Previous studies have shown that fish sorting is the most time-consuming task in coastal trawl
fishing, and that the task is often performed in harmful work postures. Thus, the process of sorting fish
in this fishery should be improved. In this study, a workbench to improve posture during fish sorting was
tested on a small trawler operating from a local fishing port in Aichi Prefecture. The posture of the
fishermen's upper body improved, from stooped to upright, and the proportion of suitable postures
increased from 5–8% to 82–96%. No obvious changes were observed in the efficiency of fish sorting when
using the workbench. These results demonstrate that introducing a workbench into conventional fish
sorting is a valid way to improve the environment for coastal trawl fishery workers.
A fishery simulator is developed for a bottom otter trawling in Ise Bay, which consists of fish
behavioural models for major two species and a fishing operation model. The fish behavioural models
simulate resource conditions for two major target species, conger eel and mantis shrimp, considering the
fish migration as well as the growth and the population change. The fishing operation model predicts the
behaviour of trawling boats based on economic conditions and resource distribution to calculate the fish
catch amount by each boat. The developed simulator well reproduced annual variations of CPUE （catch
per unit effort） for conger eel and mantis shrimp. It was indicated that precise environmental conditions
should be used to predict behaviour of boats accurately. The simulator was also applied to assess the
effects of variables within fishery management such as the control of mesh size for trawling nets, the
release of small fish, and introduction of facility to keep caught fish alive. The mesh size of trawl net
which maximize the fish catch will be different for each fish species. To release larger fish will be
effective only for conger eel because of the high mortality rate of released mantis shrimp. The
introduction of an on-deck shower device for caught fish will be cost effective as well as easy to reach
We collected and examined the data of artificial reefs （ARs） that Korea and Japan have developed.
ARs projects in Korea have practically started in 1971 under the governmental supervision. As a result,
fish catch and income for fishermen appeared to be fairly improved. Recently, however, seaweed reefs
are often being installed in shallow coastal areas to create sea afforestation as one of countermeasures of
Isoyake. On the other hand, in Japan ARs have been developed and utilized in the earlier times than in
Korea. However, ARs installation has just become a national project since 1951. In particular, recently
ARs projects have been integrated to be fisheries-based maintenance projects so that Japan could
establish a consistent management system for fisheries. On the other hand, ARs used in Korea and Japan
did not indicate a big difference in their shape, size, material and weight for a single unit of reef, but they
revealed a significant difference in the classification of ARs. In addition, the requirements for ARs were
nearly equivalent with each other in their physical, ecological, and economic functions. However, it is
essential to secure substantial evidence to evaluate the functions of ARs, such as economic efficiency,
safety and stability.
Training ships of Fisheries College were established to train ship's officers. These were based on
the law on University establishment standards. Recent marine science diversifies, and the purpose of a
training ship can't be called only the purpose which trains a sailor. For example, recent fishery is
required not only to capture but also scientifically analyze and manage resources efficiently. Furthermore,
the facilities which can deal with a marine environmental problem are necessary. The new practice ship
needs the latest research equipment and a structure that can use them effectively.
Kagoshima University training ship Kagoshima-Maru is based on the 'Basic Act on Ocean Policy'
which came into effect in 2007 and was built by aggregating the requirements of the latest equipment
and hull structure. In this paper, the concept of Kagoshima-Maru construction and the problems which
became obvious later are described.
Training vessel, SHINYO MARU of the Tokyo University of Marine Science and Technology was
built in March, 2016. She is the training vessel which put emphasis on fisheries science, oceanographic
survey and navigation officer education. This paper described the outline of SHINYO MARU and her
The research and training vessel SHINYO-MARU Ⅳ was constructed in 2016 for the development of
the fishing techniques as well as the training of fishery navigation. For this purpose, the steering quality
was well designed by means of equipping her with twin controllable pitch propellers （CPP）, large size
rudders（ Sheering rudder）, Anti-rolling tank, and bow thruster.
In order to clarity the maneuvering performance full-scale trial was carried out using by GPS
system, where sufficient maneuverability was confirmed. Then, these characteristics were numerically
simulated based on IMO regulations of maneuverings. It was found that the results are in good
agreement with the results of the full scale trial better than SHINYO-MARU Ⅲ .
Carry out a training item in training efficiently functionally and safely within a limited period. It is
important that I let you be interested in the ocean and a ship through training. I took the livability of the
person of embarkation, improvement of the convenience, the reduction of the workload of the crew into
consideration and examined this building and designed it. In this report, I report a frequent section used
in embarkation training.
Training vessel of Tokyo University of Marine Science and Technology, SHINYO MARU was
completed at 31 March, 2016. The electric driven propulsion system in the vessel was equipped in order
to reduce underwater radiation noise from the vessel. These consist of two propulsion systems which is
composed of the controllable pitch propeller, the propeller shaft, the reduction gear and the electric
propulsion motor. This paper described the outline of the propulsion system and their control system, the
electric power system and their control system.
A wide variety of hydroacoustic instruments from conventional standard models to state-of-the-art
models was equipped on the new training vessel Shinyo Maru （over all length 64.55 m, domestic gross
tonnage 986 tons） of Tokyo University of Marine Science and Technology. These instruments were
equipped for use in navigation, fishing, fisheries resources surveys, surveys for biological and physical
oceanography, seafloor and sub-bottom exploration, and their education. In this paper, the operating
principles and applications of these hydroacoustic instrument are explained. Particularly, in terms of the
hydroacoustic instruments used in the field of fisheries acoustics, this paper introduces their research
trends. Additionally, useful information on the installation of the hydroacoustic instruments for training
and research vessels are presented.
Shinyo Maru Ⅳ as a training ship is assigned to produce officers with special skills to contribute to
fisheries-related industries and marine-resource exploration/utilization. To fulfill this mission, she
possesses a variety of instruments and facilities to execute oceanographic observations in a contemporary
manner. There is a CTD system, capable of obtaining depth-distributions of temperature and salinity
with world-standard quality, which can be rigged with optional sensors to measure some acoustic, optical
and biological properties. This CTD system can be sent down to the deep, through a winch with armored
cable of 8 mm in diameter and 7,000 m in length. LARS（ launch and recovery system） helps the handling
smooth and safe. There also are various kinds of plankton and micro-nekton sampling apparatuses for
biological oceanography. For sea-bottom measurements, instruments such as airgun and streamer,
autonomous underwater vehicle, remotely operated vehicle can be operated. A 'wet' lab and a 'dry' lab,
having decent space separated by a door, are useful for biological/chemical analyses and operations
utilizing electronic devices, respectively. All these contemporary equipment will sure be of educational
use; moreover, oceanographic observations acquired in the course of education should be invaluable for
the progress of ocean sciences.