JMSDF Self-Defense Fleet ENG (@JMSDF_SDF_ENG) header
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In this account, we will inform you about the activities of the Self-Defense Fleet, which is the main force of the JMSDF. Please follow us.

Joined March 2021
During the maritime phase of #MALABAR2026, personnel from participating naval vessels and aircraft are conducting exercises to uphold international law, freedom of navigation, and sovereignty - supporting regional stability and #FOIP.🚢✈️ @Australian_Navy @Indiannavy @US7thFleet
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During the maritime phase of #MALABAR2026, personnel from participating naval vessels and aircraft are conducting exercises to strengthen interoperability and contribute to Free and Open Indo-Pacific (#FOIP). 🚢✈️ @Australian_Navy @Indiannavy @US7thFleet
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Self Defense Fleet staff conducted SMEE at #MALABAR2026 to enhance interoperability and support #FOIP through exchanging views on issues in various specialized fields and directions for improving future interoperability. @Australian_Navy @Indiannavy @US7thFleet
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At the #MALABAR2026 flag meeting, commanders from all four nations shared perspectives on maritime security in the Indo-Pacific to realize a #FOIP and discussed the future development of the MALABAR exercise. @Australian_Navy @Indiannavy @US7thFleet
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VADM OMACHI Katsushi, Commander, Self Defense Fleet, attended the opening ceremony of #MALABAR2026 and emphasized the importance of enhancing tactical proficiency and strengthening trust among participating navies to realize a #FOIP. @Australian_Navy @Indiannavy @US7thFleet
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“Pride Day” was held at U.S. Yokosuka Base.Several teams competed in 4 events such as free-style performance and boat rowing in the rain. CNFJ/CFAY team including JMSDF members won a victory. We’ll keep committed to strengthening the Japan-U.S. Alliance through such activities.
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On Oct. 22, RADM Jeff MURRAY, Deputy Commander, @RoyalCanNavy (RCN) visited the Maritime Operation Center and had an office call with VADM OMACHI Katsushi, Commander, Self Defense Fleet to exchange views on strengthening cooperation between 🇯🇵 and 🇨🇦. #FOIP
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On Oct. 16, RADM Yann Bied CHARRETON, the commander, French Pacific Command ( @CPP_FAPF ) visited the MOC and had an office call with RADM KONNO Yasushige, Chief of Staff, Commander Self Defense Fleet, and exchanged views on strengthening cooperation between 🇯🇵 and 🇫🇷. #FOIP
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The Self Defense Fleet is participating in #KeenSword27 to enhance Japan-U.S. bilateral readiness under realistic combat scenarios, strengthening the alliance and bolstering deterrence to ensure peace and stability in the region. #JapanUSAlliance #FOIP
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On Oct.20, VADM OMACHI Katsushi, Commander, Self Defense Fleet presented a letter of commendation to CDR Timothy P. BAKER, staff officer of the @US7thFlt. for his efforts to strengthen cooperation between the Self Defense Fleet and the U.S. Navy. #FOIP
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On Oct.16, JGSDF Command & General Staff (CGS) students from JGSDF Training Evaluation Research and Development Command (@jgsdf_tercom) visited the JMSDF MOC for a tour. During the visit, an exchange of views was held regarding cooperation between the JMSDF and the JGSDF.
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Commander, Self Defense Fleet visited JMSDF units in Kanoya/Sasebo (Oct.15-16)to inspect personnel conditions. At JS #Kirisame departure ceremony (Oct.17), he encouraged personnel for their 6-month counter-piracy mission and thanked their families/friends for the support. #FOIP
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