Many people think that Japan was finished after Midway and with hindsight that was true however the fact remains that their naval force was comprehensive as the numbers below confirm.

I have only included 3 fleets here. Read the link for the rest.

From: http://pacific.valka.cz/forces/ijn/1941.htm



Imperial Japanese Navy Battle Order - 1941
Combined Fleet
Adm Isoroku Jamamoto

Fleet Headquarters & Fleet Direct Units
Adm Isoroku Jamamoto BB BatDiv1 (Adm Isoroku Jamamoto): Mucu, Nagato, Jamato
AV CarDiv11 (RAdm Ruitaro Fudzita): Mizuho, Cijoda, Citose CL CruDiv9 (RAdm Fukudzi Kishi): Kitakami, Oi
CX CruDiv(Aux)24 (RAdm M. Takeda): Hokoku Maru, Aikoko Maru, Kijoshima Maru SubRon4
RAdm Sezuco Joshitomi CL Kinu/SF SS SubDiv18 (Cap M. Kidzima): I-53, I-54, I-55
SubDiv19 (Cap S. Ohta): I-56, I-57, I-58
SubDiv21 (Cap E. Iwagami): RO-33, RO-34 AS Nagoja Maru SubRon5
RAdm Tadashige Daigo CL Jura/SF SS SubDiv28 (Cap Jukio Kato): I-59, I-60
SubDiv29 (Cap T. Tomaki): I-62, I-63
SubDiv30 (Cap M. Teraoka): I-65, I-66 AS Rio de Janeiro Maru Supply & Support Unit
AF Banshu Maru #3, Hakurei Maru, Kitagami Maru, Kosei Maru, Muroto, Sendai Maru, Suruga Maru, Tenjo Maru #2 AFK Irako Maru, Mamija AP Azumasan Maru, Hinoda Maru, Hokuriku Maru, Kogjo Maru, Konai Maru, Nankai Maru, Nicii Maru, Niciro Maru, Ogami Maru, Okicu Maru, Shikano Maru AO Erimo, Gojo Maru, Hishi Maru, Hishi Maru #2, Kenjo Maru, Kirishima Maru, Kokujo Maru, Korju Maru, Kurashio Maru, Kjoei Maru, Kjoei Maru #2, Kjokuto Maru, Macumato Maru, Naruto, Nichei Maru, Nippon Maru, San Clemente Maru, Shinkoku Maru, Shirija Maru, Sojo Maru, Teijo Maru, Toei Maru, Toho Maru, Tsururni Maru, Jodogawa Maru AH Asahi Maru, Tukasago Maru, Akashi, Asashi AG Settsu

1st Fleet
VAdm Shiro Takasu BB BatDiv2 (VAdm Shiro Takasu): Sect1: Hijuga/FltF,DF, Ise
Sect2: Fuso, Jamashiro
BatDiv3 (VAdm Gunici Mikawa): Sect1: Haruna, Kongo
Sect2: Hiei/DF, Kirishima
CA CruDiv6 (RAdm Aritomo Goto): Aoba, Furutaka, Kako, Kinugasa AV Shinsho Maru CarDiv3
RAdm T. Kuwabara CV Hosho/F, Zuiho DD Mikazuki, Jukaze DesRon1
RAdm Sentaro Omori CL Abukuma/SF DD DesDiv6 (Cap S. Narita): Akacuki, Hibiki, Ikazuci, Inazuma
DesDiv17 (Cap K. Sugiura): Isokaze, Urakaze, Hamakaze, Tanikaze
DesDiv21 (Cdr T. Shimizu): Hacuharu, Hacushimo, Nenohi, Wakaba
DesDiv27 (Cap M. Joshimura): Ariake, Jugure, Shiracuju, Shigure DesRon3
RAdm Sentaro Hashimoto CL Sendai/SF DD DesDiv11: (Cap K. Shoji): Fubuki, Hacujuki, Shirajuki
DesDiv12 (Cap Nobuki Ogawa): Shirakumo/DF, Murakumo, Shinonome, Usugumo (under repairs in Maizuru)
DesDiv19: (Cap R. Ohe): Isonami, Uranami, Ajanami, Shikinami
DesDiv20: (Cap J. Jamada): Asagiri, Jugiri, Amagiri, Sagiri

2nd Fleet
VAdm Nobutake Kondo CA CruDiv4 (VAdm Nobutake Kondo): Takao/FltF,F, Atago, Cokai, Maja
CruDiv5 (RAdm Takeo Takagi): Haguro, Mjoko, Naci
CruDiv7 (RAdm Takeo Kurita): Kumano/DF, Mikuma, Mogami, Suzuja
CruDiv8 (RAdm Hiroaki Abe): Tone/DF, Cikuma AGP Kamikaze Maru DesRon2
RAdm RAizo Tanaka CL Dzincu/SF DD DesDiv8 (Cap T. Abe): Asashio, Oshio, Micishio, Arashio
DesDiv15 (Cap T. Sato): Kuroshio, Ojashio, Nacushio, Hajashio
DesDiv16 (Cap S. Shibuja): Hacukaze, Jukikaze, Amacukaze, Tokicukaze
DesDiv18 (Cap J. Mijasaka): Arare, Kasumi, Kagero, Shiranui DesRon4
RAdm T. Nishimura CL Naka/SF DD DesDiv2 (Cap. M. Tacibana): Murasame, Judaci, Samidare, Harusame
DesDiv4 (Cap K. Aruga): Maikaze, Nowaki, Arashi, Hagikaze
DesDiv9 (Cdr Jasuo Sato): Nacugumo, Jamagumo, Minegumo, Asagumo
DesDiv24 (Cap Jasudzi Hirai): Jamakaze, Kawakaze, Umikaze, Suzukaze