Download or read book A Comparison of Ship Maneuvering Characteristics for Rudders and Podded Propulsors written by Michelle K. Betancourt and published by . This book was released on 2003 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comparison of a high speed container ship using a rudder versus a podded propulsor is made to study replacing a rudder with a pod. A mathematical model is altered to simulate a ship operating with a rudder and with a pod to maneuver. The model incorporates the nonlinear maneuvering equations and couples the surge and sway forces, yaw and roll moment, and the roll angle induced during a steady turn with varying rudder and pod angles. The model uses the hydrodynamic derivatives and coefficients for a high speed container ship. The equations are numerically integrated in order to predict the roll angle, sway and surge velocities, and the ship's position in the xy-plane. Both transient and steady state results are utilized to quantify the relative efficiency of each system. The results are used as a preliminary study into replacing a rudder on a ship with a podded propulsor. The results indicate that the ship responds faster and has a shorter turning radius with the pod at lower initial speeds and pod angles, while the rudder responds better at high speeds regardless of angle. Further research is necessary to study the effects of changing the pod's position and increasing the number of pods used.

Download or read book SHIPHANDLING WITH AZUMUTHING PODDED PROPELLERS written by ALPERTUNGA ANIKER and published by ALPERTUNGA ANIKER. This book was released on 2021-10-04 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vessels ftted with azimuthing podded propulsors have much better maneuvering capabilities. They are also environmentally friendly with much reduced exhaust emissions. With these unique features ,they offer signifcant economic, safety and environmental advantages to society, but unfortunately, the routines and the emergency procedures of the azimuthing podded propulsion system were not clearly defned and incorporated into onboard ISM systems. Masters, Chief Engineers and Pilots should receive a specialist training before they lay their hands on the controls, but instead most of them still have to try learning on the job, which sometimes lead to serious incidents, near misses and accidents with serious consequences. One of the reasons that encouraged me to write this book is to draw attention to these serious shortcomings which someday may cause society to pay a high price. My main focus in this book has been on telling about the shiphandling behaviours of electrically-driven azimuthing propulsors rather than the mechanically-driven azimuthing propulsors. Despite the fact that the shiphandling principles of both systems are quite similar, I chose not to mention much about the mechanically driven azimuthing propulsors as they are mostly related with tugboats. Tugboat handling is another speciality, which I believe should be explained only by seasoned tugboat captains themselves. I am a professional maritime pilot but an amateur author and this book is solely intended to share my humble experience and knowledge with my colleagues, ship captains, students and all other interested parties of the maritime industry. Dear Reader, I had actually started writing this book in order to keep my experience on the subject in writing and bring together all the data I have collected from various resources at different times. To improve my knowledge and experience, I have also joined a special manned model course for “Pod Handling and Emergencies” at Port Revel Shiphandling Centre which is located at Grenoble, France in May 2010. Vessels ftted with azimuthing podded propulsors have much better manoeuvring capabilities, such as reduced turning diameters and signifcantly shorter stopping distances compared to the conventional systems with a fxed propeller and conventional rudder. They are also environmentally friendly with much reduced exhaust emissions. With these unique features ,they offer signifcant economic, safety and environmental advantages to society, but unfortunately, the routines and the emergency procedures of the azimuthing podded propulsion system were not clearly defned and incorporated into onboard ISM systems. Even class surveyors and Port State surveyors don’t seem to have enough knowledge about this technology. Masters, Chief Engineers and Pilots should receive a specialist training before they lay their hands on the controls, but instead most of them still have to try learning on the job, which sometimes lead to serious incidents, near misses and accidents with serious consequences. One of the reasons that encouraged me to write this book is to draw attention to these serious shortcomings which someday may cause society to pay a high price.

Download or read book A Study of Ship Manoeuvrability written by R. P. Gokarn and published by Springer Nature. This book was released on with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Maneuvering Response written by P. Aranow and published by . This book was released on 1983 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Marine Rudders Hydrofoils and Control Surfaces written by Anthony F. Molland and published by Butterworth-Heinemann. This book was released on 2021-11-30 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt: The course keeping and manoeuvring requirements for a ship are governed by international maritime law. In assessing and predicting the course keeping and manoeuvring capabilities of the ship, knowledge is required of the rudder forces necessary to keep a course or facilitate a manoeuvre. The second edition of Marine Rudders, Hydrofoils and Control Surfaces includes up-to-date data and rudder design techniques that enable the rudder forces to be estimated, together with any interactions due to the hull and propeller. The new edition describes the design and application of hydrofoils including shape adaptive design, and their applications including hydrofoil craft, yachts, and kite surfing hydrofoils. The professional will also face the need to design control surfaces for motion control, such as roll and pitch, for surface vessels and submersibles, and the book contains the necessary techniques and data to carry out these tasks.This book is for practicing naval architects and marine engineers, small craft designers, yacht designers, hydrodynamicists, undergraduate and postgraduate students of naval architecture, maritime engineering and ship science, and the broader engineering community involved in the development of marine craft that rely on the generation of 'lift' such as control engineers and aerodynamicists. - Describes techniques for analyzing the performance characteristics of rudders, hydrofoils, and control surfaces - Includes extensive design data and worked examples for the analysis of rudder, hydrofoil and control surface performance - Provides a detailed examination of the design of hydrofoils

Download or read book Marine Propellers and Propulsion written by John Carlton and published by Butterworth-Heinemann. This book was released on 2012-10-30 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt: The early development of the screw propeller. Propeller geometry. The propeller environment. The ship wake field, propeller performance characteristics.

Download or read book Background and Review of Ship Maneuvering Response Experiments written by W. McIlroy and published by . This book was released on 1982 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Marine Rudders and Control Surfaces written by Anthony F. Molland and published by Elsevier. This book was released on 2011-02-24 with total page 451 pages. Available in PDF, EPUB and Kindle. Book excerpt: Marine Rudders and Control Surfaces guides naval architects from the first principles of the physics of control surface operation, to the use of experimental and empirical data and applied computational fluid dynamic modelling of rudders and control surfaces.The empirical and theoretical methods applied to control surface design are described in depth and their use explained through application to particular cases. The design procedures are complemented with a number of worked practical examples of rudder and control surface design.• The only text dedicated to marine control surface design• Provides experimental, theoretical and applied design information valuable for practising engineers, designers and students• Accompanied by an online extensive experimental database together with software for theoreticalpredictions and design development

Download or read book Turning and Maneuvering Characteristics of the WMEC as Represented by Model 5347 written by Grant A. Rosslignol and published by . This book was released on 1976 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The results of spiral and turning maneuvers conducted with Model 5347, representing a proposed design of the USCG Medium Endurance Cutter (WMEC), indicate that the ship will be directionally stable at an ahead speed of 5 knots and will have excellent turning characteristics, whether appended with the 69.6 square foot (6.47 square metres) rudders (A) or the 50.0 square foot (4.65 square metres) rudders (B). At an approach speed of 15 knots and a rudder angle of 35 degrees, the ship will turn in 2.80 ship lengths when appended with the large rudders as compared to 3.53 ship lengths when appended with the small rudders." -- Author's abstract.

Download or read book The Resistance and Propulsion of Ships written by William Frederick Durand and published by . This book was released on 1898 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mathematical Modeling of Inland Vessel Maneuverability Considering Rudder Hydrodynamics written by Jialun Liu and published by Springer Nature. This book was released on 2020-05-11 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book demonstrates that different rudder configurations have different hydrodynamic characteristics, which are influenced by the profile, the parameters, and the specific configuration. The author proposes new regression formulas to help naval architects quickly estimate the rudder-induced forces and moments in maneuvering. Furthermore, the author proposes and validates an integrated maneuvering model for both seagoing ships and inland vessels. Using the proposed regression formulas and maneuvering model, the specific impacts of rudder configurations on inland vessel maneuverability are studied. In turn, the book demonstrates the application of Reynolds-Averaged Navier–Stokes (RANS) simulations to obtain rudder hydrodynamic characteristics, and the integration of the RANS results into maneuvering models as an accurate estimation of rudder forces and moments needed to quantify the impacts of rudder configurations on ships’ maneuvering performance. In addition, the author proposes new criteria for the prediction and evaluation of inland vessel maneuverability. Simulations of ships with various rudder configurations are presented, in order to analyze the impacts of rudder configurations on ship maneuverability in different classic and proposed test maneuvers. Offering essential guidance on the effects of rudders for inland vessel maneuverability, and helping practical engineers make informed design choices, the book is of interest to researchers and academics in the field of naval engineering, as well as students of naval architecture. Industrial practitioners working on ship design may also find it beneficial.

Download or read book The Speed and Power of Ships written by David Watson Taylor and published by . This book was released on 1943 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book STUDIES OF SHIP MANEUVERING RESPONSE TO PROPELLER AND RUDDER ACTIONS written by and published by . This book was released on 1965 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: An attempt is made to extend ship-maneuvering analysis for application at low ship speeds. Captive-model experiments are made to investigate effects of non-equilibrium propeller speeds on rudder force and effective thrust. Other experiments are made to explore first-order effects of very large drift angles and pure yaw rotation on hull hydrodynamic reactions. The experimental results, together with previous rotating-arm data, are applied in motion equations, accounting for both extreme propeller actions and the occurrence of large drift angles and turning rates. Also included are propulsion and rudder time lags, and the influence of uniform water current on ship trajectory. The equations are programmed for computation, and ship response to a simple docking maneuver is predicted. The computation is repeated several times to examine sensitivity of ship motions and trajectory to variations of operating parameters, namely, maximum reverse propeller speed, engine response time, and water-current direction.

Download or read book Transactions The Society of Naval Architects and Marine Engineers written by Society of Naval Architects and Marine Engineers (U.S.) and published by . This book was released on 2006 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt: List of members in vols. 1-24, 38-54, 57.

Download or read book The Maritime Engineering Reference Book written by Anthony F. Molland and published by Elsevier. This book was released on 2011-10-13 with total page 921 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Maritime Engineering Reference Book is a one-stop source for engineers involved in marine engineering and naval architecture. In this essential reference, Anthony F. Molland has brought together the work of a number of the world's leading writers in the field to create an inclusive volume for a wide audience of marine engineers, naval architects and those involved in marine operations, insurance and other related fields. Coverage ranges from the basics to more advanced topics in ship design, construction and operation. All the key areas are covered, including ship flotation and stability, ship structures, propulsion, seakeeping and maneuvering. The marine environment and maritime safety are explored as well as new technologies, such as computer aided ship design and remotely operated vehicles (ROVs).Facts, figures and data from world-leading experts makes this an invaluable ready-reference for those involved in the field of maritime engineering.Professor A.F. Molland, BSc, MSc, PhD, CEng, FRINA. is Emeritus Professor of Ship Design at the University of Southampton, UK. He has lectured ship design and operation for many years. He has carried out extensive research and published widely on ship design and various aspects of ship hydrodynamics.* A comprehensive overview from best-selling authors including Bryan Barrass, Rawson and Tupper, and David Eyres* Covers basic and advanced material on marine engineering and Naval Architecture topics* Have key facts, figures and data to hand in one complete reference book

Download or read book Naval Engineers Journal written by and published by . This book was released on 1998 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book W rtsil Encyclopedia of Ship Technology written by and published by . This book was released on 2015 with total page 663 pages. Available in PDF, EPUB and Kindle. Book excerpt: