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ship design --- naval architecture --- marine engineering --- hydrodynamics --- structural mechanics --- combat systems

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Throughout the years, human kind has been looking for ways to improve previous designs. Improvements are made in order to achieve more precise results, increase efficiency, increase productivity, save energy, being greener, save money and staying competitive. In ship design, optimization is also an important procedure to be considered, it can lead to decreasing construction and operational costs, fuel consumption, greenhouse gases emission, increase cargo capacity and overall efficiency.
This work studies the influence of the web frame spacings and longitudinal stiffeners spacings on the weight of the cargo hold of a crude oil tanker. The least weight is desired. In order to analyse the weight of the cargo hold of the vessel, the scantling of five spacings of web frames are calculated. The cargo hold will always have the same length, and the swash bulkhead will remain always in the middle of the cargo hold, in the longitudinal direction. After finding the least weight of the five different spacings of web frames, the spacings of the longitudinal stiffeners are changed five times and the option with the least weight is selected.
The weight of all the scantlings calculated with the help of Nauticus Hull is then compared, considering that the web frames and bulkheads did not suffer any change in weight.

ship design --- crude oil tanker --- Optimization --- Ingénierie, informatique & technologie > Ingénierie mécanique

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In a crucial shift within posthumanistic media studies, Bernhard Siegert dissolves the concept of media into a network of operations that reproduce, displace, process, and reflect the distinctions fundamental for a given culture. Cultural Techniques aims to forget our traditional understanding of media so as to redefine the concept through something more fundamental than the empiricist study of a medium’s individual or collective uses or of its cultural semantics or aesthetics. Rather, Siegert seeks to relocate media and culture on a level where the distinctions between object and performance, matter and form, human and nonhuman, sign and channel, the symbolic and the real are still in the process of becoming. The result is to turn ontology into a domain of all that is meant in German by the word Kultur.Cultural techniques comprise not only self-referential symbolic practices like reading, writing, counting, or image-making. The analysis of artifacts as cultural techniques emphasizes their ontological status as “in-betweens,” shifting from firstorder to second-order techniques, from the technical to the artistic, from object to sign, from the natural to the cultural, from the operational to the representational.Cultural Techniques ranges from seafaring, drafting, and eating to the production of the sign-signaldistinction in old and new media, to the reproduction of anthropological difference, to the study of trompe-l’oeils, grids, registers, and doors. Throughout, Siegert addresses fundamental questions of how ontological distinctions can be replaced by chains of operations that process those alleged ontological distinctions within the ontic.Grounding posthumanist theory both historically and technically, this book opens up a crucial dialogue between new German media theory and American postcybernetic discourses.

Cultural Techniques. --- Posthumanities. --- anthropological difference. --- communion. --- doors. --- eating rituals. --- evil eye. --- gaze. --- graphic operations. --- grid. --- materialities of communication. --- media. --- practices. --- ship design. --- subject constitution. --- trompe-l’oeil.

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Shipping --- Safety measures --- Environmental aspects --- Marine shipping --- Marine transportation --- Maritime shipping --- Ocean --- Ocean traffic --- Ocean transportation --- Sea transportation --- Shipping industry --- Water transportation --- Communication and traffic --- Marine service --- Transportation --- Merchant marine --- Economic aspects --- Shipping. --- Safety measures. --- Environmental aspects. --- ship design --- navigation --- maritime security --- marine accident risk assessment --- marine pollution --- port management

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This book presents the papers accepted into the Special Issue “Stability and Seakeeping of Marine Vessels” and includes nine contributions to this Special Issue published in 2020. The overall aim of the collection is to improve knowledge about the most relevant and recent topics in ship stability and seakeeping. Specifically, the articles cover a wide range of topics and reflect the recent scientific efforts in the 2nd generation intact stability criteria evaluation and modelling of the ship dynamics assessment in intact or damaged conditions. These topics were investigated mainly through direct assessments performed both via numerical methods and tools, and experimental approaches. The book is addressed to individuals from universities, research organizations, industry, government agencies and certifying authorities, as well as designers, operators and owners who contribute to improved knowledge about “stability and seakeeping”.

URANS --- VOF --- overset mesh --- side damage --- bottom damage --- flooding process --- motion response --- nonlinear steady flow --- desingularized Rankine panel method --- forward speed --- radiation and diffraction --- adaptive weather routing --- Seakeeping Performance Index --- route optimization --- Dijkstra algorithm --- Cummins equations --- vertical motions assessment --- time domain simulations --- experimental seakeeping --- hard chine displacement hull form --- second generation intact stability criteria --- operational guidance --- operational limitations --- vulnerability levels --- direct stability assessment --- Ro-Ro ferry --- coastal patrol ship (CPS) --- full-scale seakeeping trials --- ship design --- barge platform --- zero-pressurized air cushion --- hydrodynamic performance --- boundary element method --- container ship --- added resistance in waves --- sea states --- potential flow theory --- variation of ship characteristics --- strip theory --- BEM --- RANS --- regular wave --- seakeeping --- n/a