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Herring Industry Board
WFA
Herring Industry Board
1975
WFA
Taft, Harrison S.
RR16
Taft, Harrison S.
RR16
Are Johan Berstad ; Harald Tronstad ; Anders Ytterland
2004
From April 2004 all new marine fish farms in Norway need to be certified to comply with technical criteria in a new Norwegian Standard NS 9415 (NAS 2003). This paper gives an overview of the design rules. The paper describes how loads and response are derived on the fish farm structures. In order to account for the large geometrical deflections occurring in fish farm components such as the net and anchor cables which interacts with stiffer structural components time domain simulations analysis of such facilities is required to assess the structural integrity. This paper reports a proposed practical calculation method and results from model tests which have been carried out to validate calculations. Additionally some applications are described.
Are Johan Berstad ; Harald Tronstad ; Anders Ytterland
2004
Oyvind Pettersen ; Karl M Wiklund
1999
In July 1999 a new booklet Pt 3 Ch 9 Direct Calculation Methods was introduced in DNV rules for Classification of High-Speed and Light Craft. This chapter includes requirements for hydrodynamic analyses global as well as local finite element models ultimate strength and fatigue strength analyses. The development of numerical tools especially for sea keeping and wave load predictions is growing rapidly and the rules also include requirements for verification and documentation of the computer programs. Background information is presented followed by an overview of the new rules for direct calculations. An extract of the rules is given first followed by an explanation of the levels of direct calculations that are provided i.e. for various sizes and types of craft. Finally the extreme response evaluation for an HSLC is discussed together with the documentation of computer programmes.
Oyvind Pettersen ; Karl M Wiklund
1999
D R Derrett
235e
The book has been written primarily to meet he needs of students when studying for the Department of Trade and Industry Certificates of Competency for Second Mate, First Mate and Master. The book approaches the subject of stability from the basic principles of forces and moments and their resolution. Chapters include: transverse statical stability, effect of free surface, displacement curves, Simpson's rules for areas and centroids, Final KG, calculating KB, BM and metacentric diagrams, list, trim, hydrostatic curves, water pressure, the inclining experiment, dynamical stability, bilging and permeability, angle of roll, dry-docking and grounding, heel due to turning, launching, Tchebycheff's Rules and shear force and bending moments.
D R Derrett
London ; The Maritime Press Ltd
ISBN number54000412
235e
1972
D R Derrett
235e
The book covers the subject of ship stability for students preparing for examinations leading to the Dept of Transport's Certificates of Competency for Deck Officers at various Class levels. The book approaches the subject of stability from the basic principles of forces and moments and their resolution. Chapters include: transverse statical stability, effect of free surface, displacement curves, Simpson's rules for areas and volumes, Final KG, calculating KB, BM and metacentric diagrams, trim, hydrostatic curves, water pressure, the inclining experiment, dynamical stability, bilging and permeability, angle of roll, dry-docking and grounding, heel due to turning, launching, Tchebycheff's Rules and Murray's Method.
D R Derrett
Heinemann Newnes ; Heinemann Professional Publishing
235e
1990
AP
AP
British Corporation
AP
British Corporation
AP
720.189
720.189
RR1d
386
RR1d
386
N G Hudson
RR4e
N G Hudson
LLP
RR4e
1996
350.11
350.11
Vince Jenkins (LR)
346b
Vince Jenkins (LR)
346b
NA
1990
Brief review of developments in IMO steering gear regulations and in the consequent requirements of classification societies is accompanied by a review of ram and rotary vane equipment by Hatlapa Donkin Brown Bros Frydenbo and Tenfjord.
NA
1990
NA
1991
Basic principals of the Bjorkman `Coulombi Egg' design of mid-deck tanker explained with attention to the control of oil spillage in event of collision or grounding.
NA
1991
J S Spencer ; P H Wirsching ; X Wang et al.
2006
Probability-based design promises the production of well-designed systems. Its basic advantage is the inclusion of more information into the design process than would generally be included in conventional design practices. Here the focus is on the application of probability-based design to establish a consistent code for tankers. An approach has been developed for formulating a code for design of ship structures to achieve uniform structural safety (reliability index) independent of ship size of magnitude of the design variables. The approach is based on the PSF (partial safety factor) format and a prescribed reliability level determined from calibration with existing classification society rules. Examples are presented for determining criteria for section modulus and initial scantlings of tankers. Formulations are based on material yield strength buckling ultimate strength and fatigue reliability.
J S Spencer ; P H Wirsching ; X Wang et al.
2006
Jeom Kee Paik ; Bong Ju Kim ; Jung Kwan Seo
2007
The ultimate limit state performance is evaluated of an AFRAMAX-class hypothetical double hull oil tanker structure designed by the IACS CSR (Common Structural Rules) method compared with the same class-type tanker structure designed by IACS pre-CSR method. The ultimate strengths of stiffened plate structures in deck and bottom parts under combined in-plane and out-of-plane actions and hull girder against vertical bending moment are computed for the two designs and the resulting computations are compared. The ALPS-ULSAP program is used for the ultimate limit state assessment of stiffened plate structures while the ALPS-HULL program is used for the progressive hull collapse analysis. ANSYS non-linear FEA method which uses more refined technology is also used for the same purpose. The insights and developments obtained from the present study are addressed.
Jeom Kee Paik ; Bong Ju Kim ; Jung Kwan Seo
2007
Burbano B N Rommel ; Ramirez S Said ; Lara M Leonel
2004
The paper presents the work carried out by the Instituto Mexicano del Petroleo (IMP) during the last years regarding the development of local rules for the design and reassessment of marine pipelines. This work takes into account environmental and operational conditions in the Gulf of Mexico as well as economic implications of these facilities within Mexican social and political fields. The costs for Petroleos Mexicanos (Pemex) of a possible failure of a marine pipeline are also considered. The results will be incorporated in a Norm of Reference to Pemex being the first regulating national document in this area.
Burbano B N Rommel ; Ramirez S Said ; Lara M Leonel
2004
L Kos0Rabcewicz-Zubkowski
205a
L Kos0Rabcewicz-Zubkowski
Manchester University
205a
1970