Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 25 for “"Catamaran"”.
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Effects of wave interference of catamaran hulls
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Naval Architecture and Marine Engineering, 1955.
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Hydrodynamic design of high speed catamaran vessels
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 2003.
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Optimization of catamaran demihull from wave resistance stand point.
Massachusetts Institute of Technology. Dept. of Ocean Engineering. Thesis. 1973. M.S.
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A preliminary design tool for resistance and powering prediction of catamaran vessels
During the last decade catamaran ships have been very rapidly evolved into a dominant mode of sea transportation. Their particular area of proliferation is the short sea shipping where they show considerable superiority over competitive designs in attributes such as power requirements, economy, …
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A Theory and Analysis of Planing Catamarans in Calm and Rough Water
A planing catamaran is a high-powered, twin-hull water craft that develops the lift which supports its weight, primarily through hydrodynamic water pressure. Presently, there is increasing demand to further develop the catamaran's planing and seakeeping characteristics so that it is more …
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A parametric study of the stress distribution in a four-celled box beam model of the ASR-21 Class Catamaran cross-structure.
Thesis: Ocean E., Massachusetts Institute of Technology, Department of Ocean Engineering, 1972
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Hydrodynamic evaluation of high-speed semi-SWATH vessels
… performance of a slender, semi-SWATH, prototype catamaran with variable demi-hull separation. Hull separation's influence on vessel performance was studied in terms of calm water resistance and seakeeping response in a bare-hull state, and when equipped with quasi-active lifting appendage …
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Caractérisation hydraulique des méthodes hydrologiques des débits réservés pour les habitats aquatiques
… du lit) étudiées directement sur le terrain à Catamaran Brook (NB). L'objectif est d'établir des relations (fonctions de puissance) entre les caractéristiques hydrauliques et le débit pour 24 sites à Catamaran Brook afin de sélectionner un débit minimum. L'étude regroupera également les …
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Innovative hull design for servicing offshore wind turbines
… geometry, and the addition of heaveplates to catamaran hulls. A directional study on WFSV interaction with a monopile was carried out, and polar plots of performance were calculated. The limits of motion that a safe transfer can take place from the literature were compared with those of a …
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Multi-body Dynamics Simulation and Analysis of Wave-adaptive Modular Vessels
Catamarans provide vast deck space, high thrust efficiency, and excellent transverse stability, however, in rough conditions they can be susceptible to deck slamming from head seas or bow diving in following seas and a pitch-roll coupling effect that can lead to uncomfortable corkscrew motion under …
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Feasibility study into a novel vessel design for accessing offshore wind turbines
… concept was selected. The selected concept is a catamaran vessel with the capability to take on significant ballast water whilst jacking the deck away from the hulls, creating two distinct vessel configurations: the transit mode where it operates as a standard, fast catamaran for getting to and …
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Comportamento hidrodinâmico de quebra-mares flutuantes
… a good agreement. The numerical results for a catamaran cross section and the irregular frequency phenomenum are presented too.
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The design of a surface launch and recovery fender for DSRV "Alvin"
… a bumper in the recovery of DSRV ALVIN by her catamaran mother ship, LULU, is the subject of this study. It was determined, from first order analysis of the surge velocities of these two vessels in recovery position in a sea state 6, that any such bumper or combination of bumpers (i.e. bumper …
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Modélisations déterministe et stochastique de la température de l'eau en rivière
… approche a été testée à l'aide des données de Catamaran Brook, un petit ruisseau du Nouveau-Brunswick. Le modèle déterministe évalue le régime thermique du cours d'eau en fonction du budget énergétique du bassin. Le modèle stochastique intègre la méthode Box et Jenkins (1976) et les données de …
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Aquaculture Basket Detection and Tracking for Autonomous Surface Vehicles
… Grant introduced the Oystermaran, an autonomous catamaran specifically designed for this task. This thesis presents contributions to the electronics, controls, and perception systems of the Oystermaran project. In particular, it presents an oyster basket detection and tracking method using the …
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The allometry of territory size and metabolic rate as predictors of self-thinning in young-of-the-year Atlantic salmon (Salmo salar)
… Atlantic salmon (Salmo salar) in Catamaran Brook, New Brunswick, throughout their first growing season. In general, the results were consistent with the predictions of the territory-size hypothesis since the observed densities were high enough to expect competition for space while …
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Parametric Excitation of a DWSC
… DWSC, basically a stepped classic spar with a catamaran as its deck, because of certain unique features, may be susceptible to parametric excitation. This thesis examines the phenomenon of parametric excitation with respect to roll motion in head seas, using time-domain simulation and stability …
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Study into the use of the GNSS for maritime structure analysis
… motion, that was conducted onboard Red Jet 4, a catamaran-type vessel. The experimental setup is described, and the results are briefly considered.<br/>A method for determining the optimal configuration of the receiver network is also proposed alongside an algorithm to detect plastic deformation …
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Analyse bivariée des caractéristiques des températures de l'eau en rivière
… extrêmes. La région d'étude était le ruisseau Catamaran, un affluent du bassin versant de Miramichi. Les données sur la température de l'eau étaient disponibles de 1992 à 2000. Deux composantes peuvent expliquer les séries chronologiques de la température de l'eau : la composante annuelle et …
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The history of plutonium and cesium-137 contamination of the Ob River delta sediments
… accommodate coring operations. An inflatable catamaran was built for this purpose and used during the month of July, 1994 for field operations. A Russian Fisheries Protection vessel served as a base of operations and means of transport between stations for the catamaran. Samples were collected …
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