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    <title>Transport Research International Documentation (TRID)</title>
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    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
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    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
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      <title>MOORING DYNAMICS: COMPUTER MODELS AND EXPERIMENTS AT A SIXTY FOOT SCALE</title>
      <link>https://trid.trb.org/View/162149</link>
      <description><![CDATA[The U.S. Navy Civil Engineering Laboratory is conducting a series of dynamic cable experiments in order to evaluate computer models of cable systems used in the ocean. The results of an experiment using 60 foot cables are compared to two computer simulations in this report. Other experiments at scales of six feet and 2,500 feet have been performed. Three cases from the experiment conducted in the hydroballistics tank of the Naval Surface Weapons Center in 1976 are compared to the SNAPLOAD and SEADYN computer models. Two of the runs simulate the anchor-last deployment of a mooring; the third shows the relaxation of a mooring displaced laterally, then released. The quality of the experimental data is evaluated by comparing each case to the static, elastic catenary equations at the start and finish of each run. The measured positions of points along the static catenaries are found typically to agree with the catenary calculations within 1 to 2 percent of the cable length. Tension measured at the fixed end typically agrees with the calculated value within about 12 percent.]]></description>
      <pubDate>Thu, 19 Nov 1981 00:00:00 GMT</pubDate>
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      <title>A FORTRAN IV PROGRAM FOR COMPUTING THE STATIC DEFLECTIONS OF STRUCTURAL CABLE</title>
      <link>https://trid.trb.org/View/14074</link>
      <description><![CDATA[DESADE is a Fortran 4 program for computing the current-induced static deflections of Structural Cable Arrays. As dimensioned, the program can handle arbitrarily configured arrays of up to 22 cables. The cables can be electromechanical wire rope, or synthetic. Any number of discrete devices (buoyancy elements, current meters, tensiometers, etc.) can be incorporated in the array. An option for parametric studies is included in the program, as is an option for incorporating arbitrary current fields. As written, DESADE should compile on most Fortran 4 compilers with Boolean algebra capabilities. (Author) Portions of this report are not fully legible.]]></description>
      <pubDate>Mon, 25 Mar 1974 00:00:00 GMT</pubDate>
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      <title>ENGINEERING ANALYSIS OF PERFORMANCE FACTORS FOR SUBSURFACE MOORINGS IN A DEEP-SEA ENVIRONMENT</title>
      <link>https://trid.trb.org/View/14380</link>
      <description><![CDATA[Analysis of various taut, subsurface, deep moorings in a high-shear current are summarized. Wire rope, nylon, and Fiber-B lines are compared, as well as the effects of distributed buoyancy and enclosing fairing. Fiber-B is potentially better than steel wire. Fairing has a stronger effect. Both Fiber-B and fairing pose practical problems. Vertical deflections of 5% of depth are obtainable. Deflections of 1% or less require extraordinary measures. (Author)]]></description>
      <pubDate>Mon, 25 Mar 1974 00:00:00 GMT</pubDate>
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      <title>THE CONFIGURATION AND LOADING OF A TORSIONALLY ELASTIC FAIRED CABLE</title>
      <link>https://trid.trb.org/View/14347</link>
      <description><![CDATA[A mathematical model for the equilibrium configuration and tension for a flexible, faired cable with torsional elasticity in a uniform stream is presented. The differential equations are derived and a numerical integrating program for solving the initial value problem thus posed is given in the BASIC computer language. A sample problem is solved and discussed. (Author)]]></description>
      <pubDate>Tue, 12 Mar 1974 00:00:00 GMT</pubDate>
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      <title>ANCHOR-LAST DEPLOYMENT PROCEDURE FOR MOORING</title>
      <link>https://trid.trb.org/View/10639</link>
      <description><![CDATA[The anchor-last mooring procedure is investigated in order to determine the transient forces in the mooring line and the velocities of the anchor.  Transient forces were determined and the results showed that no severe snap loads occurred for the cases investigated.  In addition, it was found that the vertical velocity of the anchor can be small as it approaches impact with the floor of the ocean.  Both extensible (nylon and dacron) and inextensible (steel wire rope) lines were investigated.  Lumped mass numerical models were developed for both cases.  For the extensible line case the equations of motion were determined for each mass from Newton's Second Law, and they were integrated using a second order predictor-corrector integration technique. Hamiltonian techniques were used to determine the equations of motion for the inextensible line.  The predictions from the numerical models show the line tensions and positions as a function of time. (Author)]]></description>
      <pubDate>Thu, 31 Jan 1974 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/10639</guid>
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      <title>EVALUATION OF LONG TERM DEEP SEA EFFECTS ON MOORING LINE COMPONENTS</title>
      <link>https://trid.trb.org/View/9654</link>
      <description><![CDATA[The interpretation of environmental deterioration that occurs in oceanographic buoy systems is discussed. These single point taut-moored systems are used for the placement of instruments for long term measurements of oceanographic and meteorological data. A number of moorings have been lost necessitating an analysis of all components in the mooring line.  Systematic examination of retrieved components has indicated the presence of corrosion at all stages in the mooring from the surface buoy to the anchor. This includes the various instrument housings and attachments, the mooring line and its terminations, and the interconnecting hardware such as shackles, links and chain. Pitting type corrosion, crevice corrosion, galvanic incompatibility, have been identified and design changes made.  (Author Modified Abstract)]]></description>
      <pubDate>Thu, 18 Oct 1973 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/9654</guid>
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