Technological Development
Innovative design technique for environment and safety
What is demanded in ship designing today?
First, the products we deliver must embody shipowner's concepts or needs.
In addition, special emphasis must be placed on the minimization of loads to the environment, maximization of fuel economy, and provision of a superior level of safety.
To address such challenges and gain high level of satisfaction from the shipowners and operators, the highly qualified designers of the Imabari Shipbuilding Group devote their energies to exploring advanced ship design capabilities and techniques everyday.
Aero-Citadel - brings to realization both energy efficiency and anti-piracy measures
<Energy efficiency >
The Aero-Citadel is a superstructure with slimly streamlined shape which combines ship's accommodation, engine room , and funnel casing.
Wind pressure during navigation will be reduced by 25-30% (as the result of the wind tunnel testing). In case of Cape size bulk carrier, it will enable a decrease of about 2% in fuel consumption.(*) New marine use LED lighting is also introduced to the accommodation and engine room lighting system, which reduces electric power consumption used for lighting by about 50%.
(* at normal output, about 9m/sec.(Beaufort 5) head wind)

<Safety & Security>

The slim, streamlined shape makes it easy to turn the bow of the ship toward windward during anchorage, and decrease the risk of anchor dragging.

All stairs are placed inside the superstructure as an anti-piracy measure, the entrance on lower level deck has thicker, reinforced steel doors. The accommodation windows are bulletproof, and water cannons are placed on the upper deck to prevent pirates entry into the accommodation.

There is a citadel facility which is refuge area in the superstructure that can accommodate all crewmembers for several days, protected by double-layer security doors. The facility is also equipped with communication devices usable even in case of blackout, ship maneuvering equipments such as stop main engine and steering gear, and is able to gather information of the ship’s data, including video picture and sound.

The accommodation design also includes features in accordance with the SOLAS MLC2006 requirements which will come into effect in near future, such as strengthened noise insulation and vibration counter measure. Improved living conditions for crewmembers are provided and the wheelhouse has widened backward view for safer navigation.

Imabari Shipbuilding proposes the next generation superstructure Aero-Citadel to be applied for possible type of vessel, paying special attention to energy efficiency and environment issue, and pursuing reinforced anti-piracy , improvement of safety and living condition of crew members.
External View WHEEL HOUSE
External View WHEEL HOUSE
NSafe®-Hull - minimizing the damage to the other vessel in the collision
A bulk carrier adopting NSafe®-Hull first in the world was launched on 2nd of August for Mitsui O.S.K. Lines, Ltd. NSafe®-Hull (a highly ductile steel plate for shipbuilding with improved collision safety) was developed by Nippon Steel & Sumitomo Metal Corporation (hereinafter “NSSMC”) and adopted through the collaborative R&D by NSSMS, Imabari Shipbuilding Co., Ltd. and the National Maritime Research Institute (hereinafter “NMRI”).

If a ship is made of NSafe®-Hull, because of superior ductility of the material, the energy absorbed before breaking hull could be roughly triple of one for a ship made of conventional steels, in case of side collision. It can therefore be said that NSafe®-Hull increases ship durability compared with conventional steels. Such higher safety level has been achieved by the cooperative research of the aforementioned three organizations on steel ductility and ship collision safety.
Ship side collision (schematic) Sectioned view of parts for which NSafe®-Hull was used (Parts in red)
Ship side collision (schematic) Sectioned view of parts for which NSafe®-Hull was used (Parts in red)
SCR System onboard - for more eco-friendly operation
According to Nox emission standards defined by IMO, from 2016 all the vessels need to follow Tier 3, which, when operating in ECA, requires reducing Nox emission of by 80%, compared with Tier 1, the current standard.

In order to comply with this regulation, since 2007 Ministry of Land, Infrastructure, Transport and Tourism has started a project to develop a more ecological engine. One of the projects was carried out by Japan Marine Equipment Association, with the financial support from the Nippon Foundation, and they are researching and developing "Super Clean Marine Diesel" since May 2007. Our company joined this project last year, and "IS NEXTER" MV MARITIME CENTURY ( 95,000 dwt) carrying a small sized high speed auxiliary engine was delivered.

During Sea Trial, this SCR system, which is being developed by Yanmar Co., Ltd, was proved to show an effective result.
Equipped with SCR
Equipped with SCR
Principle of SCR Schematic Diagram of SCR

Principle of SCR

Schematic Diagram of SCR
IBSS - to catch the operational information on time
Recently the number of maritime technicians is getting smaller and smaller. IBSS is developed with the goal of more efficient vessel's management, by obtaining operational information on time.

IBSS, a new communication system between the office and vessel, automatically collects the detailed information of the operation, navigation and loading/discharging, and it does not require any additional work on the side of crew. Moreover, such information is shown on the website, so it can be accessed anytime and can be utilized for the maintenance and management of the vessel 24hours a day 365days a year.
Schematic Diagram of IBSS
RFID Gate System
Together with Monohakobi Technology Institute, an affiliated company of NYK Line, we developed a new gate system. This system utilizes RFID (Radio Frequency Identification technology), and we have already applied it in our shipbuilding yard in Marugame and Saijo.

This new gate system is developed mainly for the safety management in the shipbuilding site, in order to grasp the number of the staff onboard, and where they are at the moment. It is based on the conventional gate system, but the vast expanse of the shipbuilding yard was further taken into consideration.

One of the major characteristics of this gate is that it does not require the switching operation, because it automatically read the IC tug installed in the worker's hardhat. So our workers can pass through the gate with, for example, large machineries or tools carried, and the direction, in which he is heading, is automatically recognized by the infrared sensor.

Also, the communication line between the each gates are composed of wireless local area network, so the gate can be easily moved to the different place according to the construction schedule and the type of the vessel, only if the electric power can be supplied.

Currently this gate system is applied only at the gate to go in and out to the ship at the fitting out basin, but in the future this system will be utilized to grasp the position of the worker in the broader area, like the whole shipbuilding yard. Additionally, we are seeking for the possibility of utilizing it in the area of human resource management, by calculating the working hour of each workers.
IC tag is quipped with Helmete RFID Gate System
IC tag is quipped with Helmete RFID Gate System
Imabari's Ships
Technological Development
Bulk Carriers
Container Carriers
Wood Chip Carriers
Special Cargo Carriers
Car Ferries
Pure Car Carries