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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>
    <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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    <item>
      <title>DIRECTORY OF WORLDWIDE DREDGE FLEETS AND THEIR SUPPLIERS</title>
      <link>https://trid.trb.org/View/388650</link>
      <description><![CDATA[The fleet section of this directory is organized by country, and within each country by dredge operator. For each dredge, the capacity, hp, and type are shown. A listing of dredging industry suppliers follows, arranged first by product and then alphabetically in an address list.]]></description>
      <pubDate>Thu, 21 Jul 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/388650</guid>
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      <title>OPTICAL GUIDANCE SYSTEM INSTALLED IN NEW YORK HARBOR</title>
      <link>https://trid.trb.org/View/391020</link>
      <description><![CDATA[The U.S. Coast Guard has completed the installation in New York Harbor of the Inogon Leading Mark, a single station, short range optical guidance system that directs vessels safely and accurately through narrow channels.  The Leading Mark System is based upon an optically safe visual effect caused by changes in the pilot's angle of vision. Light projected through two closely spaced superimposed lens gratings on the face of the beacon create an opaque black visual pattern on a background.  So long as the ship is in the center of the channel, the pilot will see a single black vertical line in the center of the Inogon Leading Mark.  If the ship strays to the port or starboard of the centerline, the pilot will see a pattern of arrows pointing in the direction required to correct the position.  Inogon Leading Marks have no moving parts or electronic components and operate automatically without requiring any onboard equipment.]]></description>
      <pubDate>Thu, 21 Jul 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/391020</guid>
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      <title>BOSKALIS APPLIES VARIED EXPERIENCE TO DREDGE MINING</title>
      <link>https://trid.trb.org/View/391797</link>
      <description><![CDATA[The activities of the Dutch dredging contractor, Boskalis Westminster, are briefly described, including its research activities in tarsand and sandstone dredging, ocean mining of manganese nodules, and other areas.]]></description>
      <pubDate>Thu, 21 Jul 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/391797</guid>
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      <title>ELECTRONIC DIGGING GAUGE IMPROVES DREDGING CAPABILITIES</title>
      <link>https://trid.trb.org/View/395857</link>
      <description><![CDATA[The "Levelator Depth Indicator," an electronic digging gauge manufactured by the Levelator Corporation, Bellevue, Washington, is described. The Dredge Division, Port of Portland has found the Levelator so accurate and so effective in achieving dredging economies that it has discontinued use of the mechanical ladder digging board in use since 1891.]]></description>
      <pubDate>Thu, 21 Jul 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/395857</guid>
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      <title>INDISPENSABLE TOOLS FOR MONITORING DREDGING AT ZEEBRUGGE</title>
      <link>https://trid.trb.org/View/396216</link>
      <description><![CDATA[Overseas Decloedt & Fils S.A., Brussels, Belgium, has utilized computers and electronics to optimize various types of dredging. Its high-tech survey system, Navitracker, enables continuous in-situ measurement of sediment density for monitoring maintenance dredging and for determining the navigable depth in muddy areas such as estuaries or other harbor access channels. Dredging is monitored by several innovative instruments such as the company's videoplotter and Suction Tube Position Monitors.  These optimization systems are described in the context of their use during the extension of the new Outer and Inner Harbor of Zeebrugge, Belgium.]]></description>
      <pubDate>Thu, 21 Jul 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/396216</guid>
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      <title>CUTTER SUCTION DREDGE AUTOMATION: THE STATE OF THE ART</title>
      <link>https://trid.trb.org/View/396217</link>
      <description><![CDATA[The purpose of automating cutter suction dredging is to reduce the cost per unit of produced soil quantity. The state of the art in the field is reviewed.]]></description>
      <pubDate>Thu, 21 Jul 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/396217</guid>
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    <item>
      <title>EXPLORING FOR OFFSHORE COAL: UK FIRMS TAP VALUABLE SUBSEA RESOURCE</title>
      <link>https://trid.trb.org/View/396414</link>
      <description><![CDATA[Offshore drilling has been an important tool in the exploration for coal seams off the northeast coast of England. Several ships engaged in such drilling are described and illustrated, as is their operation.]]></description>
      <pubDate>Thu, 21 Jul 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/396414</guid>
    </item>
    <item>
      <title>CASE HISTORIES OF HYDRAULIC PIPELINE CUTTERHEAD DREDGE UTILIZATION</title>
      <link>https://trid.trb.org/View/396644</link>
      <description><![CDATA[In their desire to maintain their competitive edge, dredging contractors have, to a degree, limited the publication of information about actual dredge performance. The author's company had the opportunity to analyze performance in detail. The results, presented in this article, have the needed quantitative focus and can contribute to the improvement of dredge operation during project excavation.]]></description>
      <pubDate>Thu, 21 Jul 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/396644</guid>
    </item>
    <item>
      <title>AUTOMATION OF DATA RECORDING &amp; PROCESSING FOR DREDGING SURVEYS</title>
      <link>https://trid.trb.org/View/396748</link>
      <description><![CDATA[This article is not a general one about the automation of measurements.  It rather describes a particular survey system that exists within the Royal Boskalis Westminster Group, UK. The system was developed from ideas of Cristiaan Huygens Laboratory and Osiris Seaway, runs on Hewlett-Packard desktop equipment, and, in contrast to being a stable "black box," is still being changed and improved.]]></description>
      <pubDate>Thu, 21 Jul 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/396748</guid>
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      <title>THE CORPS OF ENGINEERS NATIONAL DREDGING PROGRAM: YESTERDAY, TODAY, AND TOMORROW</title>
      <link>https://trid.trb.org/View/397242</link>
      <description><![CDATA[This article begins by reviewing the major changes between 1968 and 1988 in the National Dredging Program of the U.S. Army Corps of Engineers.  Chief among these changes is the Corps' relationship with those involved in the program: industry, environmentalists and users. The article then describes a six-year Dredging Research Program begun in 1988, and designed to focus on five main areas: materials, mechanics, monitoring, management and technology transfer. Finding beneficial uses for dredged material is also a high priority. The second half of the article is dedicated to examining how the workload in the National Dredging Program has changed over the years; what can be expected in the near term; and the preparedness of the industry--in the Corps' view--to do the job.]]></description>
      <pubDate>Thu, 21 Jul 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/397242</guid>
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    <item>
      <title>COMBATTING ABRASION IN THE DREDGING INDUSTRY</title>
      <link>https://trid.trb.org/View/397388</link>
      <description><![CDATA[A process developed by Triten Corp., Houston, Texas, to cope with the problem of wear, is described. Called the Bulkwelding Process, and patented, it provides an economical means of applying an abrasion-resistant weld overlay to surfaces subject to wear. It can also be used to restore worn components to their original dimensions.  Applications of the process in the dredging industry are described.]]></description>
      <pubDate>Thu, 21 Jul 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/397388</guid>
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      <title>NAVIGATION DISPLAY AND LOGGING SYSTEM INSTALLED ON ESSAYONS</title>
      <link>https://trid.trb.org/View/397855</link>
      <description><![CDATA[The Seattle-based facility of the French-headquartered Oceano Group has installed a PC-based navigation and database management system onboard the hopper dredge ESSAYONS. Results have exceeded the expectations of the dredge's owner, the Portland District of the U.S. Army Corps of Engineers. The integrated system, called MASTERNAV, has the entire bathymetric database for the Portland District stored on the hard disk of the Compac 286 Deskpro computer being used. MASTERNAV combines the databases of previously gathered hydrographic surveys and their geodetic monument sites, plus channel boundaries and centerlines, with the real-time navigation sensors such as the gyro, speed log and radio navigation. Its features and applications are described.]]></description>
      <pubDate>Thu, 21 Jul 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/397855</guid>
    </item>
    <item>
      <title>AUTOMATIC SYSTEM DEVELOPED FOR CUTTER SUCTION DREDGES</title>
      <link>https://trid.trb.org/View/397884</link>
      <description><![CDATA[A microcomputer-based system developed by Mitsubishi Heavy Industries to simplify the operation of cutter suction dredges is described. The system, known as MACS-C (Mitsubishi Automatic Dredging Control System for Cutter Suction Dredges), has been installed on three new 4,000 hp dredges delivered to a contractor in the People's Republic of China.]]></description>
      <pubDate>Thu, 21 Jul 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/397884</guid>
    </item>
    <item>
      <title>IMPROVING DREDGE EFFICIENCY THROUGH AN INTEGRATED PILOTING AND LOGGING SYSTEM</title>
      <link>https://trid.trb.org/View/398041</link>
      <description><![CDATA[Dredging efficiency can be substantially improved with the use of an integrated piloting, navigation, and production graphics display and logging system. Such a system displays position and track in a channel, surrounding hydrographic data, and the status of critical production systems. A microcomputer-based system of this type was developed by Eastport International and placed aboard the Corps of Engineers' dredge ESSAYONS in September 1986, for a three-week demonstration. Besides providing useful graphic displays, it generated magnetic logs of the entire operation, documenting the locations of dredge operations and what material was removed or deposited. This paper presents the techniques and approaches used in the system and discusses the observed and expected results of using it aboard hopper dredges.]]></description>
      <pubDate>Thu, 21 Jul 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/398041</guid>
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    <item>
      <title>BILBERG 1 FEATURES AUTOMATED DREDGING SYSTEM</title>
      <link>https://trid.trb.org/View/398042</link>
      <description><![CDATA[BILBERG 1, a new 34.5-inch cutter suction dredge, is described. Built by the German shipyard Orenstein & Koppel for Bilfinger + Berger Dredging, it features a microprocessor-based system for automated dredging. The system coordinates data from a variety of instruments to maximize production and efficiency.]]></description>
      <pubDate>Thu, 21 Jul 1994 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/398042</guid>
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