Design and Operational Experience of the SWATH Ship Navatek I

1993 ◽  
Vol 30 (03) ◽  
pp. 153-171
Author(s):  
Ludwig H. Seidl ◽  
William F. Clifford ◽  
James P. Cummings
Keyword(s):  
Structural Analysis ◽  
Parametric Study ◽  
Historical Development ◽  
Ship Motion ◽  
Actual Data ◽  
Operational Experience ◽  
General Design ◽  
Design Considerations ◽  
Constant Displacement ◽  
Hull Forms

A presentation is attempted linking the historical development, general design considerations for Small Waterplane Area, Twin-Hull (SWATH) hull shapes, the design of a particular SWATH, the Navatek/, and her operational experience. The "carrier vessel" concept on which the Navatek I is based is introduced. Principal dimensions and general arrangements are shown. A parametric study of twin-strut SWATH hull forms for a hull of constant displacement is presented in some detail. Stability and ship motion are discussed and actual data for the Navatek I presented. The overall structural analysis is briefly presented, including the method of analysis for the Navatek I. The SWATH captain's operational experience with the Navatek I during her extensive journeys is related to quite some extent.

Intelligent product manuals

2000 ◽  
Vol 214 (5) ◽  
pp. 411-419 ◽  
Author(s):  
D T Pham ◽  
S S Dimov ◽  
B J Peat
Keyword(s):  
Selection Criteria ◽  
Low Cost ◽  
General Design ◽  
Design Considerations ◽  
Knowledge Based ◽  
Operation And Maintenance ◽  
Support Costs ◽  
Intelligent Product ◽  
The Creation ◽  
Active Assistance

Intelligent product manuals are designed to allow product users to utilize a product as easily, effectively and with as little additional care as possible while minimizing support costs for manufacturers and suppliers. It is first shown how intelligent product manuals address these objectives by utilizing electronic, multimedia and knowledge-based technologies to provide active assistance to the user of the product during tasks such as installation, operation and maintenance. An architecture for the creation and deployment of an intelligent product manual is then proposed and general design considerations are outlined. Finally, four implementation approaches, based on XML, SGML, HTML and PDF technologies, are compared against a set of selection criteria. It is concluded that simple, low-cost solutions are available, which can provide significant benefits for appropriate businesses, including smaller companies.

Comparison of Ship-Motion Theory and Experiment for Destroyer with Large Bulb

1970 ◽  
Vol 14 (01) ◽  
pp. 67-75
Author(s):  
W.E. Smith ◽  
N. Salvesen
Keyword(s):  
Satisfactory Agreement ◽  
Small Amplitude ◽  
Ship Motion ◽  
Experimental Techniques ◽  
Strip Theory ◽  
Free Running ◽  
Hull Forms ◽  
Theory And Experiment

Experimental techniques for measuring pitch and heave motions for hull forms with large bulbous bows are investigated. It is found that free-running tests in regular small-amplitude waves give the most accurate results. A comparison of the pitch and heave amplitudes and phases obtained by the experiment and by the Korvin-Kroukovsky strip theory shows satisfactory agreement. It is concluded that with sufficiently accurate section representation, the strip theory can be used to predict head-seas motions not only for regular hull forms, but also for ships with bulbous bows and sonar arrays in small-amplitude waves.

Historical Survey

2017 ◽  
pp. 12-50
Keyword(s):  
Structural Analysis ◽  
Historical Development ◽  
Past Research ◽  
Construction Equipment ◽  
Historical Survey ◽  
Bridge Construction ◽  
Analysis Techniques ◽  
Construction Techniques ◽  
Modular Scaffolds ◽  
Construction Loads

Chapter 2 overviews the historical development and past research into temporary structures from 1970 up to 2016 and describe the various problems that have occurred necessitating changes to traditional design and construction techniques. The survey covers tubular, proprietary and modular scaffolds, bridge falsework as well as bridge construction equipment. Particular areas emphasised are the changes introduced by the use of advanced structural analysis techniques and the need for changes in procedures following the analyses of collapses of temporary structures. An overview of various solutions is presented, including the use of different materials (steel, aluminium, timber and bamboo). The chapter shows that same analysis procedures are used for these different materials. The chapter then overviews the actions acting on temporary structures such as permanent loads and variable construction loads and finishes with an introduction to failures of falsework and scaffolding structures.

Plastic fibres as the only reinforcement for flat suspended slabs: Parametric study and design considerations

2014 ◽  
Vol 70 ◽  
pp. 88-96 ◽  
Author(s):  
P. Pujadas ◽  
A. Blanco ◽  
S.H.P. Cavalaro ◽  
A. Aguado ◽  
S. Grünewald ◽  
...  
Keyword(s):  
Parametric Study ◽  
Design Considerations
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