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Ships |
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| Type | Class | 1990 | 1995 | 2000 | 2002 | 2005 | 2010 | 2015 | 2020 |
| Destroyer | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Major Surface Combatants | 57 | 61 | 57 | 57 | 52 | 47 | 47 | 45 | |
| Large Destroyers | 9 | 11 | 13 | 13 | 13 | 13 | 13 | 12 | |
| DDH (Helicopter Destroyer) | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | DDH-141 Haruna | 2 | 2 | 2 | 2 | 2 | 1 | - | - |
| DDH-143 Shirane | 2 | 2 | 2 | 2 | 2 | 2 | 1 | - | |
| DDH-181 Hyuga | - | - | - | - | - | 1 | 3 | 4 | |
| DDG (Guided Missile Destroyer) | 5 | 7 | 9 | 9 | 9 | 9 | 9 | 8 | |
| DDG-163 Amatsukaze | 1 | - | - | - | - | - | - | - | |
| DDG-168 Tachikaze | 3 | 3 | 3 | 3 | 3 | - | - | - | |
| DDG-171 Hatakaze | 2 | 2 | 2 | 2 | 2 | 2 | 2 | - | |
| DDG-173 Kongo | - | 2 | 4 | 4 | 4 | 4 | 4 | 4 | |
| DDG-177 Atago | - | - | - | - | - | 2 | 3 | 4 | |
| Small Destroyers | [Frigates, Corvettes] | 48 | 50 | 44 | 44 | 39 | 34 | 34 | 33 |
| DD (Destroyer) | 19 | 20 | 26 | 29 | 30 | 31 | 31 | 30 | |
| DD-122 Hatsuyuki | 12 | 12 | 12 | 12 | 11 | 11 | 6 | - | |
| DD-151 Asagiri | 7 | 8 | 8 | 8 | 6 | 6 | 6 | 6 | |
| DD-101 Murasame | - | - | 6 | 9 | 9 | 9 | 9 | 9 | |
| DD-110 Takanami | - | - | - | - | 4 | 5 | 5 | 5 | |
| DD-115 19DD 5000 ton | - | - | - | - | - | - | 5 | 10 | |
| DDA (All Purpose Destroyer) | 4 | 4 | 2 | 2 | - | - | - | - | |
| DDA-164 Takatsuki | 4 | 4 | 2 | 2 | - | - | - | - | |
| DDK (Anti Submarine Destroyer) | 9 | 6 | 3 | 3 | - | - | - | - | |
| DDK-116 Minegumo | 3 | 3 | - | - | - | - | - | - | |
| DDK-113 Yamagumo | 6 | 3 | 3 | 3 | - | - | - | - | |
| DE (Escort Vessel) | 16 | 20 | 13 | 10 | 9 | 3 | 3 | 3 | |
| DE-215 Chikugo | 11 | 11 | 4 | 1 | - | - | - | - | DE-226 Ishikari | 1 | 1 | 1 | 1 | 1 | - | - | - |
| DE-227 Yubari | 2 | 2 | 2 | 2 | 2 | - | - | - | |
| DE-229 Abukuma | 2 | 6 | 6 | 6 | 6 | 3 | 3 | 3 | Patrol Combatant Craft |
| PG (Patrol Guided Missile Boat) | - | 3 | 3 | 5 | 9 | 7 | 7 | 7 | |
| PG 1-go | - | 3 | 3 | 3 | 3 | 3 | 3 | 3 | PG Hayabusa | - | - | - | 2 | 6 | 4 | 4 | 4 |
| Submarine | |||||||||
| SS (Submarine) | 22 | 18 | 16 | 16 | 16 | 16 | 16 | 16 | |
| SS-566 Uzushio | 5 | 1 | - | - | - | - | - | - | |
| SS-573 Yushio | 10 | 10 | 7 | 5 | 2 | - | - | - | SS-583 Harushio | 7 | 7 | 6 | 6 | 6 | 3 | - | - |
| SS-590 Oyashio | - | - | 3 | 5 | 8 | 11 | 11 | 8 | |
| SS-501 Soryu / SS 2,900 ton | - | - | - | - | - | 2 | 5 | 8 | |
| Mine Warfare Ship | |||||||||
| MSO (Minesweeper Ocean) | - | 3 | 3 | 3 | 3 | 3 | - | - | |
| MSO Yaeyama | - | 3 | 3 | 3 | 3 | 3 | - | - | |
| MSC (Minesweeper Coastal) | 25 | 29 | 25 | 24 | 24 | 27 | - | - | |
| MSC-649 Hatsushima | 23 | 22 | 13 | 10 | 5 | 5 | - | - | MSC-672 Uwajima | 2 | 7 | 9 | 9 | 9 | 9 | - | - |
| MSC-681 Sugashima | - | - | 3 | 5 | 10 | 12 | - | - | |
| MSC-601 Hirashima 16MS 570 ton | - | - | - | - | - | 3 | - | - | |
| MCL (Minesweeper Controller) | - | - | - | 2 | 2 | 2 | - | - | |
| MCL Niijima | - | - | - | 2 | 2 | 2 | - | - | |
| MST (Minesweeper Tender) | 1 | 1 | 2 | 2 | 2 | 2 | - | - | |
| MST Hayase | 1 | 1 | - | - | - | - | - | - | |
| MST Uraga | - | - | 2 | 2 | 2 | 2 | - | - | |
| Amphibious Ship | |||||||||
| LST (Landing Ship Tank) | 6 | 6 | 5 | 4 | 4 | 3 | - | - | |
| LST Osumi | - | - | 1 | 2 | 3 | 3 | - | - | |
| LST Atsumi | 3 | 3 | 1 | 1 | 1 | - | - | - | |
| LST Miura | 3 | 3 | 3 | 1 | - | - | - | - | |
| LSU (Landing Ship Utility) | 2 | 2 | 2 | 2 | 2 | 2 | - | - | |
| LSU Yura | 2 | 2 | 2 | 2 | 2 | 2 | - | - | |
| LCU (Landing Craft Utility) | 1 | 2 | 2 | 2 | 2 | 2 | - | - | |
| LCU 1-go | 1 | 2 | 2 | 2 | 2 | 2 | - | - | |
| Training Ship | |||||||||
| TV (Training Vessel) | 1 | 2 | 3 | 3 | 5 | 4 | - | - | |
| TV Katori | 1 | 1 | - | - | - | - | - | - | |
| TV Kashima | - | 1 | 1 | 1 | 1 | 1 | - | - | TV Shimayuki | - | - | 1 | 1 | 1 | 1 | - | - |
| TV Aokumo | - | - | 1 | 1 | 1 | - | - | - | |
| TV Yamagiri | - | - | - | - | 2 | 2 | - | - | |
| TSS (Training Submarine) | - | - | 2 | 2 | 2 | 3 | 2 | 2 | |
| TSS Asashio | - | - | 1 | 1 | 1 | 3 | 2 | 2 | TSS Hamashio | - | - | 1 | 1 | 1 | - | - | - |
| ATS (Training Support Ship) | 2 | 2 | 2 | 2 | 2 | 2 | - | - | |
| ATS Azuma | 1 | 1 | - | - | - | - | - | - | |
| ATS Kurobe | 1 | 1 | 1 | 1 | 1 | 1 | - | - | ATS Tenryu | - | - | 1 | 1 | 1 | 1 | - | - | Auxiliary Ship |
| AMS (Multi Purpose Support Ship) | - | - | - | 1 | 3 | 3 | - | - | |
| AMS Hiuchi | - | - | - | 1 | 3 | 3 | - | - | |
| AGS (Oceanographic Research Ship) | 4 | 4 | 4 | 4 | 4 | 4 | - | - | |
| AGS Akashi | 1 | 1 | - | - | - | - | - | - | |
| AGS Futami | 2 | 2 | 2 | 2 | 2 | 2 | - | - | |
| AGS Suma | 1 | 1 | 1 | 1 | 1 | 1 | - | - | |
| AGS Nichinan | - | - | 1 | 1 | 1 | 1 | - | - | |
| AOS (Ocean Surveillance Ship) | - | 2 | 2 | 2 | 2 | 2 | - | - | |
| AOS Hibiki | - | 2 | 2 | 2 | 2 | 2 | - | - | |
| AGB (Auxiliary Ice Breaker) | 1 | 1 | 1 | 1 | 1 | 1 | - | - | |
| AGB Shirase | 1 | 1 | 1 | 1 | 1 | 1 | - | - | |
| ARC (Repairing or Cable Laying Ship) | 1 | 1 | 1 | 1 | 1 | 1 | - | - | |
| ARC Muroto | 1 | 1 | 1 | 1 | 1 | 1 | - | - | |
| ASR (Submarine Rescue Vessel) | 1 | 1 | 1 | 1 | 1 | 1 | - | - | |
| ASR Fushimi | 1 | 1 | - | - | - | - | - | - | |
| ASR Chihaya | - | - | 1 | 1 | 1 | 1 | - | - | |
| AS (Submarine Rescue Tender) | 1 | 1 | 1 | 1 | 1 | 1 | - | - | |
| AS Chiyoda | 1 | 1 | 1 | 1 | 1 | 1 | - | - | |
| ASE (Auxiliary Ship Experiment) | 1 | 2 | 2 | 2 | 2 | 2 | - | - | |
| ASE Kurihama | 1 | 1 | 1 | 1 | 1 | 1 | - | - | |
| ASE Asuka | - | 1 | 1 | 1 | 1 | 1 | - | - | |
| AOE (Fast Combat Support Ship) | 4 | 4 | 4 | 4 | 6 | 5 | - | - | |
| AOE Sagami | 1 | 1 | 1 | 1 | 1 | - | - | - | |
| AOE Towada | 3 | 3 | 3 | 3 | 3 | 3 | - | - | |
| AOE Mashu | - | - | - | - | 2 | 2 | - | - | |
| LCAC (Landing Craft Air Cushion) | - | - | 2 | 4 | 6 | 6 | - | - | |
| LCAC 1-go | - | - | 2 | 4 | 6 | 6 | - | - | |
| ASY (Auxiliary Vessel Special Service Yacht) | 1 | 1 | 1 | 1 | 1 | 1 | - | - | |
| ASY Hashidate | - | - | 1 | 1 | 1 | 1 | - | - | |
| ASY Hiyodori | 1 | 1 | - | - | - | - | - | - | |
