Journal of Offshore Structure and Technology
Volume 6, Issue 1 (2019)
Published
Table of contents
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Design Problems for Existing Dry Dock Gates for Graving Docks and Trends to be Followed in Design of Mitre Type Dock Gates
Abstract: Dry dock is a structured zone wherein construction, repairs and maintenance of merchant vessels and boats are carried out. Presently, in India, there are so many docks which are under both private control and as well as Indian Navy control, which have their gates in their life end states and are still being operated under very unsafe conditions. In this regard, Indian Navy has recognized to replace most of the …
Published in Journal of Offshore Structure and Technology · Vol. 6, Issue 1, 2019 · pp. 1–9 Read article
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Structural Analysis of NFRP Composite Boat Hull Using Finite Element Method
Abstract: Composite materials have conquered over conventional materials, is a reality now. Despite many advantages, composite materials like CFRP and GFRP etc. lack some key properties like sustainability, renewability and environmental impact. In this perspective, natural fiber composites and bio-composites are gaining more attention. The principal driving forces for new bio‐composite materials are: the cost of natural fibers (currently priced at one‐third of the cost of glass fiber or less), weight …
Published in Journal of Offshore Structure and Technology · Vol. 6, Issue 1, 2019 · pp. 10–17 Read article
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Study and Checking of Adequacy of Pinion Stiffness for Jacking Systems of Self Elevating Units during the Conversion Jobs
Abstract: Jacking systems are used to elevate and lower the hull of self-elevating units in the elevated condition and to raise and lower the legs in the floating condition. In one of a conversion job of a Jack-up Rig from MODU to MOPU, which has been considered here as a case study, in which during conversion it has been identified that the inadequacy of the pinion stiffness could be one of …
Published in Journal of Offshore Structure and Technology · Vol. 6, Issue 1, 2019 · pp. 18–27 Read article
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Underwater Noise Radiated by Fishing Vessels in Visakhapatnam Fishing Harbor
Abstract: The sound has always been a better measure to understand the oceans. Among the various sources of underwater noise, mainly physical, biological and anthropogenic, it is seen that through the increase in anthropogenic noise in the oceans, the ambient noise levels are rising. Fishing vessel radiated noise has been a major concern in the fisheries acoustic scientific community due to the possible effects on altering the natural activities of the …
Published in Journal of Offshore Structure and Technology · Vol. 6, Issue 1, 2019 · pp. 28–38 Read article
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Study on the Failures of Raw Water Tower Structural Joints When the Air Gap of the Jack up Rigs is Increased
Abstract: 1. ABS Rules for Building and Classing Offshore Installations.2. Guidelines for Site Specific Assessment of Mobile Jack-up Units. SNAME T&R 5-5A.3. ABS. RP-2A, WSD, Recommended Practice for Planning, Designing and Constructing Fixed Offshore Platforms- Working Stress Design. 21st Edn. Dec 2000; Suppl 1–3.4. Ohta T, Yamauchi H, Toriumi M. Design Method of Leg Structure of Jack-up Rigs. NKK Corporation, Engineering Research Centre, Kawasaki, Japan. 1st International Offshore and Polar Engineering …
Published in Journal of Offshore Structure and Technology · Vol. 6, Issue 1, 2019 · pp. 39–48 Read article