<p>Submarine designs have traditionally been evolutionary, with each new design being more capable than the last. Issues like speed, depth, and combat/weapons systems have dominated the design process because of concerns with the increasing capability of Soviet submarines. Only cursory attention has been paid to affordability. As a result, the SEAWOLF submarine is estimated to cost approximately twice as much as an improved-LOS ANGELES Class submarine (its predecessor).</p> <p> The combination of a reduced Defense Department budget and increased unit costs is projected to result in an Attack Submarine force level of less than 40 ships over time as opposed to current force levels of 90-100 ships. The Navy has on occasion stated that 60 submarines is the minimum needed to meet its mission requirements, which have changed with the decrease in the Soviet threat. Accordingly, the current Navy focus is to explore ways to reduce unit submarine costs to less than half of SEA WOLF.</p> <p> This project will examine the submarine from a Life Cycle Cost perspective starting with the definition of need, mission definition and requirements, trade-off analysis and cost allocation all resulting in a conceptual submarine design that meets the cost target of 50 percent for acquisition and 75 percent for operations and maintenance relative to the SEA WOLF submarine program.</p> / Master of Science

A preliminary design of a local area network for a submarine overhaul facility is developed using System Engineering concepts. SOFLAN, the Submarine Overhaul Facility Local Area Network, is necessary to provide more timely and accurate information to submarine overhaul managers in order to decrease the overhaul time period and become more competitive. The network is a microcomputer based system following the Ethernet and IEEE 802.3 standards with a server .. client architecture. SOFLAN serves thirty five users at various offices and overhaul facilities throughout the shipyard. The network provides a medium to transmit information between and across various organizations. Applications resident on the network include a database management system, file transfer, word processing and electronic mail. SOFLAN replaces the existing manual systems' currently is use at the shipyard. The system life cycle is twelve years from development to phase-out with a cost over the entire life cycle of approximately two million dollars. / Master of Engineering

The United States Navy has concentrated the majority of its Surface Anti Submarine Warfare (ASW) capability in systems that are designed to exploit the specific acoustic environment of the open ocean. The new priorities are the littoral threat of mined harbors, gulfs, bays, and coastal areas and of coastal patrolling diesel submarines operating in a familiar, although more complex environment. The Naval operational requirements are to exercise control of threat platforms at ranges greater than the threat's weapon range capability and to provide defense against mobile (torpedoes) and immobile (mines) weapons. The United States' continued intervention in small skirmishes around the world requires an active sonar system that can perform the roles of shallow water and small object avoidance. An engineering approach to develop the new sonar system that can meet the defined operational requirements is needed. The system will be the first mission critical combat system built from a majority of COTS components in the USN inventory and will provide small object avoidance and shallow water capabilities to combatants where none previously existed. / Master of Science

Thesis (Ocean E)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1980. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING. / Includes bibliographical references. / by Joseph Anthony Carnevale, Jr. / Ocean E

Este trabalho apresenta um estudo sobre os recursos de análise estrutural disponíveis para submersíveis, sugere um critério de projeto estrutural próprio e desenvolve critérios de análise estrutural de submersíveis, após a fase de construção. No estudo dos recursos disponíveis é apresentado e analisado o atual nível de conhecimentos neste campos, a partir do levantamento de informações, muitas vezes restritas e confidenciais. Um critério de projeto é desenvolvido a partir de dados dispersos na bibliografia consultada, aos quais foram adicionados itens resultantes da experiência do autor. Os critérios de análise de submersíveis já construídos são desenvolvidos a partir de modelos analíticos ou de elementos finitos. Nestes, utiliza-se a vantagem da estrutura já estar fabricada, e portanto ser possível a obtenção de informações, que a nível de projeto necessitavam ser admitidas. São ainda desenvolvidos critérios para análise de resultados, com enfoque especial à avaliação de regiões estruturais que necessitem ser modificadas. Ao final são apresentadas as principais conclusões do trabalho e ressaltada a necessidade da continuidade das pesquisas que aprofundem vários aspectos levantados ao longo do texto. / The aim of this thesis work is three fold: to present a comphreensive study on structural analysis tools for submersible vehicles, to introduce a design criteria for new vessels and to develop methods for structural checkings for operating submersibles. In the first part, several data available at present time are discussed and analysed, although many of them are still considered either restricted or even confidential. Based on those data and on author\'s experience a design criteria is developed. Finally, the methods for analyzing operating vessels are obtained, starting from analytical models and also by using the finite element method approach. Those methods are more feasible from the stand point of final results, since all necessary data for the analysis are available. Within this context, the methods for analyzing operating submersibles are also very useful to evaluate structural parts which need either repair work or even modifications to face any new operating condition.

The purpose of this study was to describe the investigation of the Mica shipwreck. The objectives of the investigation, as identified by nautical archaeologists from the United States Minerals Management Service and the Nautical Archaeology Program at Texas A&M University, include determining the extent and limits of the wreck site, acquisition of diagnostic artifacts to identify the temporal period of the shipwreck and its mission at the time of loss, to identify the type of ship and its country of origin, and quantify the relationship between the vessel's construction and function. The manuscript contains a thorough analysis of the equipment and approach used by archaeologists during the excavation. The manuscript also briefly explores the use of metallic ship sheathing during the eighteenth and nineteenth centuries, focusing specifically on the pure copper sheathing found on the Mica wreck. Sheathing from numerous contemporary vessels will be analyzed and compared to the Mica shipwreck sheathing.

Thesis (M.Eng.)--Memorial University of Newfoundland, 2001. / Bibliography: leaves 94-96.

The purpose of this study was to describe the investigation of the Mica shipwreck. The objectives of the investigation, as identified by nautical archaeologists from the United States Minerals Management Service and the Nautical Archaeology Program at Texas A&M University, include determining the extent and limits of the wreck site, acquisition of diagnostic artifacts to identify the temporal period of the shipwreck and its mission at the time of loss, to identify the type of ship and its country of origin, and quantify the relationship between the vessel's construction and function. The manuscript contains a thorough analysis of the equipment and approach used by archaeologists during the excavation. The manuscript also briefly explores the use of metallic ship sheathing during the eighteenth and nineteenth centuries, focusing specifically on the pure copper sheathing found on the Mica wreck. Sheathing from numerous contemporary vessels will be analyzed and compared to the Mica shipwreck sheathing.

Thesis (M.S. in Operations Research) Naval Postgraduate School, March 1995. / Thesis advisor(s): J. N. Eagle. Includes bibliographical references. Also available online.

Este trabalho apresenta um estudo sobre os recursos de análise estrutural disponíveis para submersíveis, sugere um critério de projeto estrutural próprio e desenvolve critérios de análise estrutural de submersíveis, após a fase de construção. No estudo dos recursos disponíveis é apresentado e analisado o atual nível de conhecimentos neste campos, a partir do levantamento de informações, muitas vezes restritas e confidenciais. Um critério de projeto é desenvolvido a partir de dados dispersos na bibliografia consultada, aos quais foram adicionados itens resultantes da experiência do autor. Os critérios de análise de submersíveis já construídos são desenvolvidos a partir de modelos analíticos ou de elementos finitos. Nestes, utiliza-se a vantagem da estrutura já estar fabricada, e portanto ser possível a obtenção de informações, que a nível de projeto necessitavam ser admitidas. São ainda desenvolvidos critérios para análise de resultados, com enfoque especial à avaliação de regiões estruturais que necessitem ser modificadas. Ao final são apresentadas as principais conclusões do trabalho e ressaltada a necessidade da continuidade das pesquisas que aprofundem vários aspectos levantados ao longo do texto. / The aim of this thesis work is three fold: to present a comphreensive study on structural analysis tools for submersible vehicles, to introduce a design criteria for new vessels and to develop methods for structural checkings for operating submersibles. In the first part, several data available at present time are discussed and analysed, although many of them are still considered either restricted or even confidential. Based on those data and on author\'s experience a design criteria is developed. Finally, the methods for analyzing operating vessels are obtained, starting from analytical models and also by using the finite element method approach. Those methods are more feasible from the stand point of final results, since all necessary data for the analysis are available. Within this context, the methods for analyzing operating submersibles are also very useful to evaluate structural parts which need either repair work or even modifications to face any new operating condition.