The test results presented were obtained over a 9 month period at the Naval Electronics Laboratory Center at San Diego. The test objective was to assess the structural and other physical property characteristics of incoherent, plastic jacketed, glass fiber-optic cable types of current manufacture. Tests were conducted to evaluate the capabilities of these type products to sustain structural integrity and operability after subjection to test exposures simulating Naval shipboard environmental conditions. A total of 29 types of tests were performed utilizing over 200 fiber-optic cables. A major part of this task involved the development of diagnostic test techniques for the evaluation of the test induced cable property modifications. A final report detailing the fiber-optic cable performance obtained in this test program is available by writing to the Library, Naval Electronics Laboratory Center, San Diego, California 92152. The report is entitled "Fiber-Optic Cable Test Evaluation" and identified as NELC TR-1869.