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She is also the 6th boat of the much-delayed Astute class and she will probably now commission next year, likely in the shipyard, well ahead of beginning sea trials, as was the case with HMS Anson. It is important to note that the rollout frees up space needed in the DDH to begin the assembly of HMS Dreadnought, first of the much larger SSBNs that is due to be commissioned in the early 2030s.
6th Astute class submarine HMS Agamemnon rolled out of the build hall | Navy Lookout
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Recognizing the need for enhanced capabilities, the RSN later incorporated the Archer-class submarines into its fleet. Also originating from Sweden, these submarines underwent significant upgrades before entering service with Singapore. Equipped with air-independent propulsion (AIP) systems, the Archer-class submarines offered increased underwater endurance and stealth, allowing them to remain submerged for extended periods without surfacing. This advancement significantly improved the RSN's operational flexibility, enabling it to conduct longer and more covert missions, which is crucial for intelligence gathering and surveillance in the busy maritime corridors of Southeast Asia.
Second Invincible-class submarine Invincible returns to Singapore after German launch
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The Reis-class submarines feature a single-hull, one-compartment design and an air-independent propulsion system on the proven Howaldswerke-Deutsche Werft (HDW) fuel cell. The submarines have a length of 68.35 meters, an outer diameter of 6.3 meters, a displacement of 1,850 tons, and a capacity of 40 personnel. ThyssenKrupp Marine Systems have been building the Reis-class submarines (known initially as Type 214 TN) in Turkey’s Golcuk Naval Shipyard. The AIP system uses fuel cell technology, PEM Fuel Cell (2x120kw), and high-capacity batteries (2×324 units). This provides the submarine with the ability to conduct long-endurance deployments without snorkeling. The boats will deploy heavyweight torpedoes (MK48 Mod 6AT, DM2A4), anti-ship missiles (Sub-Harpoon), and mines. Indigenous heavyweight torpedo Akya and anti-ship missile Atmaca are expected to be fitted to the submarines during the project. The Reis-class submarine will be able to undertake missions such as littoral water operations to ocean-going patrols, including anti-surface and anti-submarine operations, ISR tasks, and special forces operations. This is mainly thanks to their increased diving depths and their modular weapon and sensor mix.
Turkish Navy commissions first Reis-class AIP submarine TCG Piri Reis - Naval News
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Virginia-class fast-attack submarines provide the Navy with the capabilities required to maintain the nation’s undersea supremacy well into the 21st century. Virginia submarines have enhanced stealth, sophisticated surveillance capabilities, and special warfare enhancements that enable them to meet the Navy’s multi-mission requirements. Additionally, through the extensive use of modular construction, open architecture and commercial off-the-shelf components, the Virginia class is designed to remain state-of-the-practice for its entire operational life through the rapid introduction of new systems and payloads.
U.S. Navy Launches 26th Virginia-class Attack Submarine - Naval News
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The development of these submarines is also related to a larger defense strategy, which comprises a four-SSBN project led by INS Arighat and INS Arihant. Two additional submarines, designated S4 and S4*, are currently under construction.
Indian Navy To Commission Its 2nd Domestically-built Nuclear-Powered Missile Submarine
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The details of the lifetime extension program have not been made public. Saab in their press release following the re-launching of the vessel at their shipyard in Karlskrona described it as including “modifications, capability enhancements and extensive overhaul.” However, the original press release by the Swedish Defence Material Administration, FMV, back in 2022 when the order was placed used a more careful wording, which seemed to point to the scope largely being centred on avoiding obsolescence issues and general deep maintenance requirements. The only detail mentioned by FMV was the acquisition of new batteries as well as related research, which was included in the total contract sum of 470 million SEK (approximately 41 million EUR).
Swedish Submarine Södermanland Re-Launched Following Lifetime Extension - Naval News
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Suffren in numbers: Surface displacement: 4,700 tons Diving displacement: 5,100 tons Length: 99 meters Diameter: 8.8 meters Maximum depth: > 350 meters Speed: > 25 knots Armament: naval cruise missiles, F21 heavy-weight wire-guided torpedoes, modernized Exocet SM39 anti-ship missiles, FG-29 mines, D-19 UUV (future development) Hybrid propulsion: pressurized water reactor (150MW) derived from the reactors on board the Triomphant-class SSBN and Charles-de-Gaulle aircraft carrier, two propulsion turbines, two turbo generators and two electric motors Crew: 63 crew members + approx. 15 commandos Endurance: 70 days at sea (or until food supplies run out)
France’s 3rd Barracuda Type Submarine Begins Alpha Trials - Naval News
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The Italian firm said it was now installing lithium batteries to replace traditional lead-acid batteries on the new submarines, increasing range. Italian planners have also introduced a Fluoropolymer coating for the hulls of the new subs, which reduces encrustation to cut down on drag, while the hydrodynamics of the vessels were upgraded from the U-212 model by changing the bow design.
Italy signs deal for final submarine in four-strong U-212 NFS series
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(via Submarine Nuclear Power | Engineering behind it Nuclear Reactor How it Works - YouTube)
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Sinpho South Shipyard: Indications of New Submarine Construction
Sinpho South Shipyard: Indications of New Submarine Construction - 38 North: Informed Analysis of North Korea
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Specifications for the Virginia-class submarines include a displacement of 7,800 tons, a length of 377 feet, a beam of 34 feet, and a draft of 32 feet. They are powered by an S9G reactor and auxiliary diesel engine, can remain submerged for up to three months, have a test depth of over 800 feet, and can accommodate 15 officers and 120 enlisted personnel. Their armament consists of 12 vertical launch system tubes and four 21-inch torpedo tubes for Mk-48 torpedoes and BGM-109 Tomahawk missiles.
Huntington Ingalls Industries launches Virginia class Block IV submarine USS Massachusetts
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India is set to conduct a test of a newly-developed Submarine Launched Cruise Missile (SLCM) with a 500 km range from an underwater platform in early March, defence sources told India Today. This will be the second test of the submarine-launched cruise missile. The Defence Research and Development Organisation (DRDO), the developer of the missile, conducted a test in February last year.
India to test 500-km range submarine-launched cruise missile next month - India Today
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As per the defence agreement between Pakistan and China for the development of eight HANGOR Class submarines, four submarines are under construction at Wuchang Shipbuilding Industry in China. The remaining four are being built at KS&EW under Transfer of Technology (ToT) agreement. This is the second submarine to undergo keel laying at KS&EW. Earlier, in Dec 2022, Keel Laying of the first submarine was successfully undertaken and currently, it is at advanced stage of construction.
Keel laid for Pakistan Navy's second Hangor-class submarine - Naval Today
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Currently, Admiralty Shipyards is continuing construction of three more Project 677 Lada-class submarines. In December 2023, factory sea trials of the third B-587 Velikiye Luki were completed. In June 2022, the keels of the fourth and fifth were laid: Vologda and Yaroslavl. The Lada-class submarines have a displacement of 1765/2650 tons, a length of 66.8 meters, a speed of 10/21 knots, an operational depth of 300 meters, a crew of 35, an armament of six 533 mm torpedo tubes (18 torpedoes, missiles and sea mines).
Russia Commissions First Serial Lada-class Submarine - Naval News
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The M5 is for the multi-billionaire who doesn’t want to just cruise the seven seas, but wants to see what’s underneath them as well. The seacraft measures 544 feet end to end and is 75 feet wide, giving it enough room for a maximum of 20 guests and 40 crew members. It has a range of more than 9,300 miles and can travel at speeds of up to 20 knots when surfaced and 12 knots underwater. It can also descend to a depth of 820 feet and then stay there for up to four weeks.
Migaloo’s M5 Submersible Superyacht Can Dive 820 Feet Underwater – Robb Report
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KSS-III Batch-II KSS-III Batch-II submarine scale model on the ROK Navy booth at MADEX 2023. Note the 10 VLS. Displacement: 3,600t (surfaced), 4,000t (submerged) Length: 89.4m Beam: 9.7m Draught: 7.6m Weapons: 6 x 533mm ATP torpedo tubes Babcock International WHLS (K761 Tiger Shark, C-Star-III), Submarine Launched Mobile Mine (SLMM), 10 x VLS (Hyunmoo-IV-4) Propulsion System: Diesel-Electric AIP,3 x Rolls-Royce MTU 12V 4000 U83 Diesel Engine, 4 x Bumhan PH1 Fuel Cell Battery: lithium-ion battery Speed: 20 knots (submerged) Range: 18,500km (surfaced)
South Korea to develop new VLS and SLBM for its Submarines - Naval News
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The Taigei-class employs the same torpedo counter-measures system that has been incorporated into the last four Soryu-class boats. It is expected to use Japan’s newest torpedo, which is called the Type 18, succeeding the previous Type 89. The new torpedo will feature improvements in a number of areas, including propulsion, target detection, and processing. The class is also capable of deploying the UGM-84L Harpoon Block II anti-ship missile against surface targets. This missile range is 248 km – enough to provide Japan with a “counterattack” capability.
Japan Launches Fourth Taigei-Class Submarine for JMSDF - Naval News
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