Canberra-class landing helicopter dock

src: www.navy.gov.au

The Canberra class is a ship class of two Landing Helicopter Dock (LHD) ships built for the Royal Australian Navy (RAN). Planning to upgrade the navy's amphibious fleet began in 2000, based on Australian experiences leading the International Force for East Timor peacekeeping operation. With a new climate for growing Australian Navy spending, a desire existed for forward defence capability for landing and supporting troops on Asian territory, that had never existed in Australian history, even with the old Majestic-class light fleet carriers, HMAS Melbourne and HMAS Sydney in the 1970s. In 2004, French company Direction des Constructions Navales (DCN) and Spanish company Navantia were invited to tender proposals, with DCN offering the Mistral-class amphibious assault ship and Navantia proposing the "Buque de Proyección Estratégica" design (later commissioned as Juan Carlos I). The Spanish design was selected in 2007, with Navantia responsible for construction of the ships from the keel to the flight deck, and BAE Systems Australia handling the fabrication of the superstructure and fitting out.

Construction of the first ship, HMAS Canberra, commenced in late 2008, with the hull launched in early 2011, and sea trials in early 2014. Canberra was commissioned in November 2014. Work on the second vessel, HMAS Adelaide, started in early 2010. Adelaide was commissioned in December 2015. They are the largest vessels ever operated by the RAN, with a displacement of 27,500 tonnes (27,100 long tons; 30,300 short tons).

The ships are home-ported at Fleet Base East in Sydney (which has prompted complaints from nearby residents about machinery noise, exhaust fumes, and blocked views) and will regularly operate out of Townsville, the location of Lavarack Barracks, home of the Australian Army's 3rd Brigade. In addition to being located in North Queensland close to Asia and the Pacific Islands, one of the 3rd Brigade's Battalion's, the 2nd Battalion, Royal Australian Regiment, was selected to become the Army's specialist amphibious infantry battalion.

Video Canberra-class landing helicopter dock

Planning and selection

Planning to replace the Kanimbla-class landing platform amphibious ships Kanimbla and Manoora, and the heavy landing ship Tobruk began as early as 2000, with the intention announced in the Defence 2000: Our Future Defence Force white paper. The importance of amphibious warfare had been demonstrated during Australia's leadership of the International Force for East Timor peacekeeping operation: the difficulty in supporting an expeditionary force to one of Australia's nearest neighbours demonstrated the need for an improved amphibious sealift capability. In November 2003, the Minister for Defence, Robert Hill, released a Defence Capability Review, which stated that two ships of at least 20,000 tonnes (20,000 long tons; 22,000 short tons) displacement and capable of launching five to six helicopters simultaneously were being sought. The acquisition was included under the procurement designation Project JP2048: although Phase 1 of JP2048 looked at a new type of landing craft for the Kanimbla class (the LCM2000), Phases 2 and 4 were to identify, then acquire the new amphibious warfare ships, and Phase 3 covered the design and construction of compatible landing craft (12 LCM-1E, ordered on 27 September 2011). The ships were originally to replace one of the Kanimbla-class ships and Tobruk, with the other Kanimbla-class ship later replaced by a strategic sealift ship.

In January 2006, the Australian government announced the names for the planned ships: Canberra and Adelaide. After the announcement, suggestions for alternate names were expressed in several venues. The Navy League of Australia proposed that Adelaide should instead be named Australia; using the name of the nation and its capital for the RAN's two most powerful ships, as had been the case with the navy's two World War II-era County-class cruisers, while freeing the name up for the League's proposed fourth Hobart-class destroyer. Alternately, a member of the Australian Naval Institute opined that the ships should be named Gallipoli and Guadalcanal; the first reflecting the landings at Gallipoli, one of the first amphibious operations of the modern era, the second recognising the amphibious campaign to recapture Guadalcanal and the efforts of the United States Navy and United States Marine Corps in aiding Australia during World War II.

A Request For Information and invitation for tenders was sent to two European shipbuilders in February 2004; French company Direction des Constructions Navales (DCN) and Spanish company Navantia. Shipbuilders from the United States were not included, as American amphibious warfare ships were too large for Australian requirements, and were either too personnel-intensive or could not operate the number of helicopters required. DCN responded with an enlarged version of the Mistral-class amphibious assault ship; 2,000 tonnes (2,000 long tons; 2,200 short tons) greater displacement than the 22,000-tonne (22,000-long-ton; 24,000-short-ton) vessels active with the French Navy. A design being built by Navantia for the Spanish Navy, the "Buque de Proyección Estratégica" (Strategic Projection Ship, later commissioned as Juan Carlos I) was offered by the Spanish, partnering with Australian company Tenix Defence. Although 4,000 tonnes (3,900 long tons; 4,400 short tons) larger and with an increased troop, vehicle, and helicopter carrying capability compared to the Mistrals, the Spanish ship was still under construction at the time of the offer, and was not due to enter service until late 2008. On 20 June 2007, Minister for Defence Brendan Nelson announced that the A$3 billion contract to build the Canberra class had been awarded to Navantia and Tenix. Although an unproven design, the Spanish offer was closer to the RAN's requested requirements, and there were benefits from ordering the Canberras and the new Hobart-class air warfare destroyers from the same company.

At around the time the decision to purchase the ships was made, many defence analysts advocated for acquiring a larger number of smaller vessels on the grounds that this would be better suited to conditions in Australia's region. However, the Navy's Sea Power Centre argued that large amphibious vessels would provide greater flexibility.

Hugh White, a former leading defence planner for the Hawke and Howard Governments, ANU Professor and defence writer for the SMH, has long been a critic of the decision to acquire the Canberra-class ships. In 2004 he argued that the Australian Defence Force did not need the capacity to conduct a major opposed amphibious operation, as it was unlikely to ever be called upon to do so, and the money needed to purchase the vessels would be better spent on smaller amphibious ships and other defence capabilities. In 2016 White judged the ships to be a 'terrible and heroic, waste of money and nothing more than, 'big, fat... targets in the South China Sea'. which are too vulnerable for deployment in a serious crisis.

Maps Canberra-class landing helicopter dock

Design and capabilities

The Canberra-class vessels are 230.82 metres (757.3 ft) long overall, with a maximum beam of 32 metres (105 ft), and a maximum draught of 7.08 metres (23.2 ft). Keeping the maximum draught low was an important factor during design, allowing the ships to operate in littoral waters and small harbours. At full load, each ship will displace 27,500 tonnes (30,300 short tons; 27,100 long tons), making them the largest vessels to serve in the RAN. The Canberras have the same physical dimensions as Juan Carlos I, but differ in the design of the island superstructure and the internal layout, in order to meet Australian conditions and requirements. Unlike the Spanish vessel, the Australian ships are built to meet Lloyd's Naval Rules.

Propulsion is provided by two Siemens Navantia 11-megawatt (15,000 hp) azimuth thrusters, each with an onboard electric motor, driving two 4.5-metre (15 ft) diameter propellers. The electricity is provided by a Combined diesel and gas system, with a single General Electric LM2500 turbine producing 19,160 kilowatts (25,690 hp), supported by two Navantia MAN 16V32/40 diesel generators providing 7,448 kilowatts (9,988 hp). The main thrusters are supplemented by two 1,500 kilowatts (2,000 hp) bow thrusters, and a 1,350-kilowatt (1,810 hp) Progener-Mitsubishi S16MPTA diesel generator is fitted as an emergency backup. The vessels have a maximum speed of over 20 knots (37 km/h; 23 mph), a maximum sustainable full-load speed of 19 knots (35 km/h; 22 mph), and an economical cruising speed of 15 knots (28 km/h; 17 mph), with a corresponding range of 9,000 nautical miles (17,000 km; 10,000 mi). The LHDs can maintain full directional control while reversing at up to 8 knots (15 km/h; 9.2 mph).

Each ship is fitted with a Saab 9LV Mark 4 combat management system. The sensor suite includes a Sea Giraffe 3D surveillance radar, and a Vampir NG infrared search and track system. For self-defence, the LHDs are fitted with four Rafael Typhoon 25 mm remote weapons systems (one in each corner of the flight deck), six 12.7 mm machine guns, an AN/SLQ-25 Nixie towed torpedo decoy, and a Nulka missile decoy. Planned upgrades include the installation of up to three Phalanx CIWS from 2018. Defence against aircraft and larger targets is to be provided by escort vessels and air support from the Royal Australian Air Force (RAAF). The ships' companies consist of 358 personnel; 293 RAN, 62 Australian Army, and 3 RAAF.

The LHDs will be able to transport 1,046 soldiers and their equipment, and can carry 1,600 in overload conditions. The embarked force is called the Amphibious Ready Element Landing Force (ARE-LE) based on an infantry company of up to 220 soldiers. Army planners considered several options for forming an amphibious force including training a dedicated infantry battalion, training several battalions with battalion rotations or creating a brigade size force similar to the U.S. Marines MEU and Royal Marines 3 Commando Brigade structure. In December 2011, 2nd Battalion, Royal Australian Regiment (2RAR) was selected to develop the initial amphibious capability with the Chief of Army stating that as the capability is developed a future model for the force will be decided. A special forces capability will be provided by the 2nd Commando Regiment with the potential in the future for elements of 2RAR to be trained in certain special forces skills. Two vehicle decks (one for light vehicles, the other for heavy vehicles and tanks) have areas of 1,880 square metres (20,200 sq ft) and 1,410 square metres (15,200 sq ft) respectively, and between them can accommodate up to 110 vehicles. The heavy vehicle deck may alternately be used for cargo, with a capacity of 196 shipping containers. Each ship has a 69.3-by-16.8-metre (227 by 55 ft) well deck, that houses up to four LHD Landing Craft (LLC, the RAN designation for the LCM-1E), which can be launched and recovered in conditions up to Sea State 4. Twelve were ordered from Navantia, which delivered them in batches of four during 2014 and 2015. Six LLC are assigned to each LHD, with the additional craft used for training and trials at shore bases, and rotated to their parent ship when embarked craft require maintenance. The well deck also has room for four Rigid-hulled inflatable boats (although these will not be carried as standard), and can be used by other nations' landing craft and amphibious vehicles.

The flight deck is 202.3 by 32 metres (664 by 105 ft) and sits at a height of 27.5 metres (90 ft), with six spots for helicopters up to MRH-90 size to operate simultaneously. Alternately, helicopters up to Chinook size can take off or land simultaneously on four spots on the flight deck. Flight operations can be conducted up to Sea State 5. The standard air group aboard these ships will be a mix of MRH-90 transport helicopters and S-70B Seahawk anti-submarine helicopters. The 990 square metres (10,700 sq ft) hangar deck can accommodate eight medium-size helicopters, and an additional ten can be carried if the light vehicle deck is used for additional helicopter space. Two aircraft lifts (one large one centre-aft, and a smaller one to starboard and in front of the island superstructure) connect the flight and hangar decks.

The ski-jump ramp of Juan Carlos I has been retained for the RAN ships, although is not intended for use. The Spanish use the ramp to launch Harrier jet aircraft, and although operating STOVL aircraft was decided against early in the Australian procurement process due to cost and detraction from the ship's main role, redesigning the ship to remove the ramp would have added unnecessary cost to the project. The retention of the ski-jump has prompted multiple recommendations that fixed-wing aircraft be operated from the ships (primarily envisaged as a flight group of F-35B Lightning II STOVL aircraft). The RAN has maintained that embarking Australian-operated, fixed-wing aircraft was not under consideration, although has conceded that cross-decking with other nations' aircraft could possibly occur. In May 2014, Minister for Defence David Johnston stated in media interviews that the government was considering acquiring F-35B fighters for the Canberra's, and Prime Minister Tony Abbott instructed 2015 Defence White Paper planners to consider the option of embarking F-35B squadrons aboard the two ships. This assessment found that the cost of modifying the ships to operate jets would be very high, and the idea was rejected before the completion of the White Paper.

Opponents to operating F-35s from the Canberra-class state that embarking enough aircraft to be an effective force would require abandoning their capability as amphibious warfare vessels, operating as an aircraft carrier would make the ships higher profile targets and need greater escorting forces, existing fuel and ordnance storage would not be able to sustain fixed-wing operations, structural modifications were needed to reinforce and heat-treat the flight deck to withstand F-35B vertical thrust, and the F-35B project itself has been the most expensive and most problematic of the three Joint Strike Fighter variants. Supporters counter that providing fixed-wing air support close to amphibious operations maximises aircraft capability, other nations are already working on solutions to structural and thrust problems for other Harrier-era ships, and the presence of a ski-jump makes the vessels already more suitable for STOVL operations than equivalent amphibious ships with flat flight decks.

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Construction

Navantia was contracted to construct the hulls from 104 'blocks' or 'modules', which were fabricated individually at Navantia's facilities in Ferrol and Fene, then combined on the slipway at the Ferrol shipyard. The Canberras were built up to the flight deck, launched, then transported by heavy lift ship to Williamstown, Victoria, where the installation of the island superstructure and the internal fitout of the hull will be completed by BAE Systems Australia (which acquired Tenix in mid-2008).

Construction of Canberra began in September 2008, when the first steel was cut. The first three blocks were laid down on 23 September 2010. She was launched on 17 February 2011. The hull was loaded onto the heavy lift ship MV Blue Marlin on 4 August 2012, with Blue Marlin departing Ferrol for Williamstown on 17 August, and arriving in Port Phillip on 17 October. Canberra commenced sea trials on 3 March 2014. Contractor-run sea trials concluded in early September, and Canberra was commissioned into the RAN on 28 November 2014.

Work on Adelaide began during February 2010, when the first steel was cut. The first hull blocks were laid down on 18 February 2011, and Adelaide was launched on 4 July 2012. Initially, the ship was due to reach Australia in early 2013 to begin final fitout, but this did not occur. The hull was loaded onto Blue Marlin on 10 December 2013 in Vigo Bay. Blue Marlin and Adelaide arrived at Williamstown on 7 February 2014. Entry into RAN service was originally planned for mid-2015, but as of July 2011, this had been pushed back to sometime in 2016. Fitting out of the ship progressed at a faster rate than expected, which has brought the predicted commissioning date back to late 2015. After sea trials ended in October, Adelaide was commissioned on 4 December 2015. Although Canberra was identified as "LHD01" and Adelaide as "LHD02" during construction, the ships will be commissioned with the pennant numbers "LHD 02" and "LHD 01" respectively. The reversal of the numbers causes the new ships' pennants to correspond to the Adelaide-class frigates with the same names.

The early decommissioning of the two Kanimbla-class vessels in 2011, several years before Canberra-class ships would enter service, led to the acquisition of the landing ship dock HMAS Choules and the support vessel ADV Ocean Shield. The latter was only intended as a stop-gap acquisition, and in mid-2014, Ocean Shield was transferred to the Australian Customs and Border Protection Service.

src: media.defenceindustrydaily.com

Ships

src: static.turbosquid.com

Basing arrangements

The two LHDs are officially home-ported at Fleet Base East in Sydney. On 4 December 2015, the support centre for the class at Garden Island was named after Captain John Robertson. Robertson was commanding officer of the carrier Melbourne at the time of the Melbourne-Voyager collision in 1964, and was widely seen to be a scapegoat after the first Royal Commission found him to be at fault.

Basing the two ships at Fleet Base East has prompted complaints from nearby residents in Potts Point and Wooloomooloo. Issues raised include exhaust fumes and noise pollution from the ships' generators and machinery running around-the-clock, and that the large ships block views of Sydney Harbour. To alleviate concerns, Defence is investigating options to relocate one or both ships to the northern portion of Garden Island, and has installed shore-powered air-conditioning units (allowing the ships' onboard generators to be shut down at night).

The ships are intended to regularly operate out of Townsville, the base of 2RAR. To this end, the Department of Defence contributed A$30 million to the A$85 million upgrade of the multi-purpose Berth 10 at the Port of Townsville, which was completed in October 2013. Naval vessels have been allocated 45 days of berthing per year. Defence also spent A$5.3 million to lease and develop a dedicated staging area for equipment and personnel within the Port of Townsville precinct.

src: navantia.com.au

Citations

src: www.naval-technology.com

References

Books

• Saunders, Stephen; Philpott, Tom, eds. (7 August 2015). IHS Jane's Fighting Ships 2015-2016. Jane's Fighting Ships (116th Revised ed.). Coulsdon: IHS Jane's. ISBN 9780710631435. OCLC 919022075. 

Journal articles and papers

• "Amphibious Ships" (PDF). Semaphore. Sea Power Centre - Australia. 2007 (14). October 2007. Archived from the original (PDF) on 20 March 2011. Retrieved 22 February 2011. 
• Borgu, Aldo (2004). "Capability of First Resort? Australia's Future Amphibious Requirement". Australian Strategic Policy Institute. Archived from the original on 6 July 2011. Retrieved 23 February 2011. 
• Brabin-Smith, Richard; Schreer, Benjamin (17 November 2014). "Jump jets for the ADF?". Strategic Insights. Australian Strategic Policy Institute (78). Retrieved 28 November 2014. 
• Brown, Nick (28 June 2007). "Spanish designs are Australia's choice for warship programmes". International Defence Review. 
• Collingburn, Major A.R. (5 May 2010). Adaptive Army : Embracing the concept of operational manoeuver from the sea (Master's thesis). U.S. Marines Corps University. Retrieved 28 July 2016. 
• Fish, Tim (25 July 2011). "Australia awaits new LHDs for amphibious uplift". Jane's Defence Weekly. Jane's Information Group. 
• Fish, Tim (15 June 2010). "Amphibious assault ships: Striking distance". Jane's Defence Weekly. 
• Fish, Tim (5 February 2010). "Steel cut for second Australian LHD". Jane's Navy International. 
• Fish, Tim (28 September 2009). "First Australian LHD takes shape". Jane's Navy International. 
• Garai, Paul (October 2010). "Lets give the LHDs some names with meaning". Headmark (138): 33-4. 
• Gillespie, Lt. Gen. Ken (January 2010). Chief of Army (PDF) (Speech). Combined and Joint Operations from the Sea. Sydney: sixth Sea Power Conference. ISBN 9780992500443. Retrieved 6 January 2017. 
• Gillis, Kim (2007). "Interview. Landing Helicopter Dock Project - Canberra Class". DefenceToday. 6 (3): 28-29. ISSN 1447-0446. 
• Hawkins, Lt. Col. Jon (15 June 2009). "Australia's Future Amphibious Warfare Capability" (PDF). Joint Amphibious Capability Implementation Team. Retrieved 5 January 2017. 
• Joint Standing Committee on Foreign Affairs Defence and Trade (2004). Australia's Maritime Strategy (PDF) (Report). 
• Kerr, Julian (26 May 2014). "Australia could buy F-35B". IHS Jane's Defence Weekly. Retrieved 8 June 2014. 
• Kerr, Julian (22 December 2011). "Amphibious ambitions: expanding Australia's naval expectations". Jane's Navy International. Jane's Information Group. 
• Rahmat, Ridzwan (30 April 2015). "Navantia launches Australia's last LHD landing craft". IHS Jane's Navy International. Retrieved 6 May 2015. 
• "Time to bring back the Pride". The Navy. Navy League of Australia. 69 (4): 2. October 2007. 

News articles

• "HMAS Choules commissioned in honour of veteran". ABC News. Australian Broadcasting Corporation. 13 December 2011. Retrieved 13 December 2011. 
• "Huge Navy ship hull arrives in Victoria". ABC News. 17 October 2012. Retrieved 20 October 2012. 
• "HMAS Canberra enters commission into Australian Navy at Sydney ceremony". ABC News. Australian Broadcasting Corporation. 28 November 2014. Retrieved 28 November 2014. 
• "Adelaide LHD hull arrives in Melbourne". Australian Aviation. 7 February 2014. Retrieved 7 February 2014. 
• "Johnston raises possibility of acquiring F-35Bs". Australian Aviation. 19 May 2014. Retrieved 8 June 2014. 
• Butterly, Nick (17 May 2014). "Jump jets on Defence radar". The West Australian. Yahoo7 News. Retrieved 8 June 2014. 
• Carter, David (23 October 2013). "Townsville's Berth 10 opens". Rebuilding the Nation. Faircount Media Group. Retrieved 24 December 2015. 
• Cavas, Christopher P. (18 February 2011). "Australia's Largest Ship Launched". Defense News. Retrieved 22 February 2011. 
• "LHD launch paves the way for amphibious transformation". Department of Defence (Australia). 18 February 2011. Retrieved 22 February 2011. 
• Durrant, Patrick (10 July 2015). "Second LHD completes initial sea trials". Australian Defence Magazine. Retrieved 19 July 2015. 
• Ellery, David (20 March 2012). "Defence buys boat bound for Customs". The Canberra Times. Retrieved 3 June 2012. 
• Hansen, Nick (18 March 2015). "Residents fume as HMAS Canberra blocks their view, keeps them awake and now there's another one on the way". Wentworth Courier. NewsLocal (News Corp Australia). Retrieved 27 December 2015. 
• Hansen, Nick (13 November 2015). "$1.5 billion navy vessel NUSHIP Adelaide docks for indefinite stay in Sydney beside HMAS Canberra". Wentworth Courier. NewsLocal (News Corp Australia). Retrieved 27 December 2015. 
• Kennedy, Emily (4 March 2014). "Canberra's size and power tested at sea trials". Navy Daily. Royal Australian Navy. Retrieved 4 March 2014. 
• Kennedy, Emily (11 September 2014). "Canberra sea trials a success". Navy News. Directorate of Defence News, Department of Defence. p. 5. Retrieved 14 September 2014. 
• Kennedy, Emily (1 August 2014). "Canberra's landing craft coxswains demonstrate new skills". Navy Daily. Royal Australian Navy. Retrieved 25 September 2014. 
• Kerin, John (7 July 2015). "PM's floating fighter jet plan quietly sunk by Defence". Australian Financial Review. Retrieved 7 July 2015. 
• McPhedran, Ian (11 May 2013). "Inside HMAS Canberra". News.com.au. News Corp Australia. Archived from the original on 22 February 2015. Retrieved 19 March 2014. 
• McPhedran, Ian (4 December 2014). "Formal apology long overdue for navy hero Captain John Robertson". The Advertiser. Retrieved 7 December 2015. 
• Otero, A. (11 December 2013). "Perfecto embarque de un coloso del mar". Faro de Vigo (in Spanish). Retrieved 11 December 2013. 
• Raggatt, Tony (24 February 2015). "Townsville port's cruise terminal one of its busiest wharves". Townsville Bulletin. Retrieved 24 December 2015. 
• "On the way to Australia". Navy News. Royal Australian Navy (Directorate of Defence News). 55 (16): 5. 30 August 2012. 
• "Launch of second Amphibious Ship Landing Helicopter Dock". Royal Australian Navy. 5 July 2012. Retrieved 5 October 2012. 
• "Navantia efectúa con éxito el ´encaje´ del ´Canberra´". Laopinióncoruña (in Spanish). 4 August 2012. Retrieved 6 September 2012. 
• "El "Blue Marlin", abandonando el puerto exterior de A Coruña". La voz de Galicia (in Spanish). 17 August 2012. Retrieved 20 August 2012. 
• Seidel, Jamie (19 November 2014). "Australian Strategic Policy Institute raises doubts over Abbott Government plan to rebuild newest warships". News.com.au. Retrieved 28 November 2014. 
• Staples, Natalie (4 December 2015). "HMAS Adelaide enters service". Navy Daily. Royal Australian Navy. Retrieved 7 December 2015. 
• Welfare, John (2 February 2012). "Beersheba's Battle Plan" (PDF). Army: The Soldiers' Newspaper (1274 ed.). Canberra: Department of Defence. p. 18. ISSN 0729-5685. Retrieved 6 January 2017. 

Press releases

• "Next generation of naval ships to reflect a rich history of service" (Press release). Department of Defence (Australia). 20 January 2006. Retrieved 22 February 2011. 
• "Projects of concern - Update" (Press release). Office of Stephen Smith MP, Minister for Defence. 15 October 2010. Retrieved 5 October 2012. 
• "Ocean Shield the Navy's newest humanitarian and disaster relief vessel" (Press release). Offices of the Minister for Defence and Minister for Defence Materiel. 3 June 2012. Archived from the original on 2 November 2015. Retrieved 3 June 2012. 
• "Minister for Defence - Port of Townsville Berth 10 upgrade opening" (Press release). Department of Defence Ministers. 18 October 2013. Retrieved 24 December 2015. 

Websites

• "Australia's Canberra Class LHDs". Defense Industry Daily. Retrieved 13 November 2007. 
• George, Steve (20 June 2014). "LHD and STOVL: an engineer's view". The Strategist - The Australian Strategic Policy Institute Blog. Australian Strategic Policy Institute. Retrieved 28 November 2014. 
• "Amphibious Assault Ship (LHD)". Royal Australian Navy. Retrieved 23 January 2013. 

src: media.defenceindustrydaily.com

External links

• Defence Materiel Organisation Amphibious Deployment and Sustainment - JP 2048 Phase 4A/B

Source of article : Wikipedia