Developing next-generation ships that are more efficient, capable, and environmentally friendly
Contra-Rotating Propeller(CRP)
More Efficient Propulsion Achieved
A contra-rotating propeller is an energy-saving device whereby two tandem propellers, rotate in opposite directions. With this technology, rotational energy loss of the fore propeller is recovered by the aft propeller, changing it into propulsive power, thereby improving the propulsive performance. This is currently used in VLCC and domestic electric propulsion ships, and is gaining attention as an energy-efficient and environment-friendly technology.
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IHI-SPB tank
IHI-SPB method tank
Higher safety achieved under oscillations from wave motions
IHI has uniquely developed self-supporting prismatic shape liquefied gas containment tanks called SPB, meeting the requirements as type B cargo tanks of IGC Code, an international code for liquefied gas carriers of the International Maritime Organization (IMO), as well as associated technology of LNG carriers equipped with those SPB tanks, and completed such development in 1985.
IHI-SPB type tanks feature in having its design based on precise strength analysis and fatigue and fracture analyses, and thoroughly developed workmanship accuracy and welding quality assurance system to achieve extremely high structural reliability and safety.
Using the benefits of self-supporting prismatic tank configuration, the usage of SPB tanks were extended from LPG/LNG carriers to LPG FPSO, to complete the SANHA LPG FPSO in November 2004. Currently, development projects are being planned in various parts of the world using LNG FPSOs and IHIMU is actively pursuing these projects to win orders.
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Super Slendar Twin Hull
High Speed Ship Model Suited for Large Ships
The super slender twin hull (SSTH) is a high speed ship type suited to relatively large ships, like ferries and Ro-Ro ships. IHI Marine United has independently developed this technology for the purpose of modal shift (a shift from land to ocean transportation modes).
Energy-saving and Environmentally-friendly Ship
eFuture 13000C(Conceptual Design)
Both Environmental Impact and Fuel Consumption Reduced by 30%
We have developed a revolutionary ship reducing both environmental impact and fuel consumption by 30% compared with conventional ships. The eFuture 13000C low environmental-impact container ship features greatly improved propulsive performance and a more efficient plant system throgh such innovations as the adoption of a newly developed twin-skeg (two-keel) hull, and some energy saving devices. Besides high-capacity batteries that store natural energy collected from solar panels, we introduce new innvations.
eFuture310T(Conceptual Design)
eFuture 56B(Conceptual Design)
The eFuture 310T low environmental-impact tanker and the eFuture 56B low environmental-impact bulk carrier have also greatly improved propulsive performance through the use of an updated contra-rotating propeller with two propellers on one axle, and some energy saving devices. Other innovations providing the required functionality of low-speed ships include a whaleback bow that reduces resistance from waves and wind pressure and waste heat recovery system from the main engine.
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IHIMU-CEPS
"IHIMU-CEPS" contributes to reduction of environmental load
CRP (Contra-Rotating Propeller) recovers rotational energy loss of forward propeller by aft propeller and improve the efficiency of the vessel.
"IHIMU-CEPS" (CEPS:CRP Electric Propulism System) which integrates the diesel electric propulsion system and the latest hull form with CRP contributes to reduction of the environmental load.
Plug-in Electric Propulsion Vessel (IHIMU-ZEEPS)
IHIMU makes its move towards realization of the "zero-emission" ship
IHIMU developed the design concept "IHIMU-ZEEPS (IHIMU Zero Emission Electric Propulsion Ship)" on the state-of-the-art electric propulsion inland and short range ferry, with its power fed from batteries.
Now, IHIMU have extended its activities towards realization of zero-emission in shipping, by collaborating with a certain battery company having superior technologies for use in modern automobiles. Our efforts are being continued to investigate application of a huge capacity battery system for marine use and practicable control method for the ZEEPS, in close coordination with our government, relevant authorities and societies, in order to establish safety rules and regulations.
Various Model Test Facilities and CFD
Powerful Tools for Hydrodynamics Design
Model test facilities and CFD (Computational Fluid Dynamics) analyses are powerful design tools to optimize the hydrodynamics performance of ship and marine structures. Model test facilities consist of towing tank, sea-keeping and maneuvering tank, and cavitation tunnel. New technology, PIV(Particle Image Velocimetry) system installed in towing tank can visualize the detailed flow field around ship. Also,CFD can estimate the detailed hydrodynamic property of the ship, propeller and energy saving devices with good accuracy. Both of them play an important role in hydrodynamics design.
Towing Tank
PIV system in towing tank
CFD(Energy Saving Device)
Hull Form Optimization for Container Ship
Hull Form Improvement Based on CFD and Experimental Analysis
High speed vessels like container ship and car ferry benefits greatly from reduced wave-making resistance, while maintaining high transportation efficiency. Bow shape of container ship is optimized based on CFD calculation and wave pattern analysis.
Improved Bow
Original Bow
Structural Safety Simulation
Analysis of distribution of stresses from waves on container ships
Optimal Design through Advanced Structural Analysis System
Ensuring structural safety requires technologies to reasonably estimate loads on the ship hull, calculate the response accurately, and evaluate strength appropriately.
IHI Marine United creates optimal structural designs while confirming stress levels using an advanced structural analysis system developed over many years.
Strength Analysis of Marine Structure
Ensuring Reliability and Safety through High Precision Structural Analysis Technologies
When designing the Sanha LPG FPSO, we ensured that the marine structure as a whole had high reliability and safety by applying the high-precision structural analysis technologies that we developed through our SPB tank design to the design of the hull structure and upper-deck processing plant structures.
Vessel design with the three-dimensional CAD system (Ajisai)
Improvement of design and production efficiency
The Ajisai system creates a product model (completed image) on the computer screen. The stereoscopic completed image enables accurate estimation of the quantity of materials necessary for manufacture. In addition, the system makes it possible to design easy-to-make and easy-to-use products.
Fully automated Steel Plate Bending System for Ship Building
Automating Master Craftsmanship
This system automates the processing of bending external plates into complex three-dimensional shapes by means of linear heating technology using high-frequency heating. We created this leading-edge system by analyzing the techniques of master craftsmen, and combining the latest robotic, sensor, and analysis technologies to convert "skill" into "technology." We now offer this unique system, available only from IHI Marine United, to external users.
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