Japan Ship Technology Research Association
Emergency Towing Procedures
The Standard Photos for Preparation of Steel Substrates

Strategic R&D for ship technologies

JSTRA is engaged in strategic R&D to reinforce the competitiveness of the domestic shipbuilding and marine transportation industries and technical basis in the international arena. At the same time, it addresses technical challenges for the domestic industries in terms of logistical efficiency, safety assurance and environmental preservation.

Main R&D projects, etc. of this year

R&D of the practical method of Laser-Arc Hybrid Welding for Thick Plates

JSTRA has developed a device for integrating weld seam tracking technology for welding and laser-arc hybrid welding technology to complete hybrid welding. This device allows automatic detection of different gaps and weld seams. By using this device, JSTRA is conducting comprehensive verification experiments into one-side full-penetration welding of T-joints and butt welding to a length of up to 5 m).

Development of cargo loading / unloading system for liquefied hydrogen and the relevant rules for operation

To address large demands for hydrogen in future, it is important to establish a series of hydrogen supply chains to make it possible to manufacture hydrogen overseas from Inexpensive brown coal or regenerative energies, and liquefy and transport it to Japan. JSTRA is engaged in the development of a liquefied hydrogen loading system and the establishment of rules for loading that constitutes a part of this supply chain.

Studies on realization of visualization system in shipyards

To accelerate sophistication of production management through ICT in the shipbuilding industry of Japan, JSTRA has established a Cloud service system that can use the "Visualization System In shipyard" developed In FY2015 and FY2016 on a trial basis. At the same time, an examination is in progress to show the effects of the system in process analysis and improve it by installing the system in the manufacturing process of the shipyard. JSTRA also researches the possibility of enhancing position accuracy and Automatic Gantt chart creation in the current system.

Studies on applicability of loT and Al in production / design processes

While expectations for the introduction of loT and Artificial Intelligence (Al) in manufacturing industry are rising drastically. their applicability to shipbuilding Is still unclear. Further. there are many challenges associated with the practical introduction of these technologies, including the construction of a learning database. Therefore, JSTRA studies the latest development trends of loT and Al technologies and performs case studies on their introduction to production processes for the purpose of determining their potential for innovation in production and design processes of domestic shipbuilding In Japan.

Studies on the application of 3D printing technology in the fields of shipbuilding and maritime equipment

The 3D printing technology is currently attracting much attention with regard to manufacturing in the future. Supported by expectations for positive use of 3D printing technology in developing / designing innovative ship models, JSTRA is currently conducting a feasibility study to determine the applicability of this technology to the manufacturing of model ship for Tank Test.

Studies on innovative ship technology for the future

To examine R&D subjects that Japan needs to address, JSTRA will compile a strategic R&D road map to show the orientation of innovative future ship technologies (Including shipbuilding technology and offshore development-related technologies), such as autonomous ships, based on various study results accumulated so far in the fields of shipbuilding and maritime technologies.

Basic studies on developments in new marine frontier

Based on the results of technology trend studies in the past, such as the exploration of marine oil / gas in offshore, deep water, and polar areas, as well as studies on seabed resources near Japan and the active use of ocean energies, JSTRA conducts workshops to find seed subjects for future Joint studies on ocean development technologies In the shipbuilding industry in an effort to indicate potential and a direction for ocean development technologies to be engaged by shipbuilding in our country.

Project to address Ship Recycling Treaty

To precisely respond to the domestic and international trends geared for ratification of the Ship Recycling Treaty, educational activities targeted for coastal shipping operators and shipbuilders in Japan will continue. In addition, JSTRA is working to gain a full understanding of the trends and details involved in these domestic laws and regulations, make coastal shipping operators and shipbuilders aware of them at an early stage, and reflect them back onto its inventory preparing service at the appropriate time. We are also involved In learning activities with regard to inventories for Japanese fishing vessels that visit ports within EU nations, and that consequently come under the jurisdiction of laws that apply in the European Union and are liable for holding Inventories, as well as providing support for inventory preparation.


Research studies and Incubation projects are conducted giving consideration to the current industrial needs of the maritime technology and marine development fields, in addition to those mentioned above.

Traffic path of works and workers analyzed by shipyard visualization system

Development of liquefied hydrogen loading / unloading
system (The picture shows the system for LNG)
Development of seam tracking technology for welding Smart future Vessel

Main R&D projects completed in FY2016

Development of Power Assist Suit for shipbuilding (Supported by The Nippon Foundation)

In a joint effort with shipbuilders and others, JSTRA engaged in the development of " assist suits for work requiring operators to face upwards" (welding, grinding, etc.). JSTRA developed the following two types: Compact type - Supports upper arm by simple mechanism without electric power. Which has advantages of compact size, low cost, and easy use. Functional type - Supports upper arm by electro-magnetic brake. Which has advantages of function to respond to diverse arm movements.

Practical realization of visualization system in shipyard (Supported by the Nippon Foundation)

A monitoring system that makes it possible to automatically identify and record the working processes in a shipyard, has been developed to enhance productivity by eliminating unreasonableness, waste, and inconsistency. JSTRA has established a practical monitoring system (that is visualization system In shipyard) by using video images, and also data from WI-Fi wavelength strength, GPS, acceleration sensors and RFID, and so forth.

Studies on FPD at Laser-Arc Hybrid Welding

A joint study with ClassNK, Kyushu University and shipbuilders and others is underway to establish a toughness evaluation method (including judgment criteria) for the Charpy impact test using test piece with side-groove for joints using Laser-Arc Hybrid Welding. The team has successfully determined the welding conditions of butt welding joints for thick plates (17 mm) and a method of evaluating the toughness of a Laser-Arc Hybrid weld has been established based on the Charpy impact test. This result was reflected in the Laser-Arc Hybrid Welding Guideline (Ver.3) published in September 2016.

Studies on anti-corrosion technology for ballast tank

We were engaged in studies to develop a simulator to predict the progress of local corrosion / paint degradation of the ballast tank as a consigned study from the steel industry. Upon validation based on coating degradation and corrosion progress data in ships with aging-related degradation, it is possible to evaluate the effect of elongation in coating life and the reduction of abrasion associated with corrosion by using anti-corrosion steel, based on future IACS evaluation standards.

Studies on sophistication of structural design technology for high-speed vessels

We were engaged in studies to review and expand the application scope for the "high-speed vessel structural standard" currently applicable to high-speed vessels (based on the Maritime Bureau Ordinance of 1996), so that the standard should be applicable to vessels longer than 50 m (up to 100 m), and we proposed a standard formula for this purpose. Further, we redefined the positioning of RR744 "high-speed vessel structural design guideline (draft)" proposed in 1993, with the purpose of making structural designs based on direct calculations possible regardless of the ship length.