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Greeting from the President

As a main player of Kyokuyo company group

Kyokuyo Suisan was established by mother company Kyokuyo in 1997 and engage Tuna purse seine fishing business by five(5) fishing vessels, Sashimi grade tuna processing business, and ULT(Ultra Low Temperature) grade cold storage business.
In 2016,we also started to run the Souemon plant that has the latest facilities for producing tuna.
In addition, with the aim to introduce HACCP,we are striving to produce the safety products in the hygienic environment.

I seek your cooperation and assistance since, we Kyokuyo Suisan always try our best to improve our business operation as a main player of Kyokuyo Group.

Mr Ikuo MurataniMr Ikuo Muratani


Company title Kyokuyo Suisan Co., Ltd.
Establish March 12, 1997
Initial capital 192 million JP yen
President Hiroyuki Aoki
Employee 120-office staff, 129-crew member
Annual sales 6.9 billion JP yen
Business field 1. Tuna Purse seine fishing
We operate five(5) tuna purse seiners, Wakaba Maru No.3, Wakaba Maru No.5,
Wakaba Maru No.6, Wakaba Maru No.7 and Wakaba Maru No.8

2. Sashimi grade tuna processing
We mainly produce sashimi grade tuna loin by using whole round frozen tuna.
Such products are distributed in sushi restaurant and supermarket in Japan.

3. ULT cold storage
Our ULT grade cold storage is designed to keep sashimi grade tuna products and its raw material as high quality, its capacity is 8,000mt with negative -55 centigrade.

4. Minced tuna processing
Weproduce minced tuna at the Souemon plant
Address Head Office and Oigawa Plant
1441-1,Habuchi Yaizu Shizuoka, Japan
Zip code:421-0213

Souemon Plant
1190,Souemon Yaizu Shizuoka, Japan
Zip code:425-0065
Phone & Fax General Affairs Dept. +81-54-622-5111, Fax 5115
Fisheries Dept.  +81-54-622-5112, Fax 5116
Tuna processing & Cold storage Dept. +81-54-622-5113, Fax 5117
Souemon Plant +81-54-624-3300, Fax 3306
Mother company Kyokuyo Co., Ltd. http://www.kyokuyo.co.jp/
Subsidiary company Kiribati and Kyokuyo Co., Ltd (KKC) location: Bairiki, Republic of Kiribati
Souemon Plant



President : Hiroyuki Aoki
Director : Yasunori Shimoichi
     Akihiro Kawaguchi
     Ken Sakai (Part-time Director)
     Hideo Doi (Part-time Director)
     Yasuo Kawai (Part-time Director)
     Taro Kawamoto (Part-time Director)

Corporate Auditor :
     Shuichi Kiyama(Part-time Auditor)

Number of employees

Office staff : 120 persons
Crew member : 129 persons
Sum total : 249 persons(As of July 1, 2017)

Tuna Purse seine fishing Dept.

We operate five(5) Tuna purse seine fishing vessels in particular Wakaba Maru No.3, Wakaba Maru No.5, Wakaba Maru No.6, Wakaba Maru No.7 and Wakaba Maru No.8. We mainly fish in Tropical area of Western Central Pacific Ocean (WCPO) such as EEZ of Papua New Guinea, Federated States of Micronesia, Kiribati, Nauru, Solomon Is., Republic of Marshall Is. and Palau in year around. Our catches are mainly unloaded in Japanese tuna market such as Yaizu(Shizuoka pref.), Makurazaki(Kagoshima pref.) and Yamagawa(Kagoshima pref.). In addition, Wakaba Maru No.5 and No.6 operate in Japan near coastal area so-called KINKAI fishing ground from mid of June to end of August in order to harvest sashimi grade oily skipjack tuna. Most of such catches are unloaded in Ishinomaki port.

Total our catches in recent years is recorded as 28,000mt per year.

Our fleets

Our purse seine
fleets are shown in bellow;











Name of vessel Tonnage International Tonnage Year launch
WAKABA MARU No.3 349 1,096 1989
WAKABA MARU No.5 383 1,183 2003
WAKABA MARU No.6 349 1,096 1992
WAKABA MARU No.7 760 1,788 2009
WAKABA MARU No.8 349 1,094 1990

Kiribati and kyokuyo Co.,Ltd

KKC was established by Kyokuyo Suisan (51%) and the government of Kiribati(49%) with initial capital AUD100,000.00 in July 8, 2011. Kyokuyo Suisan appointed three(3) directors and Kiribati government appointed the other three(3) directors and forming a board of directors headed by president Mr. Ikuo Muratani who was the president of Kyokuyo Suisan.

KKC charters Wakaba Maru No.3 owned by Kyokuyo Suisan and engage tuna purse seine fishing business. We aim to attain sustainable use of tuna resources in WCPO and contribute economic development in Kiribati by forming this Joint venture.

Photo (right) : KKC Opening ceremony held in Betio Kiribati in Sept. 21, 2011.

A new challenge to mitigate bycatch of bigeye tuna by using Wakaba Maru No.3

Main target species of Tuna purse seine fishing vessel are Skipjack tuna (Katsuwonus pelamis) and Yellowfin tuna(Thunnus albacares), however they also catch bigeye tuna (Thunnus obesus) as bycatch which is considered as overfishing status. Thanks for the financial assistance of fisheries Agency of Japan, Kyokuyo Suisan engaged a new challenge to mitigate bycatch of bigeye tuna by using Wakaba Maru No.3 in order to attain environmental friendly fishing. Abstract of the study paper is show in bellow;

Abstract of the paper

In this paper, a research to mitigate bigeye tuna fishing mortality by using two separate FADs with underwater light stimulus (herein after referred to Double-FADs) was described. This purpose of this paper is to verify effects of decreasing bigeye tuna catch of Double-FADs as compared with common FADs (herein after referred to Normal-FADs). The total number of operation was forty eight (48) including 6-Double-FADs, 8-Normal-FADs and 34-Free school operations, which were conducted by a commercial vessel “Wakaba-Maru No.3” in November and December 2011 in exclusive economic zone of Papua New Guinea and Solomon Islands by using the assistance fund of the Fisheries Agency of Japan. Based on the onboard sampling data, the size proportion of Double-FADs is bigger than that of Normal-FADs in all species including skipjack, yellowfin and bigeye if we count number of fish which weight is bigger than 3.0kg on Normal-FADs compared with Double-FADs. The bycatch rate of bigeye tuna to total number with Double-FADs and Normal-FADs was 6.1% and 8.9% in number, and 7.2% and 14.2% in weight respectively. The number of bigeye tuna in catch of one (1) metric ton is estimated as 24 in Double-FADs and 45 in Normal-FADs. Although sample size and quality is not enough to reach conclusion and to apply appropriate statistical test, these results support that Double-FADs have some effect on reducing bigeye tuna bycatch as compared with Normal-FADs.