... ABSTRACT With the rapid development of offshore wind energy development, cable laying vessel, as the key construction equipment of power transmission in offshore wind farm construction, needs to be upgraded urgently. Firstly, this paper identifies the defects and shortcomings of the current...

... Abstract In this paper, we proposed a three-dimensional model for the tension analysis of submarine power cables during laying operations. Both flexural rigidity and axial elasticity were taken into consideration in the form of classical Euler-Bernoulli beam element theory. The governing...

... part of caisson with cables in the normal direction of a breakwater. From the numerical analyses, the higher wave forces are transmitted through the interlocking cables as the angle of an incident wave is larger, and the maximum allowable wave force was capable to be increased by sharing the wave...

... Engineering Co., Ltd., Minamata, Kumamoto, Japan (5) Institute of Industrial Science, University of Tokyo, Meguro-ku, Tokyo, Japan. . ABSTRACT This paper investigates numerically the effect of tension pulley on various physical quantities such as the flattening power output and the cable tension for the float...

..., the vehicle of KAIKO was lost by the break of the secondary cable that connected the launcher and the vehicle (Momma, Watanabe, Hashimoto and Tashiro, 2004 etc.). JAMSTEC have developed the alternate ROV KAIKO7000. Later, KAIKO7000 was reconstructed to KAIKO7000II (Nakajoh, Murashima and Yoshida, 2005 etc...

... parameters of underwater vehicle-communication cable system on power consumption of tethered underwater vehicle. This takes into account the hydrodynamic resistance of cable and is based on optimal selection of propulsion system components as well as the type and design of power set. KEY...

... is at 500-m depth of water and the other at 1000-m depth, with the motor power of 800 kW and voltage of 4000 V. Pumps are all started on vessel and the power cable for each of them is separated. The buffer in the depth of 5000-m is equipped with hose transporting pump with the power of 180 kW and a feeder...

.... The system would plug into a cable laid from the oil platform which provides power and a communication / video link. This eliminates the need for a ship. INTRODUCTION Tethered marine vehicles, ROV's, and Autonomous Marine Vehicles, AUV's, are well known to the marine work and survey industries...

... Sasamoto Tokyo University of Mercantile Marine Koutou-ku, Tokyo, Japan ABSTRACT Recently, we have been developing three underwater vehicles in JAMSTEC. The development trend of these vehicles is introduced in this paper. UROV7K system operates the vehicle by one optical fiber cable of the about 1mm...

... ABSTRACT: Small motions of the mooring line with buoys around its static configuration are simulated by time domain analysis, based on the collocation method. Also, the effect of the position and the number of the submerged buoys on the static and dynamic characteristics of the cable-buoy...

... of wave energy transmission and the theory of vibration, a semi-empirical formula is proposed for simplifying the evaluation of the impact energy and force of ship in regular waves upon the detached piers. coefficient expression ship motion pier strain energy impact energy cable force wave...

... ('ompall), Spoul. !{OREA 5 P Chang Seoul NatlOlial UJlJVelslt.l' Seoul. J{OREA. ABSTRACT Dynamic effects from the barge motion during davit lifting of offshore pipelines have been estimated through this study. In this paper a geometrically nonlinear finite cable element is presented to use in the modeling...

...Proceedmgs of the First PaCifiC/ASia Offshore Mechamcs SymposIum Seoul, Korea, 24-28 June, 1990 Copyrzght © 1990 by The 1nternatlOnai SOCiety of Offshore and Polar Engzneers THREE DIMENSIONAL DYNAMIC ANALYSIS OF OCEAN . CABLE-BODY SYSTEM K, Q Zhu ZllenJlallg SllipbUlldlllg Illbtltute Zbell)iallg...

...) MaxImum WIdth of maln body of the towed vehIcle Tangentlal and normal drag coefflclent of cable DIameter of cable at Jth segment Young's modulus of cable at Jth segment Forces in x-,y-,z-dlrectlons Drag force on Jth segment In k-dlrectlon Gravlty acceleratlon 'Moment of Inertla of towed vehlcle(flsh...

... Abstract: Experiments on vortex-induced vibration suppression devices were carried out at a canal. Helical wire type and flag type suppression devices were attached to a cable 17.45 meters in length and 28.6 millimeters in diameter. The effectiveness of the suppression devices was measured...

... ABSTRACT: This paper presents a method of static analysis of a marine cable spanning two fixed points. The top tension of the cable is given, while the total arc length, equilibrium configuration, and top and bottom angles are to be determined. In the analysis, a functional is Introduced...

... ABSTRACT: An efficient method for computation of responses of cable - ROV system as a result of forces from waves and current and/or thrust of ROV is presented. Analyses are performed for the model consisting of series of links connected to each other by ball-and-socket joint representing...