| Nagato (b) Class | (Drednought) | CEF: 140 | Class: 6 | Speed: 24 | Units: 6 |
| Length | Width | Len/Width | Std Disp | Full Disp | |
| As Built | 738 | 114 | 6.47 | 39130 | 42850 |
| Model | 61.50 | 9.50 | 6.47 | 29.35 | 32.15 |
| Armour | 12 | Guns | 8 | Diameter | 15 | Rudders | 2 | Props | 4 |
| Ship | Launched | Fate | Notes |
| IJN Nagato | Nov 19 | sunk July 29 1946 | rebuilt 36 |
| IJN Mutsu | May 20 | Sunk June 8 1943 | rebuilt 36 |
| Yamato Class | (Battleship) | CEF: 120 | Class: 8 | Speed: 24 | Units: 8 |
| Length | Width | Len/Width | Std Disp | Full Disp | |
| As Built | 863 | 127 | 6.80 | 64000 | 72000 |
| Model | 71.92 | 10.58 | 6.80 | 48.01 | 54.01 |
| Armour | 16 | Guns | 9 | Diameter | 18 | Rudders | 2 | Props | 4 |
| Ship | Launched | Fate | Notes |
| IJN Yamato | Aug 1940 | sunk Apr 1945 | - |
| IJN Musashi | Nov 1940 | sunk Oct 1944 | - |
| Fuso (b) Class | (Battleship) | CEF: 96 | Class: 5 | Speed: 26 | Units: 5.5 |
| Length | Width | Len/Width | Std Disp | Full Disp | |
| As Built | 698 | 109 | 6.40 | 34700 | 39154 |
| Model | 58.17 | 9.08 | 6.40 | 26.03 | 29.37 |
| Armour | 12 | Guns | 12 | Diameter | 14 | Rudders | 2 | Props | 4 |
| Ship | Launched | Fate | Notes |
| IJN Fuso | Mar 1914 | sunk Oct. 25 1944 | rebuilt 1930-1935 |
| IJN Yamashiro | Nov 1915 | sunk Oct 25 1944 | rebuilt 1930-1935 |
| Kongo (b) Class | (Battlecruiser) | CEF: 63 | Class: 4 | Speed: 24 | Units: 4.5 |
| Length | Width | Len/Width | Std Disp | Full Disp | |
| As Built | 729 | 103 | 7.08 | 32200 | 36400 |
| Model | 60.75 | 8.58 | 7.08 | 24.16 | 27.31 |
| Armour | 8 | Guns | 8 | Diameter | 14 | Rudders | 2T | Props | 4 |
| Ship | Launched | Fate | Notes |
| Kongo | May 12 | sunk Nov 21 1944 | rebuilt 1934 |
| Hi-Yei | Nov 12 | sunk Nov 13 1942 | rebuilt 1934 |
| Haruna | Dec 13 | sunk Nov 15 1942 | rebuilt 1934 |
| Kirishima | Dec 13 | sunk July 28 1945 | rebuilt 1934 |
| Mogami (b) Class | (Heavy Cruiser) | CEF: | Class: 3 | Speed: 24 | Units: 3 |
| Length | Width | Len/Width | Std Disp | Full Disp | |
| As Built | 639 | 60 | 10.65 | 12400 | 14800 |
| Model | 53.25 | 5.00 | 10.65 | 9.30 | 11.10 |
| Armour | 2 | Guns | 10 | Diameter | 8 | Rudders | 2T | Props | 4 |
| Ship | Launched | Fate | Notes |
| Mogami | Mar 34 | sunk Oct 25 1944 | rebuilt 1943 as seaplane carrier |
| Mikuma | May 34 | sunk Jun 6 1942 | - |
| Suzuya | Nov 34 | sunk Oct 25 1944 | - |
| Kumano | Oct 36 | sunk Nov 25 1944 | - |
| Takao (b) Class | (Heavy Cruiser) | CEF: | Class: 3 | Speed: 24 | Units: 3.5 |
| Length | Width | Len/Width | Std Disp | Full Disp | |
| As Built | 669 | 68 | 9.84 | 13400 | 14838 |
| Model | 55.75 | 5.67 | 9.84 | 10.05 | 11.13 |
| Armour | Guns | 4 | Diameter | 10 | Rudders | ? | Props | 1 |
| Ship | Launched | Fate | Notes |
| Takao | May 30 | scuttled Oct 27 1946 | By RN after war |
| Atago | June 30 | sunk Oct 23 1944 | - |
| Tyokai | Apr 31 | sunk Oct 25 1944 | - |
| Maya | Nov 30 | sunk Oct 23 1944 | - |
| Agano Class | (Light Cruiser) | CEF: | Class: 2 | Speed: 23 | Units: 2.5 |
| Length | Width | Len/Width | Std Disp | Full Disp | |
| As Built | 572 | 50 | 11.44 | 6700 | 8600 |
| Model | 47.67 | 4.17 | 11.44 | 5.03 | 6.45 |
| Armour | 2 | Guns | 6 | Diameter | 6 | Rudders | 1 | Props | 4 |
| Ship | Launched | Fate | Notes |
| IJN Agano | Oct 22 1941 | sunk Feb 17 1944 | - |
| IJN Noshiro | July 19 1942 | sunk Oct 26 194 | |
| IJN Yahagi | Oct 25 1942 | sunk Apr 7 1945 | - |
| IJN Sakawa | Apr 9 1944 | sunk July 1 1946 | sunk in A-bomb test |
| Akizuki Class | (Destroyer) | CEF: | Class: 1 | Speed: 22 | Units: 1.5 |
| Length | Width | Len/Width | Std Disp | Full Disp | |
| As Built | 440 | 38 | 11.58 | 2700 | 4400 |
| Model | 36.67 | 3.17 | 11.58 | 2.03 | 3.30 |
| Armour | 0 | Guns | 8 | Diameter | 3.9 | Rudders | 2 | Props | 2 |
| Ship | Launched | Fate | Notes |
| IJN Akizuki | July 2 1941 | sunk Oct 25 1944 | |
| IJN Teruzuki | Nov 21 1941 | sunk Dec 12 1942 | - |
| IJN Suzutsuki | Mar 4 1942 | scrapped after war | |
| IJN Hatsutsuki | Apr 3 1942 | sunk Oct 25 1944 | |
| IJN Niizuki | June 29 1942 | sunk July 6 1943 | |
| IJN Wakatsuki | Nov 24 1942 | sunk Nov 11 1944 | |
| IJN Shimotsuki | Apr 7 1943 | sunk Nov 25 1944 | |
| IJN Fuyutsuki | Jan 20 1944 | scrapped after war | |
| IJN Harutsuki | Aug 3 1944 | scrapped ? | x-fer'd to USSR 08/28/47 as Pospeshny |
| IJN Yoizuki | Sep 25 1944 | scrapped 1963 | x-fer'd to China 08/29/47 as Fen Yang |
| IJN Hanatsuki | Oct 10 1944 | sunk Feb 3 1948 | x-fer'd to USN -sunk as target |
| IJN Natsuzuki | Dec 2 1944 | scrapped Mar 1 1948 | x-fer'd to UK 09/03/47 |
| I400 Class | (Submarine) | CEF: | Class: - | Speed: ? | Units: - |
| Length | Width | Len/Width | Std Disp | Full Disp | |
| As Built | 394 | 39 | 10.10 | 3530 | 6560 |
| Model | 32.83 | 3.25 | 10.10 | 2.65 | 4.92 |
| Armour | - | Guns | 1 | Diameter | 5.5 | Rudders | 1 | Props | 2 |
| Ship | Launched | Fate | Notes |
| I-400 | 1944 | sunk 1946 | scuttled by USN |
| I-401 | 1944 | sunk 1946 | scuttled by USN |
| I-402 | 1944 | sunk 1946 | scuttled by USN |
| I-403 | - | - | never completed |
| I-404 | 1944 | scrapped July 46 | never completed |
| I-405 | - | - | never completed |