... adaptable to water depth, however, suffers larger seakeeping motions in waves. In order to improve the seakeeping performance of the barge foundation for offshore wind turbines, the present work proposes a concept of Air-cushion Supported Floating Platform (ASFP), and integrates the air cushion into barge...

... ABSTRACT The vortex-induced motions (VIM) of semi-submersibles depends on the shape of the submerged structure, small changes in column geometries may have a significant impact on the VIM response of the platform. The study on the effect of column rounded ratios on the VIM of semi-submersible...

... platform motion, mooring line tensions and tower base moment is evaluated in this study. It turns out that the V-shaped semisubmersible offshore wind turbine is a promising concept that provides a good practice for the application of wind energy in deep water in the future. INTRODUCTION Currently, due...

... Transfer Function time domain Spectral Fatigue Design platform Abstract Offshore platforms during their pre-service and in-service stages are under cumulative damages due to repeated application of time-varying stresses known as fatigue damages. Ocean wave loads usually have the highest...

... Abstract Numerical simulations of a conventional tension leg platform (TLP) were generated to investigate its response to wave-in-deck-loads under extreme wave conditions. The model was setup as a fixed body and as a floating body connected to a fixed boundary by flexible mooring cables...

... Abstract Many offshore platforms have been developed in the offshore fields in Indonesia since 1969. National authorities in Indonesia stated that the existing platforms required the performance of underwater inspection on a regular basis. However, underwater inspections are very costly. Hence...

... Abstract Motivated by the development of new offshore platforms, a semi-analytical approach is proposed to solve the scattering of free surface waves around a two-dimensional platform supported by a pile array. The macroscale scattering is predicted based on microscale dynamics between piles...

... Abstract In the study, the results of a statistical modeling of global ice loads from drifting ice features on the "Molikpaq" (PA-A) ice-class platform for "Sakhalin-II" Project are investigated. The authors made a comparative analysis of ice loads on wide structure in the ice conditions...

... Abstract This paper presents a numerical study on motion characteristics of a Tension Leg Platform (TLP) in waves. Time-domain simulation using convolution integral is applied to investigate the wave-induced motion response of the TLP. Hydrodynamic coefficients and wave forces are calculated...

... Abstract This paper focus on the global structure strength analysis of a Tension Leg Platform (TLP) based on the design wave approach, the global structural analysis of the Tension Leg Platform is to ensure the hull global structural integrity under design environmental conditions...

... Abstract Hydrodynamic analysis of a moored semi-submersible type offshore wind platform has been carried out. Three methods are used in this study. The first method is the wave tank experiment with a 1/50 scale model which is carried out in the towing tank of RIAM, Kyushu University. Wind...

...-trapping phenomenon. INTRODUCTION An arrangement of four truncated cylinders centered at the corners of a square is a simple model of a typical TLP platform. The prediction of the run up on the cylinders is of great interest for the offshore industry, e.g. to determine the height of the platform deck...

... OC3- Hywind and variations of mooring system of spar platform, barge and semi-submersibles. Recently ‘Windfloat’ is emerging, which is based on semi-submersible design concept with high damping plate(Roddier et al., 2010). subsea system intl offshore floater wind turbine hong hydrodynamic...

... ABSTRACT: In this paper, the focused wave and current interaction with a moored JIP Spar platform are investigated using a time-domain higher order boundary element method (THOBEM). Embodied by a linear superposition of finite cosine waves, the focused wave can be efficiently simulated through...

... ABSTRACT: This paper presents a comprehensive study on the hydrodynamic performance of a new dry tree semisubmersible concept, Deepwater Tumbler Platform (DTP). The DTP concept is developed to suit the environmental conditions of South China Sea (SCS) and to tackle the challenges in deepwater...

... ABSTRACT : A box-type floating structure is considered for a candidate of floating wind turbine structures. The platform is consisted of a box structure and large damping plates for enhancing global performance characteristics. Numerical analysis is conducted by using higher-order boundary...

... of the Sea of Okhotsk according to the standards, procedures and guidelines from various codes of design. And also the probabilistic model of ice loads, developed by the authors in the previous studies, was considered for comparative analysis. KEYWORDS: offshore gravity-based platform, ice loads, ice fields...

... zone (EEZ) is planned. Japan has an EEZ domain that spans more than ten times the country area and is considered to have abundant resources under the seabed. Rare metals, minerals and natural gas can be found on the sea bottom. To develop these EEZs, a large-scale platform for natural resources...

...Performance Studies for Technological Complex Platform "Prirazlomnaya" Moored Tanker in Ice Conditions E.B. Karulin, M.M. Karulina Krylov Shipbuilding Research Institute St. Ptersburg, Russia ABSTRACT The paper presents results of theoretical and experimental investigations into performance...

... ABSTRACT: Based on the 5MW offshore wind turbine model developed by National Renewable Energy Laboratory (NREL), two new conceptual offshore wind turbine floating platforms with combined Tension legs- Mooring lines system were proposed in this paper. Taking the coupled dynamic responses...