THE CORROSION PROBLEMS OF THE NAVAL ARCHITECT

2009 ◽  
Vol 47 (3) ◽  
pp. 462-467
Author(s):  
W. H. Hatfield
Keyword(s):  
Naval Architect

scholarly journals Simulator Demonstrations of Different Retrofit Options of a Self-propelled Inland Vessel

2017 ◽  
Vol 47 (2) ◽  
pp. 111-117 ◽  
Author(s):  
Csaba Hargitai ◽  
Juha Schweighofer ◽  
Győző Simongáti
Keyword(s):  
European Union ◽  
Framework Programme ◽  
The European Union ◽  
Single Screw ◽  
Seventh Framework Programme ◽  
Custom Made ◽  
Inland Waterway ◽  
Calculation Algorithms ◽  
Force Calculation ◽  
Naval Architect

The project MoVe IT! (www.moveit-fp7.eu), funded by the Seventh Framework Programme of the European Union, was focussed on modernisation of inland waterway vessels by retrofitting. In order to stimulate an implementation of the results by the industry, visualization of the positive impacts was realised by a set of vivid demonstrators. In this paper, the demonstrations by simulators for a single screw motor cargo vessel of the type Johann Welker are described.The motion simulations are carried out by a custom made (for inland vessels developed) computer program, which use common naval architect force calculation algorithms and a new approximation theory for added masses.The simulator demonstrations comprise descriptions and visualisations of ship lengthening, application of different rudder and a new propulsion device. Five different cases are examined, the original vessel and four retrofit options.First retrofit variant is the lengthened vessel with original rudder and propeller. Other two analysis are performed changing only the rudder system. In fourth simulator demonstration the original propeller is changed to a pump propeller (a novel propulsion device).The environment are in the simulator demonstrations: constant draught of the vessel, and calm, infinite deep waterway.As results of simulator demonstrations the effects on fuel consumption and manoeuvrability are discussed in the paper.

John Scott Russell: A Great Victorian Engineer and Naval Architect

1978 ◽  
Vol 19 (4) ◽  
pp. 767
Author(s):  
R. A. Buchanan ◽  
George S. Emmerson
Keyword(s):  
Naval Architect

Improving Mariner/Ship Interaction

1994 ◽  
Vol 31 (02) ◽  
pp. 94-105
Author(s):  
Ian J. Lowry
Keyword(s):  
Control Strategy ◽  
Interface Design ◽  
Statistical Data ◽  
Design Spectrum ◽  
Confidence Levels ◽  
Codes Of Practice ◽  
Potential Benefits ◽  
Ship Control ◽  
Naval Architect

This paper focuses on mariner-ship interaction from the practical end of the design spectrum. Statistical data on marine collisions, rammings and groundings attribute a considerable percentage of marine casualties to poor ship controllability. A vessel's controllability is of a dichotomous nature, constrained not only by its inherent controllability characteristics, fixed by the naval architect, but also by the skill and the expertise of the shiphandler in initiating a conclusive control strategy. The results of an international survey of naval architects and shiphandlers are presented. The techniques of frequency distribution and factor analysis were used to identify the key ship controllability effectors. This survey highlights where improvements in terms of interface design can be made. The survey identifies the key controllability effectors of naval architects and ship-handlers for effective mariner-ship interaction. A case study is presented which identifies the applicability of part-task ship simulation to improve confidence levels in practical ship control. For effective mariner/ship interaction, the designers of ships must use the various codes of practice for a ship's bridge in order to improve the bridge as a control station, and marine licensing authorities have to realize the potential benefits that training with computerized ship simulation can bring the industry.

Lessons to be Learned from the Study of Indigenous Craft

2015 ◽  
Author(s):  
Peter G. Noble
Keyword(s):  
High Performance ◽  
Mark Twain ◽  
Evolutionary Process ◽  
Long Tail ◽  
Scientific Methods ◽  
The Bible ◽  
History Of ◽  
New Ideas ◽  
Naval Architect ◽  
Design Construction

By looking backwards we can often discover solutions that will allow forward progress. We see in the bible the idea that history repeats itself: What has been will be again, what has been done will be done again; there is nothing new under the sun. Ecclesiastes 1:9 But the author subscribes to the idea put forward by the American humorist, Mark Twain: History doesn’t repeat itself, but sometimes it rhymes. The design and construction of water-borne craft using “scientific” methods is a relatively recent development in the context of the whole history of that activity, and is by no means universally applied even today Many traditional craft in current service still rely on the process akin to natural selection, as proposed by Darwin, that is, it is not the strongest, most intelligent nor the fittest that survive but those that best adapt. And the evolutionary process continues today. From Bangkok water taxis with “long-tail” propulsion systems, and from Haitian fishing boats with high performance new sails to whaling umiaks in NW Alaska covered with tensioned membrane skins made from walrus hide and equipped with outboard motors, there can be value in studying the design, construction and operational approaches of these craft. Such consideration can lead to insights for the modern naval architect. A number of well-researched publications (Tapan Adney, 1964) and (Haddon, 1975) give a wealth of information on indigenous craft. Sturgeon Nose Canoe USN ZUMWALT Class Destroyer. Noble Lessons to be learned from the study of indigenous craft 2 Lessons such as optimizing weight/strength ratios, minimizing resistance, utilizing materials in clever ways, developing repairable structures etc., can all be learned from the study of indigenous craft. The sense of continuity with a living past obtained by the study of the work of previous generations of designers and builders, realizing that many current problems were their problems too, is both valuable and satisfying. That said, not all examples given in this paper can be directly linked to designers actively seeking out past developments. Some examples have occurred by coincidence, some by accident and some by unwitting “reinvention of the wheel”. Many “new” ideas, however, have been tried before and it is very often possible to test a new idea against past experience. This paper builds on previous ethno-technical study, (Noble 1994) describing the author’s experience in this field and uses a number of specific examples to illustrate the premise.

Knowledge Management - An Enabler for SNAME & Naval Architects

2014 ◽  
Author(s):  
Nicholas Parkyn
Keyword(s):  
Knowledge Management ◽  
Best Practices ◽  
Competitive Advantage ◽  
Value Creation ◽  
Value Proposition ◽  
Engineering Process ◽  
The Core ◽  
Key Factor ◽  
Knowledge Structuring ◽  
Naval Architect

Introduction A Knowledge Management System is a valuable tool for the Naval Architect or Marine Professional. It plays an important role in transforming the data to information and information to knowledge which is known as the transformation lifecycle. Knowledge Management is a key factor for creating value and competitive advantage. A common approach to knowledge structuring facilitates the sharing of knowledge and collaboration with others, based on knowledge sharing, which increases the value proposition of organizations like the SNAME. “The transformation of information into knowledge is a critical one, lying at the core of value creation and competitive advantage” – Stewart 2001 Positioning Knowledge Management can be applied in many different ways related to the specific requirements of organizations, societies, companies and individuals. National Shipbuilding Research Program (NSRP) has done extensive work in the area of Knowledge Aware Engineering to enable: - Active Delivery Relevant Knowledge - Cultivation of Technical Memory - Enablement of Engineering Decision Support - Integration into the Engineering Process - Supports for standards, heuristics and best practices.

Studi Karakteristik Stabilitas dan Konstruksi Kapal Berbahan High Density Polyethylene (HDPE)

2021 ◽  
Vol 12 (2) ◽  
pp. 315-323
Author(s):  
Muammar Kadhafi ◽  
◽  
Sunardi Sunardi ◽  
Agus Triono ◽  
Wahida Kartika Sari ◽  
...  
Keyword(s):  
High Density Polyethylene ◽  
Environmentally Friendly ◽  
High Density ◽  
International Maritime Organization ◽  
Loading Conditions ◽  
Marine Tourism ◽  
Design Software ◽  
The Stability ◽  
Naval Architect ◽  
Main Material

The development of fishing and marine tourism requires the support of naval architecture, especially in small boat. The use of wood as the main material for shipbuilding has recently become a problem considering the decreasing availability of wood, while the use of fiber is classified as less environmentally friendly because it uses chemical resin and difficult to repair when it breaks and cannot be recycled. The aim of this research is to design the High-Density Polyethylene (HDPE) boat. The design was carried out by using naval architect design software. The stability of boat was calculated by using three loading conditions such as when leaving the port, in the sea and when returning to the port. The International Maritime Organization (IMO) safety criteria was using to evaluation of boat stability where the three loading conditions have met the IMO standard. The construction of HDPE boat was carried out by using DNV rules.

Improved Shipboard Signage

1999 ◽  
Vol 15 (01) ◽  
pp. 32-52
Author(s):  
J. Carey Filling ◽  
Elizabeth Gauthier ◽  
Walter Kopp
Keyword(s):  
Life Cycle ◽  
Physical Properties ◽  
Complete Agreement ◽  
Light Conditions ◽  
New Materials ◽  
Replacement Process ◽  
Marine Engineer ◽  
User Friendly ◽  
Naval Architect ◽  
Design Construction

This paper provides an introduction to shipboard signage design, construction, and installation. It is intended to assist the naval architect and marine engineer in the design of signs for shipboard use, help the shipyard in its initial procurement and installation of shipboard signage, help the ship's crew determine what additional signs are needed during the life cycle of the vessel, and aid in the sign replacement process. There are a number of standards and specifications, both commercial and military, that deal with signage but few are in complete agreement. Research into these standards has resulted in the development of a user-friendly shipboard signage guide, applicable to both military and commercial vessels, which is paraphrased in this paper. Guidance is provided for the most commonly used shipboard signage applications and includes the use of new materials which are less expensive, lighter weight, and more visible even in low or no light conditions. By using this guide, effective signs which offer reduced cost (material and installation) and weight, with improved readability, clarity, and meaning will result. Specific areas addressed include signage types, layout, wording, symbology, physical properties, installation, and cost.

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