nuclear underwater fleet which is extremely effective for blue water ( open ocean ) operations which require long endurances. The Swedes however, have vastly different requirements where they have huge swaths of coastlines with deep narrow fjords to patrol. The salinity and temperature of the Baltic Sea are also very different from that of the open oceans and therefore the Swedes have long settled with conventionally powered submarines.
 
Singapore is a littoral state with plenty of shallow, murky waters and busy, noisy sea lanes. The small Swedish SSKs are well suited for this kind of underwater environment. Besides, modern diesel-electric submarines, like the Russian Type 636 improved Kilo Class SSK, can be extremely quiet especially when they are drifting or moving very slowly ( less than 5 Knots ). In fact, the RSwN HMS Gotland was "leased" to the USN for 2 years between 2005 to 2007, complete with crew, for bilateral anti-submarine exercises. Uncle Sam will not need to practice ASW with HMS Gotland if it was not quiet!



Growth of RSN's ASW Capabilities



The Anti-Submarine Warfare (ASW) capabilities of the RSN has grown in leaps and bounds ever since its early days of operating the Seawolf-class missile gunboats ( since retired ). In the 80s came the Victory Class missile corvettes with their variable depth sonar and Whitehead Alenia torpedoes. The 90s saw the addition of the Fearless Class ASW Patrol Vessels and of course, the best ASW platform, the Challenger Class SSKs.
The missile corvettes and the patrol vessels are both too small to accommodate any ASW helicopters. That glaring deficiency has since been rectified with the purchase of the Formidable Class stealth frigates which will carry the Sikorsky S70B Seahawk ASW helicopter, assumingly with magnetic anomaly detectors and towed array sonars plus offensive weapons like the mk46 torpedoes.
With the commissioning of the RSS Archer and Swordsman due in ?2010/2011, the RSN will have AIP technology among its submarine fleet and significantly increase its reach.
We must also not forget the aerial assets of the RSN, the Fokker F50 maritime patrol aircraft, in operation with the 121 Squadron since 1993, which acts as a force multiplier when dealing with naval threats.





What Singapore's Neighbours Have or Are Acquiring



The Malaysians have received their first of 2 Scorpene Class SSK earlier this year, the KD Tunku Abdul Rahman. These Scorpenes are not AIP endowed, unlike their more capable Spanish S-80 / S-80A cousins with the MESMA AIP engine which uses ethanol and compressed oxygen. They have another older Agosta B SSK based in France for training purposes. Since these were bought in 2002 during Malaysia's M-Era, the officially stated RM3.4billion package came with certain landing rights at the Charles de Gulle Airport for MAS as well. Maybe they could have had 3 scorpenes for the same price ( or 2 scorpene basic-AIPs ) had they not insisted on those landing rights, or having to pay the hundred over million ringgit of brokerage fees, or.... I digress. The second boat KD Tun Razak is due to be commissioned later this year.

The Indonesians have 2 ageing Type 209 / 1300 Cakra Class SSK since 1981. They have been recently upgraded by the South Koreans who also operate the Type 206 / Type 209 submarine. The Type 209 is one of the most widely exported submarine from the West. They have made an agreement with Putin in 2007 to buy among other things, 2 Type 636 Kilo Class SSK plus options for another 8 more. These orders have yet to be fulfilled.

Thailand has no submarine fleet but are eager to acquire one. Earlier efforts by Sweden to sell them the A19 Gotland Class submarine have failed to materialise. Most of the money could have gone into financing their purchase of the 12 SAAB JAS-39 Gripen fighters and the 2 SAAB S-1000 Erieye AEW. Air Force 1 Navy 0.

Vietnam has 2 ex-Yugoslav minisubs for special forces operations and has recently ( Apr 09 ) agreed in principle to buy 6 Russian Type 636 Kilo Class SSK. Pegged at USD1.8Billion these are said to be originally the ones ordered by Venezuela, but with Hugo Chavez's falling oil fortunes are now going to Vietnam.

Australia has 6 Type 471 Collins Class Diesel-electric SSK designed by Kockums AB. These are among the world's largest non-nuclear submarines displacing 3350tons submerged suited to patrolling the vast coastlines of Australia. They are quiet and capable boats with a large weapons load including the Boeing Sub-Harpoon anti-ship missile and the Mk48 ADCAP torpedoes. They can be retrofitted with AIP engines. Following a bad start with lots of delays and deficiencies, these boats have been upgraded with a combat control system from Raytheon similar to the one in the Virginia Class SSN of the US Navy.

The New Zealanders are on good terms with the Aussies and do not have any perceived threats in their immediate vicinity. The Helen Clarke Government retired the last of their 1950 era McDonnell Douglas A-4Ks without any replacement. Their air force now only operates helicopters and transports. The RNZN does not own any submarines.


The Future



What next after the RSS Archer? The RSN will probably retire part of its Challenger Class fleet upon arrival of the RSS Archer and RSS Swordsman. They can be mothballed or be used as a training submarine or be cannibalized for spare parts. Once its AIP operational experience has been gained, it can either look to acquire the A-19 Gotland Class when the Swedes are ready to retire them or consider other advanced options like the German HDW U212 / U214 AIP SSKs or the Russian Amur 1650 / Amur 950 / Kilo SSKs or God forbid, the DCNS / Navantia Scorpene SSK.

Update 2013



RSS Archer and Swordsman have both been commissioned. The 4 older Challenger Class submarines are still operational. There are now rumours that RSN could be interested in the latest Swedish A26 Class submarine.

The Collins Class SSKs of Australia is still plagued by generator and sonar problems. Only one out of six ship is currently operational. The RAN is looking to acquire 12 new enhanced-Collins type submarines as their replacement.

Indonesia bought 3 Type 209 / 1400s from South Korea.

Malaysia has received Exocet missiles with land attack capabilities for their Scorpene submarines, range about 180km .....

Update 3rd Dec 2013



In the Straits Times : The Republic of Singapore Navy will be acquiring 2 customized Type 218SG AIP submarines from HDW Kiel. They are likely to be ready by 2020. Two of the older Challenger class non-AIP submarines will be retired.