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ÂÒÂ×Ðã Maritime Engineering research on improved ship safety, stability and performance, resulted in the US Navy building a fleet of 13 Independence Class ships, and shipbuilders using greener designs.

Good ship design is important to ensure ships are safe, comfortable, economic, and sustainable. ÂÒÂ×Ðã Maritime Engineering research focuses on improved ship engineering for defence, commercial, and complex ship designs.

A ÂÒÂ×Ðã team has developed new design concepts for complex ships, built and implemented computer models for better ship design, and reduced waste emissions from the shipping industry.Ìý

The team revolutionised trimaran designs for commercial and naval shipping, developing computer models to predict performance from hydrodynamic and structural perspectives. They worked with the Atlantic Center for the Innovative Design and Control of Ships (ACCeSS), and the Naval Surface Warfare Center (NSWC) to design and test better multi-hulled vessels.ÌýÌý

They demonstrated the value of using the multihull design, with its high-speed characteristics and large deck areas for carrying cargo and equipment, for ferries and naval vessels. They showed up to a 70% improvement on performance compared to monohulls, leading to the US Navy commissioning a fleet of 13 Independence Class trimarans of Littoral Combat Ships (LCS).Ìý

Developing ship designÌýÌý

The ÂÒÂ×Ðã team flipped the design process from an "outside-in" hull form focus to an "inside-out" architectural approach, with a balance between weight, space, and stability. The new Design Building Block approach (DBB) uses the internal and upper deck architectural demands, bringing critical operational and human considerations to the fore, providing a stronger basis for cost and production.ÌýÌý

The DBB approach has been used to develop ship designs for organisations and companies including the UK Ministry of Defence, BMT Ship Design, the UK Shipbuilders & Ship repairers Association, the Canadian Defence Department, the US Navy Office of Naval Research and the Columbian Navy.Ìý

Improving the safety of offshore systemsÌý

The team also focused on the safety aspects of offshore systems design and risk assessment. They worked with large manufacturers such as Daewoo to improve the design of floating production storage and offloading vessels (FPSOs). Working with ferry builder Incat, they informed changes in the bow shape of Incat vessels to reduce the wave loads and improve passenger comfort.Ìý

Contributing to a greener environmentÌý

Through collaborations with key stakeholders, ÂÒÂ×Ðã research has helped reduce the environmental impact of the shipping industry by providing tools that support theÌýdevelopment of low carbon technology and better waste recovery.ÌýÌý

The improved computational models for ship designs, technology developments, and low carbon technology were amalgamated into GloTraM – ÂÒÂ×Ðã Energy Institute’s (ÂÒÂ×Ðã-EI) techno-social-economic model of the global shipping industry. GloTraM influenced the shipping industry through changes in transport demand, macroeconomics (such as fuel, carbon price, and newbuild price inflation), and the availability of technology and regulation.ÌýÌý

Professor Giles Thomas (ÂÒÂ×Ðã Department of Mechanical Engineering) said: "Global shipping currently accounts for approximately 3% of the world’s total greenhouse gas emissions. The ÂÒÂ×Ðã team has helped reduce the environmental impact of the shipping industry by developing technical models of ship performance."

Links

• ÂÒÂ×Ðã Department of Mechanical EngineeringÌý
• ÂÒÂ×Ðã Faculty of EngineeringÌý
• ÂÒÂ×Ðã Faculty of EngineeringÌýREF 21

ImageÌý

• Image credit: iStockÌý