Parametric Study for Comfort considerations of near shore Floating Platforms Under Various Station-Keeping Conditions

Anis Hussain, Keppel Marine & Deepwater Technology (KMDTech)
Aziz Merchant, Keppel Marine & Deepwater Technology (KMDTech)
Pasumarthy Murthy, Keppel Marine & Deepwater Technology (KMDTech)
Wang Wenping, Keppel Marine & Deepwater Technology (KMDTech)

Floating Offshore Structures deployed nearshore has potential to overcome land scarcity and mitigate sea-level rise due to Global Warming. Designers worldwide are focusing their attention on this sector with different degrees of suceess. Our aim is to design modularised Floating platforms of fixed shape and size such that each unit could be individually moored or joined together in various configurations to form large floating platofrm groups and create desired architectual impressions. This can be located along the coast line of any modern city for multi-purpose usage.

One of the key factors gorvening design of Floating Platform for residential purpose is the level of human comfort on the Platform. Comfort level based on the maximum acceleration level for Platforms are based on the Class notations requested for such structures and are less stringent than those designed for highrise landbased fixed structures which typically need to comply with level of 0.1 m/s2 whereas an Offshore Platform complying with habitability notation of a leading Classification Society would be 0.178 m/s2.

Our objective in this paper is to present parametric design study to illustrate platfom comfort levels under Singpaore nearshore environmental conditions. Through multibody hydrodynamic analysis, the maximum platform acceleration levels are calculated based on Station-keeping options such as taut morring, dolphine stoppers etc. Parameteric study for Platform sizes together with building sizes on a varying sizes of Platforms are also considered. It is believed that this type of study would lead to better guidelines of design matrix on residential usage of Floating Platforms for specific nearshore locations.

Paper will also address different types of Station-keeping options available for nearshore application. Pros and Cons of Station-keeping options in terms of load capability, maintenance requirements, comparative construction cost as well as seafloor loadbearing capacity and environmental will also be given due consideration.

Keywords – Floating Platforms, Station-Keeping, Parametric Study, Human Comfort, Near Shore

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Anis Hussain has over 35 years of experience in Offshore and Marine Industry. He is with Keppel Fels since 1989 and currently serving at Keppel Marine & Deepwater Technology. Anis has been involved in development of Floating Offshore Structures such as Drillships, Semisubmersibles for Drilling, Accommodation and Tendering purposes and Specialised Ships such as LNG Bunkering Vessels, Multipurpose Ice Class Ships etc. From 2012 to 2018, he served as Project Director at the Deepwater division of Keppel Offshore and Marine Technology Centre (KOMtech) engaged in Research and Development of Deepwater systems. Anis is co-Principal Investigator in Keppel-NUS Research Laboratory and holds a position of Adjunct Associate Professor at National University of Singapore. Anis has several Patents and Publications in International Conferences. Anis obtained his Bachelor’s degree in Naval Architecture from Indian Institute of Technology, Kharagpur, India and his Master of Science in Computer Integrated Manufacturing from Nanyang Technological University, Singapore.

Parametric model for generation and analysis of modular, freeform floating island networks, constructed using flexibly formed Buoycrete

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