Browsing Institutt for marin teknikk by Issue Date
Now showing items 181-200 of 3421
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Prediction of the accuracy of a dynamic positioning system of a vessel, The Solitaire
(Master thesis, 2011)This report presents the modeling of a pipelay vessel’s motions -the Solitaire- and its DP controller using the bond graph method. The governing equations are obtained with hydrodynamics considerations. Problems of finding ... -
Prediction of ice loads and response for an Arctic SPAR
(Master thesis, 2011)Moored floating facilities in the Arctic region can be exposed to ice loads that far exceed those of waves, wind and current. Based on previous experience it has been found that a well-working ice management system can ... -
Vertical Wave Loads and Response of a Floating Fish Farm with Circular Collar
(Master thesis, 2011)In this master thesis the vertical wave loads and vertical responses of the floating collar of a circular fish farm have been investigated. The response has been investigated for a collar without the presence of mooring ... -
Ultimate strength of aluminium panels, considering HAZ effects
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:326, Doctoral thesis, 2011)Aluminium stiffened panels have been increasingly used in marine, offshore and transportation industries, especially where high strength/weight ratio structures are highly required. However, the ultimate strength of aluminium ... -
Ice induced resistance of ship hulls: A comparison of resistance estimated from measurements and analytical formulations
(Master thesis, 2011)Due to global warming and hydrocarbon exploration in the Arctic areas, there is an increasing maritime activity in ice infested waters. Today one can with good accuracy predict if a vessel will be able to survive an encounter ... -
Fault Monitoring and Fault Recovery Control for Position-Moored Vessels
(Journal article; Peer reviewed, 2011)This paper addresses fault-tolerant control for position mooring of a shuttle or floating production storage and offloading vessels. A complete framework for fault diagnosis is presented. A loss of a sub-sea mooring line ... -
An investigation of wave conditions and wave induced loads for design of wind turbine foundations at 15 – 40m depth
(Master thesis, 2011)The motivation for this thesis is to investigate how storm sea states in deep water transforms as the waves propagate towards shallow water. This is connection with the design of bottom fixed wind turbines in finite water ... -
Comparison of Different Methodologies for Dynamic Installation Analysis of Flexibles
(Master thesis, 2011)Subsea umbilicals and power cables are essential components in sea bed infrastructure, and necessary for control and monitoring of remote wells. By acting as a fixed link between a platform and a subsea wellhead, umbilicals ... -
Navigation of ROVs and Basic Signal Processing
(Master thesis, 2011)A dynamic positioning (DP) system for a ROV is being developed in the Automated Underwater Robotics (AUR) laboratory at the Norwegian University of Science and Technology (NTNU). The AUR lab at NTNU has a ROV and a research ... -
LNG as fuel in global trades for Höegh car carriers
(Master thesis, 2011)LNG shipping is tracking back to the 1950s, and has for more than half a century been finding promising. It is not until the last years LNG has been taken into commercial shipping as a fuel, and more widely considered a ... -
Clump-weight Trawl Gear Interaction with Submarine Pipelines
(Master thesis, 2011)A recent development in bottom trawling is the use of twin trawl equipment, where two trawl nets are towed side by side from a single vessel. This increases the catch rate and efficiently of the trawler. Governed by cost ... -
Dynamic response analysis of a tension-leg floating wind turbine
(Master thesis, 2011)Offshore wind energy has a significant potential and for increasing water depths it may be most cost effective to exploit this potential by using floating wind turbines. Many concepts have been suggested but it is not yet ... -
Stochastic dynamic system analysis of wave energy converter with hydraulic power take-off, with particular reference to wear damage analysis
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:102, Doctoral thesis, 2011)The study of the renewable energy has drawn increasing attention in the recent years. Wave energy with its relatively high power density is a major resource that has remained untapped until recently. Different types of ... -
Capacity of Deep Water Flexible Risers
(Master thesis, 2011)A flexible riser operating in deep water will experience large environmental forces. Due to the length of the riser, dynamic tension from drag forces will be substantial. The tensile force is transferred directly into the ... -
Toward a system of real-time prediction and monitoring ofbottom damage conditions during ship grounding
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:223, Doctoral thesis, 2011)This work o ers an analysis of the ship grounding process, examining a range of topics from the ability to predict the location of obstructions to a ship bottom's resistance to penetration and outer and inner hull plates' ... -
Analysis of Mooring System for a Floating Production System
(Master thesis, 2011)Understanding the behavior of a mooring line that is connected to a Suezmax vessel is a crucial requirement for our industry. Thus, we should model and analyze such a mooring line under a variety of environmental conditions. ... -
Performance assessment of the energy system onboard an LNG FPSO
(Master thesis, 2011)LNG power and heat systems, the balance of demand is dependent of the feed gas and on the location of the production vessel. Further, the power and heat balance is dependent on the gas processing efficiencies and the air ... -
Condition Monitoring as a driver for Logistics and Maintenance Planning
(Master thesis, 2011)In this M.Sc. Thesis the Maintenance Management (MM) loop developed by the Norwegian Oil Directorate (now PSA) has been used as a basis. The model was developed during the "basic study for Maintenance Management" in 1998. ... -
Estimation of ALS wave-column impact loads for a semi-submersible and a simplified assessment of the associated structural response
(Master thesis, 2011)Breaking waves that impacts with a platform column will give large impact loads. These loads are some of the largest loads acting on a platform during its lifetime. During the summer 2010, MARINTEK performed model tests ... -
A framework for cost-benefit analysis on use of condition based maintenance in an IO perspective
(Master thesis, 2011)The maintenance costs of an offshore production platform make up about 30 % of the daily costs, and this is not including the cost of shutdown caused by functional failure. Reducing the maintenance costs will have a great ...