en سازه کشتی Ship Structure مقاله پژوهشي Research Paper <span style="font-size:8pt"><span new="" roman="" style="font-family:" times=""><span style="font-size:11.0pt">The demand for high-speed crafts has grown rapidly due to their strategic importance and quick response capabilities. Governments prioritize their development through research and industry advancements. Designing a high-speed craft exceeding 60 knots requires significant time and cost. This study identifies key factors for optimizing speed and maneuverability through hull modifications, chine positions, indentations, propulsion systems, and initial trim adjustments. The sample craft was 3D scanned, and simulations were conducted using MAXSURF. The hull was modified and uniformly adjusted, followed by hydrostatic and hydrodynamic calculations.</span></span></span><br> <span style="font-size:8pt"><span new="" roman="" style="font-family:" times=""><span style="font-size:11.0pt">Findings indicate that achieving speeds above 60 knots require a minimum initial trim of 0.4&deg; at the transom. Proper hull line adjustments and equipment placement were essential. Additionally, with a safety factor of 1.25, the craft requires approximately 600 horsepower for the desired speed. These optimizations ensure efficient performance while minimizing costs.</span></span></span><br> &nbsp; ,High-speed craft,hydrostatics,maneuverability,fiberglass boat,trim angle 28 43 http://ijmt.ir/browse.php?a_code=A-10-8180-2&slc_lang=en&sid=1 Seyed Reza Samaei samaei@srbiau.ac.ir 10031947532846004362 10031947532846004362 No Assistant professor, Technical and Engineering Faculty, Science and Research Branch, Islamic Azad University, Tehran, Iran; samaei@srbiau.ac.ir Mohammad Asadian Ghahfarokhi m.asadian@srbiau.ac.ir 10031947532846004363 10031947532846004363 Yes Assistant professor, Department of Marine industries, Science and Research Branch, Islamic Azad University, Tehran, Iran; m.asadian@srbiau.ac.ir