<?xml version="1.0" encoding="UTF-8"?><marc:collection xmlns:marc="http://www.loc.gov/MARC21/slim">
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    <marc:controlfield tag="001">9.950438</marc:controlfield>
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    <marc:controlfield tag="008">250424e198904##nsca    ob   f000 0 eng d</marc:controlfield>
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      <marc:subfield code="a">CaOODSP</marc:subfield>
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      <marc:subfield code="a">eng</marc:subfield>
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      <marc:subfield code="a">D68-21/43-1989E-PDF</marc:subfield>
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      <marc:subfield code="a">Hally, David, </marc:subfield>
      <marc:subfield code="d">1954- </marc:subfield>
      <marc:subfield code="e">author.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="245" ind1="1" ind2="0">
      <marc:subfield code="a">POTFLO : </marc:subfield>
      <marc:subfield code="b">a suite of programs for calculating potential flow about ship hulls / </marc:subfield>
      <marc:subfield code="c">David Hally ; approved by L.J. Leggat.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="264" ind1=" " ind2="1">
      <marc:subfield code="a">Dartmouth, Nova Scotia : </marc:subfield>
      <marc:subfield code="b">Defence Research Establishment Atlantic = Centre de recherches pour la défense atlantique : </marc:subfield>
      <marc:subfield code="b">National Defence, Research and Development Branch = Défense nationale, Bureau de recherche et développement, </marc:subfield>
      <marc:subfield code="c">April 1989.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="300" ind1=" " ind2=" ">
      <marc:subfield code="a">1 online resource (ix, 32 pages) : </marc:subfield>
      <marc:subfield code="b">illustrations.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="336" ind1=" " ind2=" ">
      <marc:subfield code="a">text</marc:subfield>
      <marc:subfield code="b">txt</marc:subfield>
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      <marc:subfield code="a">computer</marc:subfield>
      <marc:subfield code="b">c</marc:subfield>
      <marc:subfield code="2">rdamedia</marc:subfield>
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    <marc:datafield tag="338" ind1=" " ind2=" ">
      <marc:subfield code="a">online resource</marc:subfield>
      <marc:subfield code="b">cr</marc:subfield>
      <marc:subfield code="2">rdacarrier</marc:subfield>
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    <marc:datafield tag="490" ind1="1" ind2=" ">
      <marc:subfield code="a">Technical memorandum ; </marc:subfield>
      <marc:subfield code="v">89/210</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="500" ind1=" " ind2=" ">
      <marc:subfield code="a">Digitized edition from print [produced by Defence Research and Development Canada].</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="504" ind1=" " ind2=" ">
      <marc:subfield code="a">Includes bibliographical references (page 30).</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="520" ind1="3" ind2=" ">
      <marc:subfield code="a">"The suite of programs POTFLO calculates the potential flow around ship hulls. It was created by rewriting the program suite EN967 which calculates the potential flow around bodies with lifting surfaces. POTFLO does not allow lifting surfaces but improves on EN967 in reliability, efficiency, portability, ease of use, and ease of modification. POTFLO also allows inclusion of an actuator disk to model the influence of a propeller, and corrections for the presence of the boundary layer. The potential flow is calculated using a first order panel method"--Abstract, page ii.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="546" ind1=" " ind2=" ">
      <marc:subfield code="a">Includes abstracts in English and French.</marc:subfield>
    </marc:datafield>
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      <marc:subfield code="a">Hulls (Naval architecture)</marc:subfield>
      <marc:subfield code="x">Computer programs.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="650" ind1=" " ind2="0">
      <marc:subfield code="a">Ships</marc:subfield>
      <marc:subfield code="x">Hydrodynamics</marc:subfield>
      <marc:subfield code="x">Computer simulation.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="650" ind1=" " ind2="6">
      <marc:subfield code="a">Carènes (Architecture navale)</marc:subfield>
      <marc:subfield code="x">Logiciels.</marc:subfield>
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    <marc:datafield tag="650" ind1=" " ind2="6">
      <marc:subfield code="a">Navires</marc:subfield>
      <marc:subfield code="x">Hydrodynamique</marc:subfield>
      <marc:subfield code="x">Simulation par ordinateur.</marc:subfield>
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    <marc:datafield tag="710" ind1="2" ind2=" ">
      <marc:subfield code="a">Defence Research Establishment Atlantic, </marc:subfield>
      <marc:subfield code="e">issuing body.</marc:subfield>
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    <marc:datafield tag="710" ind1="1" ind2=" ">
      <marc:subfield code="a">Canada. </marc:subfield>
      <marc:subfield code="b">Department of National Defence. </marc:subfield>
      <marc:subfield code="b">Research and Development Branch, </marc:subfield>
      <marc:subfield code="e">issuing body.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="830" ind1="#" ind2="0">
      <marc:subfield code="a">D.R.E.A. technical memorandum ;</marc:subfield>
      <marc:subfield code="v">89/210.</marc:subfield>
      <marc:subfield code="w">(CaOODSP)9.941838</marc:subfield>
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      <marc:subfield code="q">PDF</marc:subfield>
      <marc:subfield code="s">1.54 MB</marc:subfield>
      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2025/rddc-drdc/D68-21-43-1989-eng.pdf</marc:subfield>
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