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LIGHT AND MEDIUM PROTECTION FOR SMALL NAVAL VESSELS GUARANTEES THEIR HIGH PERFORMANCE AND SAFETY DURING THE GUARD DUTIES. POLYMER COMPOSITE SHIELDING LAYERS ON THE HULL PROVIDE AN ULTRA-LIGHT AND POWERFUL PROTECTION AGAINST MAINLY OFF-SHORE AND BORDER THREATS. ULTRA HIGH MOLECULAR WEIGHT POLYETHYLENE WHICH IS PRODUCED UNDER THE COMMERCIAL NAME OF DYNEEMA® HB25 PROVIDES SUPERIOR MECHANICAL PROPERTIES. IN THIS STUDY, A PROTECTION SHIELDS FABRICATED FROM DYNEEMA HB25 FIBERS HAVE BEEN UTILIZED AS AN ADD-ON LAYERS ON THE COAST GUARD BOAT HULL. FINITE ELEMENT ANALYSES HAVE BEEN COMPANIED WITH USING CHOCRON&RSQUO;S MODEL. TWO STANDARDS OF GUN-FIRE WERE EMPLOYED AND VARIOUS THICKNESSES OF THE COMPOSITE LAYERS WERE EXAMINED BY BALLISTIC IMPACTS TO ACHIEVE AN OPTIMUM THICKNESS. FINALLY, NUMERICAL SIMULATIONS RESULTS COMPARED WITH EXPERIMENTS AND REVEALED A GOOD CONSISTENCY.
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