Systems Analysis of Amphibious Landing Craft: Comparisons of Preliminary Designs of Advanced Landing Craft

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Systems Analysis of Amphibious Landing Craft: Comparisons of Preliminary Designs of Advanced Landing Craft

J. I. Steinman / A. R. Grant / P. S. Jones / M. J. Nielsen

The report describes the procedures that were used to evaluate the preliminary designs of advanced landing craft as part of the Navy's Advanced Amphibious Landing Craft Program. The procedures were applied initially to more than 30 different existing and proposed landing craft, and complete analysis was made for five advanced craft after screening out marginal craft at each stage of the analysis. Measures of effectiveness used were Force-Time Effectiveness, Time to Deliver 200,000 sq ft of Vehicles Ashore, Marine Forces or Cargo Lost, Response Time, Mean Productivity per Craft by Type, and Mean Cargo Transfer Rates. Standoff distances of 5 and 25 nautical miles were used. The computer programs used in the analysis were provided by SRI and the Naval Weapons Laboratory. Data are presented bearing on the effectiveness of each type of craft and each craft mix. A description also is given of the SRI program GAMUT, which is a simulation covering much the same ground as the STS-2 package but with a great reduction in the level of detail that is considered. It provides the means of rapidly and cheaply changing the input conditions and operating procedures used in the simulation. Selected preliminary results of the GAMUT model are given. (Author)