Showing posts with label ST Marine. Show all posts
Showing posts with label ST Marine. Show all posts

Wednesday 15 July 2015

Bigger, Meaner And Leaner : Singapore's Independence-Class Littoral Mission Vessel





RSS Independence in 2016. Photo : MINDEF




Smarter, Faster And Sharper?


The official MINDEF news release announcing the launch of the Republic of Singapore Navy's ( RSN ) first of eight littoral mission vessels ( LMV ) on the 3rd of July 2015 screamed : Smarter, Faster And Sharper : Singapore Navy Launches First Littoral Mission Vessel. Personally, I think Bigger, Meaner And Leaner might describe these new ships better. Read on to find out.




The Littoral Mission Vessel at a glance. Source : MINDEF





Littoral Mission Vessel



What's a littoral mission vessel? A littoral mission vessel or LMV is simply a large offshore patrol vessel ( OPV ) if you are more familiar with that term. As the name implies, they are supposed to operate in littoral environments, that is, shallow coastal waters not too far from the shore. They are also designed to be modular and configurable for different missions. The 8 LMVs planned are to replace 11 of the RSN's existing Fearless-class Patrol Vessels ( PV ) which have been in service since 1997.

Their primary mission is to ensure the maritime security of the Port of Singapore and the surrounding territorial waters, ultimately contributing towards the seaward defense of Singapore. They are the work horses of the Navy.




The RSN's early generation Patrol Craft was replaced by the
Patrol Vessels in 1997. The PV will in turn be replaced
by the LMV. Source : Republic of Singapore Navy


After holding a name-the-vessel contest earlier in the year, the RSN selected eight names that reflected the theme of Singapore's nationhood. These are also ideals that Singapore's pioneers and the founding Prime Minister, the late Mr Lee Kuan Yew, fought for, as well as the attributes that they exemplified. They will be named RSS Independence, RSS Sovereignty, RSS Unity, RSS Justice, RSS Indomitable, RSS Fortitude, RSS Dauntless, and RSS Fearless. Collectively, they are the Independence-class Littoral Mission Vessels.

The LMV is jointly designed by local ship builder Singapore Technologies Marine ( ST Marine ) and SAAB Kockums AB of Sweden, working closely with the Defense Science and Technology Agency ( DSTA ), taking into account the unique requirements of the RSN. Apart from submarines, Kockums is also famous for building Sweden's iconic Visby-class stealth corvettes and would no doubt have brought to the table their wealth of experience in the designing and building of low observability vessels.

The contract to build the LMVs was awarded to ST Marine in 2013. The ships are being constructed at ST Marine's Benoi Shipyard at the Jurong Industrial Area. According to MINDEF, the first LMV is scheduled to be delivered in 1Q2016 and all are expected to be fully operational by the year 2020, by which time the existing PV fleet would have reached the end of their operational life after being in service for more than 20 years.




Launch of the RSS Independence at ST Marine's Benoi shipyard
on 3rd July 2015. Source : RSN



RSS Independence was launched by Dr Ivy Lim, wife of the
Minister for Defence Dr Ng Eng Hen. Source : RSN


One look at the LMV's exterior, especially of the rounded composite mast, and you would have realised that stealth is an inherent part of the ship's design. There are also no funnels to discharge engine exhaust and emit infra-red signature. Stealth technology has found its way to almost every class of modern warships nowadays and the Navy would be foolish not to embrace it.

Not so immediately obvious is the fact that the LMV is also purpose designed around the theme of minimizing manpower requirements. In fact I could argue that the LMV owed its existence mainly to the lack of manpower within the RSN. Anything that can be automated would have been automated. The ship's sensor, weapons and systems are constructed to allow for easy accessibility and simple maintenance. The LMV's layout is also such that all the major command and control centres of the ship are integrated together at the same location at the bridge. This co-location of the Bridge ( command and navigation ), Combat Information Centre or CIC ( sensors and weapons ), the Machinery Control Room or MCR ( engineering ), is known as the Integrated Command Centre and it integrates and synergises the management of navigation, engineering and combat functions.

On the other hand, it could also mean that a hit at the bridge could wipe out the entire command of the ship. To realise how radical this integrated concept is, just take a look at RSN's Victory-class missile corvettes ( MCV ) which are a generation older. The CIC is actually located two decks below the bridge and the two centres are physically linked by a steep flight of spiral stairs. When the ship closes up for Action Station, the commanding officer is at the bridge while his deputy, the executive officer, is in the CIC. That way a single hit cannot take out all the senior command.




LMV sailing across a console displaying a digital map of Singapore :
a networked, everything integrated ship. Source : RSN





The LMV is marginally faster than the PV which has a
maximum speed of 22 knots. It has a helideck that can
accommodate a medium-lift helicopter including the S-70B
shown above. It can also deploy up to two RHIBs.





Superior suite of sensors : LMV superimposed on digital map of
Australia / Indo-Pacific. Could an up scaled version
be the Armidale-class replacement that the RAN is looking for?  Source : RSN


LMV Characteristics


Length             : 80m
Beam               : 12m
Draught           :  3m
Displacement  : 1250 tonnes
Speed              : In excess of 27 knots
Endurance       : 3500 nautical miles ( 14 days )
Complement   : 23 ( including 5 Officers )
Engines           : 4 x MTU 20V 4000 M93L diesel engines.
Configuration  : Combined Diesel and Diesel ( CODAD )

Sensors           :  Thales NS100 3D surveillance radar
                          Kelvin Hughes SharpEye Navigation Radar
                          Stelop Compass D Electro-Optic Director
                          Stelop 360 All-Round Surveillance System

Weapons        :  OTO Melara 76.2mm Super Rapide Main Gun
                         Rafael 25mm Tyhoon Remote Weapon Station
                         2 x OTO Melara 12.7mm Hitrole RWS
                         12 x MDBA VL-Mica
                         2 x LRAD Long Range Acoustic Device
                         2 x Water Cannon System

Others             : Helicopter Deck for one Medium Lift Helicopter
                         Launch and Recovery System for 2 x RHIBs
                         or Protector USV











MTU 20V 4000 M93L Diesel Engines



MTU has been providing diesel engines to power RSN ships for many years. The MCVs, PVs, FFGs are all powered by MTU diesels. RSN has now selected MTU's 20V 4000 M93L diesel engine for the LMVs.  This compact engine has 20 cylinders in V configuration. The cylinders have a bore of 170mm and a stroke of 190mm so each will have a displacement of 4.313 litres. Multiply that by 20 and you get the total displacement of 86.26 litres for each engine. Fuel consumption is said to be 1135.7 litres per hour and each engine weighs 15587 kg. The LMV will be equipped with four of these engines, known for their low consumption and long service life, with each unit producing 4300kW (5766bhp) at 2100 rpm. From the product data sheet " MTU Series 4000 diesel engines offer unrivalled power density in terms of volume-to power ratio and power-to-weight ratio. ". A good choice for a small vessel.




The MTU Series 4000 V20 Diesel displacing 86260 cc.
Four will power each LMV. Source : MTU



Thales NS100 3D Naval Air And Surface Surveillance Radar



The NS100 is Thales' new generation of 3D air and surface surveillance naval radar which combines state of the art S Band Active Electronically Scanned Array ( AESA ) antenna technology and dual axis multi-beam processing. This new concept enables simultaneous detection of a large variety of targets from fast jets to hovering helicopters to sea skimming missiles to high diving munitions to small UAVs, all in one single mode.

The NS100 can be integrated with other sensors like the Scout Mk3 FMCW Radar for LPI ( Low Probability of Intercept ) and dual band surface surveillance, IR camera for nearby situational awareness, AIS ( Automatic Identification System for ships ), ADS-B ( Automatic Dependent Surveillance - Broadcast for air traffic management ), and IFF ( Identification Friend or Foe ) interrogator and transponder. This creates a multi-sensor integrated solution saving space and also optimizes overall field of view when all sensors are positioned together topside.

The NS100 has an instrumented range of 200km. It is capable of 3D air surveillance and weapon support for active missiles, 2D surface surveillance, surface gun fire support, jammer surveillance and IFF interrogation support. It has a physical dimension of 3m by 3m. Its MTBCF ( mean time before critical failure ) is 3000 hours. A mean radar for a small ship.

 


The Thales NS100 3D radar. Source : Thales


 Kelvin Hughes SharpEye Navigation Radar



The SharpEye solid state radar system is a digital radar technology that is available in X and S Band frequencies. It is an affordable navigation and surface search pulse Doppler radar sensor offering high reliability ( solid state, no moving parts, no magnetron, low maintenance ), low cost of ownership, and improved detection ranges especially of small targets in clutter ( think inclement weather, high sea states ).


The Kelvin Hughes Sharpeye Navigation Radar's upmast transceiver. Source : Kelvin Hughes



Traditional radar in heavy rain : details lost in heavy clutter



SharpEye in heavy rain : minimal clutter


STELOP 360 All-Round Surveillance System and Compass D Electro-Optic Director



There is not much publicly available information regarding these STELOP products but I guess the 360 could be a all-weather day and night high resolution camera system. The Compass D could be an imagery system for target identification. STELOP is a subsidiary company of ST Engineering, a sister company of ST Marine.


 OTO Melara 76/62 Super Rapid Gun Mount 



The Italian made OTO Melara 76.2mm Super Rapid naval gun can be found on almost every major RSN surface combatant starting from the Victory-class missile corvettes in the eighties, with the trend continuing in the Fearless-class patrol vessels, the Endurance-class landing platform dock, the Formidable-class stealth frigates and now the LMVs. This light weight and space saving 62 calibre gun can be mounted on relatively small ships and has a maximum rate of fire of 120 rounds per minute. It can be used against surface as well as air threats, including missiles, up to a maximum range of 16km. The barrel can be elevated from -15° to +85°. Automatic loading is provided through a below deck revolving magazine which holds 80 rounds and rapid reloading is easily undertaken even during firing action by two ammunition handlers.




The OTO Melara 76/62 Super Rapide Gun Mount on the missile corvette RSS Valour circa 1999. Source Wikipedia


Rafael 25mm Typhoon RWS



The Rafael Typhoon is a light weight, stabilized, remotely controlled weapons station that can be mounted with various small and medium calibre guns, as well as missiles, grenade launchers and even decoys. In this case it is mated with a M242 Bushmaster 25mm chain gun. The on-mount electro-optical director has colour CCD for day operations, FLIR for night operations, and an eye-safe laser range finder. It has its own ballistic computer for calculating firing solutions and an automatic tracker. The entire mount weighs less than 1000kg and does not require deck penetration making it ideal for small vessels. One stern facing Typhoon RWS will be installed on the LMV. They will be used for force protection especially against asymmetrical threats like a swarm of fast boats. They are also found on the RSN's Endurance-class LPD and Formidable-class FFGs with two mounted on each ship.



The 25mm Typhoon RWS is also known in the USN as the
Mk38 Mod2 seen here on DDG-103 circa 2013.
Note the on-mount EO director. Source : US Navy.

OTO Melara 12.7mm Hitrole RWS



The OTO Melara 12.7mm Hitrole remotely controlled naval turret is rather similar to the Typhoon RWS except it has a smaller calibre. Hitrole is the acronym for Highly Integrated Turret, Remote, Overhead, Light, Electrical. It is gyro-stabilized. Two of these would be installed at the bridge-wing area, port and starboard. They would replace the traditional 4 x Chartered Industries of Singapore CIS 0.5in Heavy Machine Guns mounted all around the bridge-wing on the older RSN vessels.



The OTO Melara 12.7mm Hitrole Remote Controlled Naval Turret.
Source : OTO Melara

MBDA Missile Systems VL-MICA


The MBDA VL-Mica is a short range vertical launch surface to air missile for point and close-area defense. It offers all weather capability against a wide range of aerial threats including aircrafts, helicopters, missiles, precision guided munitions and smart bombs in a modular and compact setup. It also features autonomous guidance and extremely short reaction time and has multiple target capability for defense against saturation anti-ship attacks. The MICA missile is available with two different seekers - Infrared (IR) and Radio Frequency (RF), both highly resistant to countermeasures and decoys, ensuring a high hit probability. The VL-MICA will be deployed in a 12 cell vertical launch system ( VLS ) in the forward section of the LMV just aft of the OTO Melara main gun. They have never been previously deployed in the RSN and are far more capable than the Mistral missile found on the PVs and perhaps the Barak missile on the MCVs as well.




The MBDA VL-MICA at launch. Source : MBDA



The VL-MICA vertical launch system seen here in a 12 cell configuration.
Source : MBDA


VL-MICA missiles with heat seeking IR seeker ( top ) and
 radar guided RF seeker ( bottom ). MBDA


VL-MICA with IR seeker inside VLS. Source : MBDA


The LRAD 1000RX



LRAD Corporation has many different products for its clients from the ultra portable to the heavy weight for vessels and land installations. I must admit I am not certain if it is this particular model that the RSN has chosen for the LMV but the 1000RX resembles the shape of the LRAD seen in RSN's full scale bridge mockup.

The LRAD 1000RX is a long range acoustic hailing device. It projects sound in a focused and directional manner to standoff distances said to be up to 3000m. It broadcasts clear, authoritative voice commands and a whole range of eardrum busting warning tones to modify the behavior of potential threats and thus provide additional time to escalate the use of force if necessary.

It is rugged, simple to operate, has low power requirements and has an all-weather capability. It can be remotely controlled over an IP network and can be integrated with cameras and high intensity xenon lights. From the product brochures " As part of a layered communication and EOF ( escalation of force ) strategy, LRAD systems provide military personnel additional time and distance to distinguish between security threats and innocent civilians before employing lethal force ".

Two would be installed at the bridge wing.



The LRAD 1000RX mounted on a warship. Source : LRAD


Front view of the LRAD 1000RX with camera and xenon light. Source : LRAD


Rear view of the LRAD 1000RX with camera and xenon light. Source : LRAD



Water Cannons


The LMVs are also equipped with water cannons as part of their non-lethal arsenal. Two would be installed at the bridge wing next to the LRAD.


Lack Of Anti-Submarine Capability


A quick look at the sensors and weapon systems and you would have noticed that the LMV does not have a sonar system for submarine detection. Neither does it have any torpedo tubes, anti-submarine rockets or depth charges, the staple for any self-respecting anti-submarine platform. Of course this omission is intentional. The LMVs are not supposed to be ASW assets just as their predecessors, the Fearless-class PVs are currently solely used for coastal defense and maritime security operations only.

Of the original twelve PVs commissioned by the RSN, six are of the ASW variant with bow mounted sonar and torpedo launchers. They are known as the Anti-submarine Patrol Vessels or APVs. One of the APV, RSS Courageous, was badly damaged in a collision with a container ship in 2003 and was stricken from the navy list.

The remaining five APVs subsequently had their ASW equipment removed and for the past few years had been performing normal patrol duties with the other six non-ASW sister ships. This could be due to the fact that since 2005 the RSN had acquired a better ASW platform in the form of the Formidable-class frigates, and together with the Victory-class corvettes which are also capable ASW ships ( variable depth sonars ), they made the APVs redundant.  ( Note : the Victory-class seems to have also lost their ASW capabilities, after the Scan Eagle UAV upgrade )

At the same time, the threat of terrorism post 9/11 and the surge in piracy activities around the Straits of Melaka and surrounding Indonesian waters meant that there was and still is an increased need to step up maritime security operations in and around Singapore. That burden fell on the shoulders of the eleven APVs and PVs and the men and women of the 182 SQN and 189 SQN. These brave warriors reportedly spend up to a third of their time on sea duties away from the comforts of their home and loved ones. With the arrival of the new LMVs which are bigger and more sea worthy, at least the sailors can have more room and more comfort while on their routines.



Keeping Singapore Safe. The iconic Marina Bay Sands Hotel
and Casino stand in the back ground. Source : Republic of Singapore Navy.
    
      

Missions and Modules



The LMVs are well equipped for routine territorial waters patrol duties but their size and endurance and the helicopter landing deck means that they can also be adapted to take on more demanding missions further afield with the appropriate mission module. For example, adding a containerized medical module for Humanitarian and Disaster Relief ( HADR ) missions is a no brainer. Other mission modules may include mine countermeasures module ( MCM ), intelligence, surveillance and reconnaissance module ( ISR ), oceanography and undersea surveillance module, and perhaps a special operations module. Needless to say, LMVs can also be called upon to perform the usual escort duties and provide naval gunfire support.


Littoral Mission Vessel vs Littoral Combat Ship



Though build along similar concepts of multi-mission adaptability for coastal operations, they are not to be confused with the US Navy's Littoral Combat Ship ( LCS ) which comes in two distinctive versions, the monohull Freedom-class ( LCS-1 ) and the trimaran Independence-class ( LCS-2 ). It is with LCS-2 that the most confusion may arise for the uninitiated as they are both known as " Independence-class " littoral something.




USS Freedom ( LCS-1 ) Littoral Combat Ship in transit off
Southern California in a USN Photo taken on 28th Apr 2015.



Potential name confusion : The Independence-class Littoral Combat Ship
USS Independence ( LCS-2 ) at RIMPAC 2014. USN Photo.


Bigger, Meaner and Leaner



Now you have a better idea of what the LMV is and what it is capable of :

Bigger : At 1250 tonnes and 80m, the LMV is a lot bigger than the PV which is only 55m in length and about 500 tonnes. Bigger means better sea keeping, better endurance, space for more weapon systems, space for bigger and more capable systems, more space for working and living, space for future upgrades ... and also more areas to clean before First Lieutenant rounds.

Meaner : The LMV has the same 76mm main gun as the PV, but everything else is superior. VL MICA instead of Mistral for air and missile defense, additional 25mm chain gun, remotely controlled instead of manually manned 12.7mm HMG, options for non-lethal response, better radar, better electro-optics sensors, capability to carry a medium-lift helicopter, UAV, USV and UUV, infusion of stealth technology ... the list goes on.

Leaner : The entire ship manned by just 23 men. The smaller PV needed 30 and a typical sea patrol involves 30 to 35 personnel. And under the multi-crew concept each PV has 2 sets of deployable crew. A WWII era destroyer escort of a similar tonnage would have required something like 15 officers and 200 enlisted men to operate. Until DSTA, DARPA or somebody finds a way to build a 1250 tonne USV or a squad of robotic sailors, 23 men is about as few as you get away with. Don't anyone forget the domestic before the First Lieutenant rounds. Some things just cannot be automated!


Food For Thought


The RSN's Patrol Vessels are currently less than 20 years old and could have been upgraded to extend their service life for another 10 years or more. The Singapore Armed Forces is known for its frugality and would not have replaced an old equipment until it has exhausted all upgrade options or when it has become economically unviable to continue using or maintaining that weapon system. The fact that these PVs are being replaced a little earlier than usual means there has to be other reasons behind that decision. Most probably it reflects the dire manpower situation within the Navy.

Declining birth rates have reduced the annual intake of conscripted personnel. At the same time career naval personnel are leaving the Navy for the private sector. Even for those who remain with the service, how many would voluntarily want to be in the PV squadron with their punishing patrolling routines? I would rather be with the frigates if I had the choice. There are simply too many PVs that require too many men ( and women ) to staff.

So RSN's solution is to use technology to overcome this shortage in manpower. Get rid of the PVs, replace them with fewer but bigger ships that each require less manpower resources to operate. Make the ships more appealing to work in and more comfortable to live in and hopefully that will make staff retention easier.

Fortunately, with regards to the shortage in manpower, new technology is not the only trick up the RSN's sleeves. After 48 years of existence, the Republic of Singapore Navy has a vast pool of reserve personnel to depend upon in times of crisis. They maintain their proficiency through annual recalls ( known as in-camp training ) that frequently involves a period of sea deployment on their respective vessels. Already the RSN has staffed an entire ship with reserve personnel. The missile corvette RSS Vigilance is a such an example.

This article is a tribute to the men and women of the Patrol Vessel Squadron of the Republic of Singapore Navy. They are the unsung heroes that have kept the waters of Singapore safe all these years.

Saturday 5 July 2014

JMMS - Singapore's ( and South East Asia's* ) first Aircraft Carrier?


The Joint Multi-Mission Ship ( JMMS )


 
 
 
ST Marine Endurance-160 JMMS. Source : ST Marine

 


In his pre-SAF Day media interview 3 days ago, Singapore's Minister for Defence Dr Ng Eng Hen mentioned about the possibility of the RSN ( Republic of Singapore Navy ) acquiring a new class of large helicopter carrying support ship that could provide better aid during major humanitarian assistance and disaster relief operations (HADR).

"While the Landing Ships Tank have served us (well), we are seriously considering a larger Joint Multi-Mission Ship (JMMS) that would have greater capacity and greater range to respond."
"When we responded to Typhoon Haiyan...the typhoon was so devastating that communications were knocked out."
"There was no centralised ability for command and control of the airspace. In that context, a ship like the JMMS would have been very useful."



The March 2011 earthquake and tsunami in the Tohoku region of Japan
destroyed entire towns as this scene in Ofunato, Iwate Prefecture
( 大船渡市, 岩手県 ) shows.
 Pretty nothing much is left standing after the double whammy
of earthquake and tidal wave. US Navy Photo.



So what exactly is a JMMS? To understand this ship, one has to go back to its precursor - the Endurance Class Landing Ship Tank.



The Endurance Class LST




RSS Persistence ( L-209 ) of the Republic of Singapore Navy. Photo : Wikipaedia


RSS Resolution ( LPDM 208 ) and USS Denver ( LPD 9 ) during
Ex Cobra Gold 2011. USN Photo


 
 
The ST Marine Endurance class Landing Ship Tank (LST) as the SAF calls it is actually not an LST! It should more accurately be described as an LPD - Landing Platform Dock in naval parlance. An LST is an amphibious transport ship that can beach itself and discharge its cargo of men and vehicles directly onto the beach head via a bow ramp. In contrast, an LPD has an internal well deck that can be flooded so that troops and vehicles can be transferred to the shore by landing crafts carried internally. It does not and cannot beach itself like an LST. Interestingly, ST Marine correctly labeled the Endurance Class as LPDs on their website. The following pictures shows how the well deck looks like and how crafts, vehicles and materials can be loaded and unloaded.



This is how a typical well deck looks like when dry. Japan Self Defense Force
vehicles line the well deck of the amphibious landing ship dock USS Tortuga ( LSD-46 )
16th Mar 2011 during relief operations in Northern Honshu. USN Photo

 

This is how it looks like from inside the well deck. A landing Craft Utility ( LCU )
enters the flooded well deck of the Wasp-class amphibious assault ship
USS Essex ( LHD-2 ). USN Photo

 
 
This is how the flooded well deck looks like from outside the ship.
The amphibious dock landing ship USS Gunston Hall ( LSD-44 ) transits
during wet well operations as part of landing craft utility ( LCU ) training and maintenance,
11th Apr 2014, Gulf of Oman. USN Photo.
 
 

Hovercrafts do not require a flooded well deck for entering an amphibious ship.
Landing craft Air Cushion ( LCAC ) 71 prepares to enter the well deck of the
San Antonio-class amphibious transport dock ship USS Mesa Verde ( LPD-19 )
23rd Mar 2014 in the Arabian Sea. USN Photo.
 

 

Here's another way of loading at sea without flooding.
Towed artillery being transferred from a landing craft utility ( LCU )
 into the lower vehicle area of the Austin-class amphibious transport dock ship
USS Denver ( LPD 9 ) in Okinawa, Japan 3rd Feb 2014. USN Photo.

 

The RSN used to operate 5 World War Two era ( think D-Day Normandy or Iwo Jima landings ) ex-US Navy County class LST since the 1970s. For more than 20 years they served as transports and training platforms especially for midshipmen ( naval officer cadets ). However, they had become harder and uneconomical to maintain with the passage of time and were eventually replaced by the indigenously designed and built Endurance class LPDs.



USS Holmes County ( LST 836 ), commissioned in 1944 and served
 in the Pacific Theatre during WWII, Korean War, Vietnam War and
was loaned to Singapore in 1971 and finally sold to Singapore outright in 1975.
 She was renamed RSS Endurance ( L-201 ),
 the first ship to bear that name in the RSN. Photo : Navsource.org

 

The Endurance Class - Specs and Capabilities




The Endurance class ships have a displacement of about 7600 tons, a length of 141m, a breath of 21m and a draft of 5m. They are capable of making 17 knots and have a maximum range of 5500 nautical miles. The aft helicopter deck can operate 2 medium-lift helicopters like the AS-332M Super-Puma simultaneously or 1 heavy-lift helicopter like the Boeing CH-47D Chinook. The internal well dock can hold 4 LCM / LCVP type landing crafts. The compliment is officially stated as 120 crew and 15 aircrew and each ship can carry in excess of 300 troops. They are armed with a 76mm OTO MELARA super rapid main gun, two 25mm M242 Bushmaster autocannons and 4 CIS 12.7mm heavy machine guns. Air defense is provided by Mistral missiles fired from two Simbad twin launchers.


RSS Resolution underway. Note the 76mm Oto Melara main gun. RSN Photo
 
 
RSS Endeavour during the Royal Australian Navy's International Fleet Review 2013
in Sydney. Note the bow doors. Wikicommons


RSS Endeavour entering Sydney Harbour during the
Royal Australian Navy's International Fleet Review 2013. Wikicommons
 

 

ST Marine has so far build 5 ships of this class, the first four, RSS Endurance, RSS Resolution, RSS Persistence and RSS Endeavour were commissioned between the years 2000 and 2001 for the RSN. The last ship HTMS Angthong was commissioned in 2012 for the Royal Thai Navy for a sum of SGD 200 million.


Royal Thai Navy's LPD 791 HTMS Angthong during
Cobra Gold 2016. Wikicommons




These LPD have since been actively involved with anti-piracy patrols in the Gulf of Aden and HADR missions in Aceh ( 2004 Boxing Day Tsunami ) and the Philippines ( Typhoon Haiyan ). They have proven themselves to be potent and capable platforms. Value-wise they also compare favourably with similar classed vessels from foreign navies like the LPD-17 San Antonio class which cost ten times as much to build ( to be fair these are 25000 ton vessels , 3 times bigger ) and yet still suffer from poor workmanship and many teething problems!




Anti-piracy duty : The aircraft carrier USS George H.W. Bush ( CVN 77 )
is underway with Singapore Navy tank landing ship
RSS Endeavour ( L210 ) in the Gulf of Aden 15th Nov 2011. USN Photo



The Endurance Family


ST Marine's website touts 3 different configurations for the Endurance type support ship. The Endurance-120, the Endurance-140 and finally the Endurance-160 based on the length of the ship. So the RSS Endurance which measures 141m belongs to the Endurance-140 sub-type and as far as anyone is aware this is the only type that has been built by ST Marine. The 120 and 160 are simply options for export or future consideration.


The Endurance-class LPD brochure from ST Marine



The Endurance 120, 140 and 160. Image : ST Marine
 


Apart from the length, the main difference between the Endurance-120 and the Endurance-140 is the load capacity. So the 120 is a miniature version of the 140 that carries only one medium-lift helicopter and less landing crafts and less troops.

The Endurance-160 however, is a different kettle of fish. It is only 20m longer but is twice as big as the Endurance-140 in terms of tonnage - in the 14500 ton range. It has a through flight deck that can accommodate five helicopters and an island superstructure that immediately screams "Helicopter Carrier". The top speed is increased to 22 knots and its range listed as 7000 nautical miles. It has a well deck and carries landing crafts just like her smaller siblings. Since 2010, ST Marine has been showcasing scaled models of this ship at major defense exhibitions like the Singapore Airshow but there has been no foreign or domestic sales so far. The equivalent USN designation would be Landing Helicopter Dock ( LHD) and a good example would be USS Wasp ( LHD-1 ) class amphibious assault carriers, though these are 40000 ton monsters.



USS Bonhomme Richard ( LHD 6 ), a Wasp-class amphibious assault ship transits
the East China Sea 22nd Apr 2014. Sailors and Marines onboard conducted
SAR operations at the Korean ferry disaster site near Jindo Island. USN Photo

 
 
 

The Multi-Role Assault Carrier

 
 
So what value can an amphibious assault carrier add to a small navy like the RSN? After all you cannot possibly be assaulting your neighbour's beach all the time, can you? Though I must say the temptation would certainly be there especially if your neighbour is intent on reclaiming land and creating new beach heads near your maritime boundary all the time. 
 
First, let's get the records straight. An amphibious assault ship is an offensive weapon system and is not used for defense. Its main role is that of force projection over the seas and across the surf zones to land an amphibious force onto a beach head as efficiently as possible. Depending on the aviation assets embarked ( AH-64D Apache gunship ), it may even provide fire support for the landing force.

It can be a platform for airborne mine countermeasures missions, again if there are helicopters like the MH-53E Sea Dragon embarked.
 
Last but not least, it can also potentially be a potent anti-submarine platform as long as the appropriate mix of ASW helicopters are carried.
 
At the same time, the very characteristics that enable an amphibious assault ship to provide good support to an amphibious landing on a hostile beach also makes it an ideal platform for a HADR mission. The large capacity for cargo means more relief supplies can be carried. Heavy vehicles and mechanized equipment can be embarked and disembarked with relative ease. A large warship also tends to have more advanced communications suite and can be used as a command and communications centre for the relief mission. Its medical and surgical facilities can provide treatment to those in need. Most importantly its fleet of medium and heavy-lift helicopters can provide sustained airlift capabilities when roads and airfields are completely destroyed in major disasters.
 
However, HADR missions, although they are becoming increasing common for the Singapore Armed Forces, can never be the main justification for acquiring a new capability as major as an assault carrier. You will be silly to spend several hundred million dollars on a ship just to play the Good Samaritan and be in the good books of your neighbours! So the real motive or rationale for having a helicopter carrier is still not immediately obvious to the public but perhaps one could speculate? Could this be a respond to the increasingly aggressive and belligerent behavior of China in the South China Sea?

 
 

The South China Cauldron


 
The South China Sea is a hugely volatile area with many Pacific Rim nations having claims on its numerous shoals and island groups. The Spratly Islands for example, is simultaneously claimed by China, Taiwan, Malaysia, Vietnam, Philippines and Brunei. Until not so long ago, regional powers have largely played by the rules and avoided serious armed confrontations. The rise of China as an economic and military power in recent years have changed the status quo. Having utterly modernized its airforce and navy and with the commissioning of a brand new aircraft carrier the Liaoning, China has upped the ante by unilaterally declaring an air defense identification zone ( ADIZ ) over the East China Sea and have been seen engaging in thuggish behavior like fire control radar locking on a Japanese ship, ramming a Vietnamese patrol boat, spraying water cannons on fishing vessels, blockading Pilipino resupply ships from relieving an island outpost, buzzing Japanese aircrafts and intrusions into Japanese airspace to test their scrambling response etc. Although Singapore does not have any territorial disputes with any country in the South China Sea ( not counting Pedra Branca as the dispute has been settled in the ICJ in Singapore's favour ), any escalation of tension in the region will still disrupt trade and communications, thus potentially threatening its independence and survival.  
 

How To Tame A Dragon


 
So what could be done about China who is blatantly disregarding international norms and law? What if China claims the entire South China Sea as its own and restrict passage? Even the combined forces of all ten ASEAN nations is probably no match for China. And please do not put too much hope with the new Japanese not so pacifist Constitution as it does not really change anything. The US is not too keen to get involved in anybody's business nowadays and would be more than happy to lead from behind. Obama took more than a year before reaffirming that the US would come to Japanese aid should her territories be violated. Further afield nothing was done when Crimea was taken from Ukraine except sanctions and more useless sanctions. All this means that you can't really depend on others to protect you when shit hits the ceiling ( and why should they? ). At the end of the day, it still pays to be self-sufficient, whether in defense, resources or other things.

 

Endurance-200?

 


How about a light aircraft carrier capable of carrying half a squadron of F-35B Lightning II stealth fighters? That surely would be a game changer. Dr Ng was referring to an Endurance-160 type helicopter carrier in his pre-SAF Day speech and he did mention that SAF is still in the preliminary feasibility stages and the design has not been finalized. Now it would not need too much imagination to think that what if an Endurance-180 or better still an Endurance-200 type hull be acquired and you can have instead a light aircraft carrier like the Giuseppe Garibaldi shown below?
 
 
Italian light aircraft carrier Giuseppe Garibaldi with AV-8 Harrier
STOVL jets and helicopters on the flight deck. Wikipaedia
 
 
The short take-off and vertical landing (STOVL) version of the Joint Strike Fighter (JSF) designated the F-35B needs 168m of real estate for take-off. Less if a ramp is available. So a 25000 ton Endurance-200 could well be constructed to be able to embark more than just five helicopters and a ramp could be included in the design for fixed-wing operations. A large hangar bay would have to be included in the design, together with bigger aircraft elevators and most importantly, a jet blast proofed flight deck. Nobody would want a repeat of what the brand new USS America is going through - 40 weeks of additional yard time for modifications to the flight deck because it could not withstand the heat from the F-35B, an aircraft it was originally designed to operate! Of course the F-35B is currently not quite yet ready for mass production but it would hopefully be ready when the Endurance-200 is commissioned.  



A F-35B Lightning II lands aboard the amphibious assault ship
USS Wasp ( LHD 1 ) during the second at-sea F-35
developmental test event, Atlantic Ocean, 14th Aug 2013. USN Photo.

 

F-35B Joint Strike Fighter aircraft BF-3 with inert AIM-9X sidewinder missiles
over the Atlantic test range Sep 2012. The F-35B variant is designed
for the US Marine Corps as well international partners including the UK and Italy
and is capable of short take-offs and vertical landings to enable
air power projection from amphibious ships, ski-jump aircraft carriers
and expeditionary airfields. USN Photo


F-35B of Air Test and Evaluation Squadron VX-23 during the
first ever ski jump launch of the JSF at NAS Patuxent River
19th Jun 2015. Wikicommons


The U.S. Navy amphibious assault ship USS America (LHA-6)
conducts flight operations off the coast of Southern California (USA)
during the ship's recertification of the flight deck after
completing a 10-month Post Shakedown Availability (PSA). USN Photo.


 
HMS Invincible ( R-05 ) of the Royal Navy, now decommissioned,
with her Ski-jump ramp for STOVL fixed wing operations in 2005
during the 200th Anniversary of the Battle of Trafalgar celebrations. Wikipaedia
 


 
MV-22 Ospreys : Having a couple of these folding wing tilt-rotors
will be really NICE. The amphibious assault ship USS Boxer ( LHD 4 )
is underway during Ex Dawn Blitz 2013. USN Photo.

 
With her air bases easily within artillery range from her closest neighbors ( both Malaysia and Indonesia possess the Astros II multiple launch rocket system ), an added benefit of having a carrier for Singapore would be that of mitigating the effectiveness of a pre-emptive strike from taking out the entire air force.

 

CVBG - Carrier Battle Group

 
We are all aware that aircraft carriers are high value targets and they never operate alone. Therefore with the Endurance-200, more frigates, corvettes and submarines will be required to form its protection group. Oilers and supply ships will be needed too. Most of these assets the RSN already owns or is in the process of acquiring, like the Type 218SG hunter killer submarine with air-independent propulsion, scheduled for delivery in the year 2020.
 
When that happens, Singapore will be the first in the region to have an operational aircraft carrier battle group and the RSN will be transformed into a true Blue Water Navy, offering credible deterrence to any nation intent upon disrupting her sea lines of communications (SLOC). I suspect it would be named RSS Singapura or perhaps RSS Temasek, because, why would anyone want to name a capital vessel after some nondescript province or some peasant ward??!

* Not counting the Thai-tanic HTMS Chakri Naruebet which, in 1999, barely 2 years after commissioning, had only one serviceable Matador ( Harrier VTOL ) to play with, and none after 2006.