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    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
    <docs>http://blogs.law.harvard.edu/tech/rss</docs>
    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
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      <title>Transport Research International Documentation (TRID)</title>
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      <title>NEW ANCHOR ARRANGEMENT</title>
      <link>https://trid.trb.org/View/66731</link>
      <description><![CDATA[A new anchor arrangement whereby the anchors are placed on deck, easily accessible for securing, cleaning, maintenance, and inspection is described.  At the upper part of the recess in the new anchor there is a cast fairlead, against which the anchors are stowed and where twin washing-down nozzles are fitted.  The recess terminates in a chain both when at anchor and with the anchors stowed.  The stopper is designed to withstand the braking load of the chain. The chain stopper is normally operated hydraulically, but is also provided with a mechanical securing arrangement.]]></description>
      <pubDate>Wed, 23 Feb 1977 00:00:00 GMT</pubDate>
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      <title>THE CEL 100K PROPELLANT ANCHOR - UTILIZATION FOR TANKER MOORINGS IN SOFT CORAL AT DIEGO GARCIA</title>
      <link>https://trid.trb.org/View/62716</link>
      <description><![CDATA[This report documents the design of the CEL 100K Propellant Anchor, and outlines the mooring requirements and designs as well as the procedures, equipment, and operations involved in installing the propellant anchors and connective gear for tanker moorings at Diego Garcia.  This successful installation demonstrated that this type of anchor can be used to advantage in Navy and other applications, particularly where uplift-resistance is desired or where effective anchoring is needed in a hard seafloor.  (Author)]]></description>
      <pubDate>Sun, 16 Jan 1977 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/62716</guid>
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      <title>A SCREW ANCHOR DRIVING ATTACHMENT</title>
      <link>https://trid.trb.org/View/17849</link>
      <description><![CDATA[A screw anchor driving attachment provides maneuverability and correct placement of an anchor as in holding down a pipeline in marshy ground.  It consists of an extension on a rotating column, and a guide for a rod, which, togehter with a pivot head, link, and anchor, is rotated by hydraulic cylinders before being driven into the ground.  The hydraulic cylinders and hydraulic motor are driven by a single pump and controlled by a sliding valve distributor.]]></description>
      <pubDate>Mon, 15 Jul 1974 00:00:00 GMT</pubDate>
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      <title>ANALYSIS OF THE TENSION LEG PLATFORM</title>
      <link>https://trid.trb.org/View/5150</link>
      <description><![CDATA[The tension leg platform is a type of moored stable platform whose buoyancy exceeds the weight.  The supplementary equilibrating downward force is supplied by tensioned vertical anchor cables; and heave, roll and pitch motions are suppressed.  A method is developed for predicting the forces in the mooring legs induced by wave action and platform motions in random and regular waves through the use of a linearized hydrodynamic synthesis technique.  Model experiments display good agreement with predictions.]]></description>
      <pubDate>Thu, 27 Sep 1973 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/5150</guid>
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      <title>JETTED-IN MARINE ANCHORS</title>
      <link>https://trid.trb.org/View/314</link>
      <description><![CDATA[Twenty-three lightweight anchors consisting of a 10-foot X 2 1/2-inch pipe with a metal cone welded at the tip end were emplaced and tested in twenty-five feet of water at Lameshur Bay, St. John, U. S. Virgin Islands.  The anchors were jetted into the coral sand bottom by forcing water through the pipe and out an aperture in the cone.  Two divers guided the anchors into the sediment using the jet of water to excavate the soil beneath the cone.  Four of the anchors were emplaced with a cement slurry to increase the holding power.  It was found that the emplacement procedures were straightforward and posed no problems to the divers. However, the injection of the cement slurry was very time- consuming due to numerous problems.  The pullout results and theoretical analysis showed the jetted anchors to be capable of developing 2,000 to 10,000 lbs holding capacities in the soil at the test site.  The holding capacity may be increased by increasing any of the following:  anchor cone diameter ( area ), emplacement depth, compaction of the overburden sediment, or use of a cement slurry.  Tests indicate that the use of these light weight jetted-in anchors may be of practical use where bottom tie-downs and light anchorages are required.  Further testing is recommended.  ( Author )]]></description>
      <pubDate>Sat, 25 Nov 1972 00:00:00 GMT</pubDate>
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      <title>THE PADLOCK ANCHOR - A FIXED-POINT ANCHOR SYSTEM</title>
      <link>https://trid.trb.org/View/169</link>
      <description><![CDATA[The objective of this study was to investigate the feasibility of combining propellant-activated embedment anchors and a structural frame with bearing pads to provide a fixed-point, deep ocean anchorage system.  The work was to include the conception, design, fabrication, and evaluation.  This report describes the resulting device, termed padlock, discusses its development, and documents the field tests and results.  Essentially the padlock is a tripodal frame terminating in 6-foot-diameter bearing pads that are locked to the sea floor through activation of 20,000-pound (nominal holding power) embedment anchors, one per bearing pad.  Shallow water tests demonstrated that the components are operationally compatible as a system and that the embedment anchors can be detonated singly or as a group.  A limited number of tests shows the reliability of the complete system to be low, mainly because of the performance of the embedment anchors.  (Author)]]></description>
      <pubDate>Mon, 30 Oct 1972 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/169</guid>
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