Engineering:Mogami-class frigate

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JS Kumano(FFM-2) left front view at Mitsui Engineering & Shipbuilding Tamano Shipyard November 19, 2020 03.jpg
Class overview
Name: Mogami class
Builders:
Operators:  Japan Maritime Self-Defense Force
Preceded by: Abukuma class
Cost: ¥50.0 billion[1]
Built: 2019–present
In commission: 2022–2032 (planned)
Planned:
  • 8 (first batch)
  • 22 (total planned)
Building: 4
General characteristics
Type: Frigate
Displacement:
  • 3,900 tons standard
  • 5,500 tons full load
Length: 130 m (426 ft 6 in)
Beam: 16 m (52 ft 6 in)
Propulsion:
Speed: over 30 knots (56 km/h; 35 mph)
Boats & landing
craft carried:		 2 x RHIB, UUV, USV
Crew: 90
Sensors and
processing systems:
  • OPY-2 (X-band multi-purpose AESA radar)
  • OAX-3(EO/IR)
  • OQQ-25 (VDS + TASS)
  • OQQ-11 (Mine-hunting sonar)
  • OYQ-1 (Combat management system)
  • OYX-1-29 (Console display system)
Electronic warfare
& decoys:		 NOLQ-3E (Passive radar system + Electronic attack capability is integrated into the main radar antenna), Chaff dispenser
Armament:
  • 1 × 5 in (127 mm) Mk-45 Mod 4 naval gun
  • 2 × missile canisters for a total of 8 Type 17 anti-ship missiles
  • 1 × SeaRAM
  • Type 12 torpedoes
  • Simplified mine laying equipment
  • 16 x Mk-41 VLS
  • Naval version of Type 03 Chū-SAM
  • 2 x Remote weapon station
Aircraft carried: 1 × SH-60L helicopter
Aviation facilities: Single hangar

The Mogami-class frigate (also known as 30FFM, 30FF, 30DX, or 30DEX) is a Japanese stealthy multi-mission frigate in development for the Japan Maritime Self-Defense Force (JMSDF).

Development

In 2015 the Japanese defense budget allocated funds to study the construction of a new "compact-type hull destroyer with additional multi-functional capabilities" as well as a new radar system for the destroyer.[2] In the same year Mitsubishi Heavy Industries (MHI) unveiled the frigate's first concept model (30FF) which they have been developing with their own funds.[1][3]

In August 2017, the Acquisition, Technology & Logistics Agency (ATLA) selected MHI and Mitsui Engineering and Shipbuilding as the prime contractor and subcontractor to construct the frigate. In addition, the agency also selected a completely new design of the vessel (30DX). The new ship is set to replace the Asagiri-class destroyers and Abukuma-class destroyer escorts.[1]

Construction of the 30DX was to begin in 2018. A total of twenty-two units to this design are planned by 2032, of which the first eight were under contract by 2018; a pair are to be built each year.[4]

Design

The original design to be used was the 30FF model. The ship's design looked similar to the United States Navy's Freedom-class littoral combat ship with an integrated mast. Its armament included a 5"/54 caliber Mark 45 gun, two remote weapon stations between the bridge and main gun, a SeaRAM above the helicopter hangar, and a helicopter. The length of the vessel was 120 metres (393 ft 8 in), with a max beam of 18 metres (59 ft 1 in), and a displacement of about 3,000 metric tons (3,000 long tons). The design had a planned maximum speed of 40 knots (74 km/h; 46 mph) and accommodated a crew of about 100.[1][5]

However, the 30DX model was later chosen to be constructed. The 30DX design (although modern) is more conservative compared to the 30FF's more radical approach. The three main factors for the design change is due to the need for affordability, miniaturization/automation, and multi-mission capabilities.[1] The vessel has an overall length of 130 metres (426 ft 6 in), breadth of 16 metres (52 ft 6 in), a standard displacement of 3,900 metric tons (3,800 long tons) with a full load displacement of about 5,500 metric tons (5,400 long tons), and a maximum speed of over 30 knots (56 km/h; 35 mph).[6] Weapons include a Mk 45 gun, two remote weapon stations above the bridge, 16 Mk 41 Vertical Launching System (VLS) at the bow, 8 anti-ship missiles, one SeaRAM, an SH-60L helicopter, torpedoes, and decoy launchers. It can also deploy and recover unmanned underwater vehicles (UUV), unmanned surface vehicles (USV), and sea mines from the rear ramp beneath the helideck.[7] It is also expected to use a naval version of the Type 03 Chū-SAM.[8]

The stealthy design of both models is based on the research and development from the Mitsubishi X-2 Shinshin (then ATD-X) stealth fighter technology demonstrator, as both platforms are designed by Mitsubishi Heavy Industries.[6][9] Along with stealth capabilities, the frigate also emphasizes on having a high level of automation. This allows the frigate to possess a low crew size of only 90 personnel compared to other ships of similar size.[10]

The frigates will be powered by a Rolls-Royce MT30 gas turbine.[11]

The overall design of the 30DX is to achieve a frigate-sized vessel with the capabilities similar to the Akizuki-class destroyer but with half the VLS cells.[7]

3D concept rendering of 30DX frigate

At Sea Air Space 2019, Mitsubishi Heavy Industries revealed 'Advanced Integrated CIC' for the vessel. According to the report, it combined wheelhouse, managing and situational awareness room, engine and power control room, and combat information center with a large 360-degree circular screen wall. It can display panoramic views around the ship without a blind spot on the screen, and also utilized the augmented reality technology to discriminate the objects and navigate the ship.[10]

Ships in the class

Pennant No. Name Laid down Launched Commissioned Builder
FFM-1 JS Mogami 29 October 2019 3 March 2021[12] Scheduled for March 2022 Mitsubishi, Nagasaki
FFM-2 JS Kumano 30 October 2019 19 November 2020 Scheduled for March 2022 Mitsui, Tamano
FFM-X Unnamed (Reiwa 1 planed FFM) 15 July 2020 Scheduled for June 2021[13] Scheduled for December 2023 Mitsubishi, Nagasaki
FFM-X Unnamed (Reiwa 1 planed FFM) 15 July 2020 TBA Scheduled for March 2024[14] Mitsubishi, Nagasaki
FFM-X Unnamed TBA Mitsubishi, Nagasaki
TBA Mitsui, Tamano

Export

Both frigate designs has been showcased in four naval exhibitions to attract potential export customers. The 30FF has been shown in PACIFIC 2015 as a contender for Australian Navy's SEA5000 ASW Frigate Program and in Sea Air Space 2017.[5][9] The 30DX design has been shown in Sea Air Space 2018 (as well as 2019) and Euronaval 2018.[7][15]

Japan plans to export four frigates to Indonesia, and another four will be built in Indonesia under ¥300 billion contract.[16][17]

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 "Japan's ATLA Selected MHI & Mitsui to build 30DX Surface Combatant for JMSDF". 16 August 2017. http://www.navyrecognition.com/index.php/news/defence-news/2017/august-2017-navy-naval-forces-defense-industry-technology-maritime-security-global-news/5480-japan-s-atla-selected-mhi-mitsui-to-build-30dx-surface-combatant-for-jmsdf.html. 
  2. ↑ "Defense Programs and Budget of Japan Overview of FY2015 Budget". January 2015. http://www.mod.go.jp/e/d_budget/pdf/270414.pdf. 
  3. ↑ "Mitsubishi Heavy Industries Unveiled 30FF or DEX Next Generation Vessel Concept for the JMSDF". 12 June 2015. http://www.navyrecognition.com/index.php/news/defence-news/year-2015-news/june-2015-navy-naval-forces-defense-industry-technology-maritime-security-global-news/2821-mitsubishi-heavy-industries-unveiled-30ff-or-dex-next-generation-vessel-concept-for-the-jmsdf.html. 
  4. ↑ "Acquisition Program Analysis and Evaluation Report (New frigate)". Ministry of Defense (Japan). 31 August 2018. pp. 27-28. https://www.mod.go.jp/atla/pinup/pinup300831_02.pdf. 
  5. ↑ 5.0 5.1 DefenseWebTV (5 April 2017). "Sea-Air-Space 2017 Day 3 / Part 1 - International Presence & US Naval Technology". https://www.youtube.com/watch?v=1B-vNx_WUoQ. 
  6. ↑ 6.0 6.1 DefenseWebTV (12 April 2018). "Sea-Air-Space 2018 Day 3 - JMSDF 30DX - Zodiac H-1300 - MARTAC Mantas - HII LX(R) - Airbus VSR700". https://www.youtube.com/watch?v=BJhRFeoyvBU&t=199s. 
  7. ↑ 7.0 7.1 7.2 "SAS 2018: Japan's MHI Showcasing 30DX Multi-Mission Frigate Design". 12 April 2018. http://www.navyrecognition.com/index.php/news/naval-exhibitions/2018/sea-air-space-2018/6136-sas-2018-japan-s-mhi-showcasing-30dx-multi-mission-frigate-design.html. 
  8. ↑ Takahashi, Kosuke (2 November 2018). "MHI to build two new multirole frigates for JMSDF". https://www.janes.com/article/84241/mhi-to-build-two-new-multirole-frigates-for-jmsdf. 
  9. ↑ 9.0 9.1 "PACIFIC 2015: Pictures of the Contenders for the Australian Navy SEA5000 ASW Frigate Program". 10 October 2015. http://www.navyrecognition.com/index.php/news/naval-exhibitions/2015/pacific-2015-naval-show-daily-news/3162--pacific-2015-pictures-of-the-contenders-for-the-australian-navy-sea5000-asw-frigate.html. 
  10. ↑ 10.0 10.1 "JMSDF Future Frigate To Feature Futuristic 360° Augmented Reality Wall". Naval News. 28 May 2019. https://www.navalnews.com/event-news/sas-2019/2019/05/jmsdf-future-frigate-to-feature-futuristic-360-augmented-reality-wall/. 
  11. ↑ "Rolls-Royce MT30 Gas Turbine to Power Japan’s New 30FFM Frigate". 29 May 2018. http://www.navyrecognition.com/index.php/news/defence-news/2018/may-2018-navy-naval-defense-news/6248-rolls-royce-mt30-gas-turbine-to-power-japan-s-new-30ffm-frigate.html. 
  12. ↑ Takahashi, Kosuke. "Japan's MHI launches second 3,900 tonne-class multirole frigate for JMSDF" (in en). https://www.janes.com/defence-news/news-detail/japans-mhi-launches-second-3900-tonne-class-multirole-frigate-for-jmsdf. 
  13. ↑ "laying down ceremony held for FY Reiwa 1 planned multirole frigate.". https://www.mod.go.jp/rdb/kyushu/topics/020715kikousiki/index.htm. 
  14. ↑ "laying down ceremony held for FY Reiwa 1 planned multirole frigate.". https://www.mod.go.jp/rdb/kyushu/topics/020715kikousiki/index.htm. 
  15. ↑ "Euronaval 2018: Mitsubishi from Japan new concept of Future Multi-Mission Frigate". 26 October 2018. http://www.navyrecognition.com/index.php/news/naval-exhibitions/2018/euronaval-2018/6646-euronaval-2018-mitsubishi-from-japan-new-concept-of-future-multi-mission-frigate.html. 
  16. ↑ [1] [|permanent dead link|dead link}}]
  17. ↑ "Japan plans to export MSDF destroyer to Indonesia". The Japan Times. 5 November 2020. https://www.japantimes.co.jp/news/2020/11/05/national/msdf-destroyer-indonesia/. 




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