I-20 ex No-46

Type Builder Name Laid Down Launched Completed Notes
C1
Mitsubishi Kobe
16/11/1937 25/01/1939 26/09/1940 Home Base:Yokosuka Naval Base;
15/11/1939-15/11/1940=Sub.Div.2; Submarine School; Otake;
15/11/1940-01/02/1942=Sub.Div.2; Sub.Ron.1; 6th Fleet; Combined Fleet;
01/02/1942-10/03/1942=Sub.Div.1; 6th Fleet; Combined Fleet;
10/03/1942-04/08/1943=Sub.Div.1; Sub.Ron.8; 6th Fleet; Combined Fleet;
04/08/1943-25/09/1943=Sub.Div.1; Sub.Ron.1; 6th Fleet;Combined Fleet;
25/09/1943-01/12/1943=Sub.Div.2; Sub.Ron.1; 6th Fleet; Combined Fleet;

CEO:Cdr.Yamada Takashi [49]=25/03/1940-26/09/1940;
CO:Cdr.Yamada Takashi [49]=26/09/1940-15/09/1942;
CO:Cdr.Yoshimura Iwao [51]=15/09/1942-18/12/1942;
CO:Lt.Cdr.Kudo Kaneo [56]=18/12/1942-02/06/1943;
CO:Lt.Cdr.Otsuka Tadasu [56]=02/06/1943-03/09/1943+KIA;

11/01/1942 Shelled Pago-Pago, Samoa;
07/12/1941 Launched M'Sub.#? Ens.Hiroo Akira; PearlHarbour;+
30/05/1942 Launched M'Sub.#? Lt. Akiedo Saburo; DiegoSuarez;+
07/11/1942 Launched M'Sub.#11; Lt(jg) Kunihiro Nobuharu; Guadalcanal;
19/11/1942 Launched M'Sub.#37; Lt(jg) Miyoshi Yoshiaki; Guadalcanal;
02/12/1942 Launched M'Sub.#8; Lt(jg) Tanaka Chiaki;Guadalcanal;

? Renumbered I-20;
02/04/1943Dam.Collision I-16:
03/09/1943 Sunk=150 m.ne.Espirito Santo;13*10'S;165*28'E;
US.DD.Ellett;
Survivors; 101 KIA;
01/12/1943 Removed from Navy List;

SortiesbySub Ships Attacked

[Cdr.Yamada Takashi] [49]
18/11/1941Kure-18/11/1941Kamegakubi=Transit;
19/11/1941Kamegakubi-20/12/1941Kwajalein=Hawaii;(M'Sub);
04/01/1942Kwajalein-24/01/1942Kwajalein=Samoa-Fiji;
l/01/1942Kwajalein-01/02/1942Yokosuka=Transit;
16/04/1942Hashirajima-27/04/1942Penang=Transit;
30/04/1942Penang-05/08/1942Penang=IndianOcean-Madagascar(M'Sub)-MozambiqueChannel-Gulf of Aden;
m/08/1942Penang-23/08/1942Yokosuka=Transit(Repairs);
[Cdr.Yoshimura Iwao] [51]
24/10/1942Japan-30/10/1942Truk=Transit;
31/10/1942Truk-04/11/1942Shortland=Transit;
05/11/1942Shortland-12/11/1942Truk=Guadalcanal(M'Sub);
13/11/1942Truk-24/11/1942Truk=Guadalcanal(M'Sub);
26/11/1942Truk-08/12/1942Truk=Savo Is.(M'Sub);
[Lt.Cdr.Kudo Kaneo] [56]
26/12/1942Truk-02/01/1943Shortland=Guadalcanal(Supply25t);
05/01/1943Shortland-12/01/1943Shortland=Guadalcanal(Supply18t);
20/01/1942Shortland-24/01/1942Shortland=Guadalcanal(Supply Unkato);
l/01/1942Shortland- l/01/1942Truk=Transit;Repairs;
18/03/1943Truk- m/03/1943Rabaul=Lae(Supply30t);
25/03/1943Rabaul-29/03/1943Rabaul=Lae(Supply);
01/04/1943Rabaul-05/04/1943Rabaul=Lae(Supply37t;Rescued39men);
07/04/1943Rabaul-11/04/1943Rabaul=Lae(Supply30t;Rescued42men);
13/04/1943Rabaul-17/04/1943Rabaul=Lae(Supply37t;Rescued40men);
18/04/1943Rabaul-22/04/1943Rabaul=Kolombangara(Supply);
30/04/1943Rabaul-04/05/1943Rabaul=Lae(Supply39t;Rescued31men);
06/05/1943Rabaul-10/05/1943Rabaul=Lae(Supply39t);
m/05/1943Rabaul-20/05/1943Yokosuka=Transit;(Repairs);
[Lt.Cdr.Otsuka Tadasu] [56]
04/08/1943Yokosuka-10/08/1943Truk=Transit;
19/08/1943Truk-03/09/1943Sunk=EspiritoSanto,New Hebrides;+

Sorties=18

[Cdr.Yamada Takashi] [49]
30/05/1942dam.Br.BB.Ramillis;29150t;DiegoSuarez;M'sub;12*17'S;49*16'E;
30/05/1942sunk.Br.MS.BritishLoyalty;6993t;DiegoSuarez;M'sub;12*17'S;49*16'E;
05/06/1942sunk.Pa.MS.Johnstown;5086t;MozambiqueChannel;13*12'S;42*06'E;
08/06/1942sunk.Gr.MS.ChristosMarkettos;5209t;MozambiqueChannel;05*05'S;40*53'E;
11/06/1942sunk.Br.MS.Mahronda;7926t;MozambiqueChannel;14*37'S;40*58'E;
12/06/1942sunk.Pa.MS.HellenicTrader;2052t;MozambiqueChannel;14*40'S;40*53'E;
12/06/1942sunk.Br.MS.CliftonHall;5063t;MozambiqueChannel;16*25's;40*10'E;
30/06/1942sunk.No.MS.Goviken;4854t;MozambiqueChannel;13*25'S;41*53'E;
30/06/1942dam.Br.MS.SteauaRomana;5311t;MozambiqueChannel;09* 'S;42* 'E;
[Cdr.Yoshimura Iwao] [51]
07/11/1942dam.US.MS.Majaba;2227t;Guadalcanal;M'sub;
[Lt.Cdr.Otsuka Tadasu] [56]
31/08/1943dam.US.MS.W.S.Rheem;10872t;NewHebrides;15*51'S;167*02E;

M/S Sunk=07@037183t
M/S Damaged =03@018410t
W/S Sunk =0
W/S Damaged =01@029150t
Total Sunk =07@037183t
Total Damaged =04@047560t
Total =11@084743t

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