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

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%. (※)

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.

(※) (* at normal output, about 9m/sec.(Beaufort 5) head wind)

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.

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.