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The Office of Naval Research has been sponsoring development of analytic tools for exploring the benefits of electric drive propulsion for naval vessels. RAND has performed an initial assessment to assist in this work. Researchers focused on developing a framework for assessing the different technologies for key components of electric propulsion, such as motors, generators, and power electronics, but did not assess specific alternatives. This documented briefing outlines the approach the authors developed for making such assessments (which uses modeling and Monte Carlo simulations), presents the quantitative methods they used to analyze the potential performance of various components, suggests how this information can be integrated to assess the affects on overall ship performance. The authors illustrate this by presenting performance metrics for several components and examining their effects on one key ship-level performance metric, ship power density for a notional electric-propulsion destroyer.

Ship propulsion, Electric --- Naval architecture --- Uncertainty --- Monte Carlo method

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With the continuous advancement of coastal, offshore, and deep-sea engineering construction (eg marine oil, gas, and mineral resource development, offshore wind power projects), associated studies on marine geological environments and hazards have also advanced in parallel. This book "Advances in Marine Engineering: Geological Environment and Hazards" is formed by a Special Issue (SI) that was organized by Prof. Xiaolei Liu from the Ocean University of China, Prof. Thorsten Stoesser from the University College London, and Dr. Xingsen Guo from the University College London to document research advances in the topics of marine engineering, including marine geological environments, marine geological hazards, marine engineering geology, marine hydrodynamics, marine fluid mechanics, and marine geotechnical engineering. The high-quality papers collected in this book involve many classic and innovative methodologies in this research field, including but not limited to analytical and statistical analyses, numerical simulations, laboratory testing, and marine surveys. The book represents the state-of-the-art in the latest research concepts, advanced methods, and data that will contribute greatly to the development of the field of marine geological environments and hazards.

Marine engineering --- Environmental aspects. --- Engineering, Marine --- Marine technology --- Naval engineering --- Engineering --- Naval architecture

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Naval architecture --- Marine engineering --- Architecture navale --- Mécanique navale --- Periodicals --- Périodiques --- Ocean engineering --- Marine engineering. --- Naval architecture. --- Ocean engineering. --- Deep-sea engineering --- Oceaneering --- Submarine engineering --- Underwater engineering --- Architecture, Naval --- Marine architecture --- Engineering, Marine --- Marine technology --- Naval engineering --- marine engineering --- ocean engineering --- naval architecture --- Engineering --- Marine resources --- Oceanography --- Architecture --- Shipbuilding --- Equipment and supplies --- Nautical influences --- Ships --- Design and construction

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Coastal engineering --- Marine engineering --- Engineering --- Coastal zone management --- Shore protection --- Marine engineering. --- Coastal engineering. --- Engineering, Marine --- Marine technology --- Naval engineering --- Naval architecture

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The Arsenal Ship acquisition program was unique in two respects: it represented a new operational concept for Navy weapon systems, and its management structure and process represented a significant departure from traditional military ship-building programs. The Arsenal Ship program was, in effect, an experiment; while the Navy envisioned an array of mission capabilities for the ship, it set the project budget as the single immovable requirement. In the end, political and financial constraints caused the program's cancellation. Nevertheless, its acquisition approach and technical innovations have already had--and will continue to have--significant influence on other Navy ship-building programs. The lessons learned from the Arsenal Ship program, applied to existing and planned systems, should more than recover the money spent on it.

Warships --- Shipbuilding --- Naval ships --- War-ships --- Government vessels --- Naval architecture --- Ships --- Armored vessels --- Navies --- Design and construction. --- United States. --- U.S. Navy --- Procurement. --- Weapons systems --- Costs.