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HullMaterial

49 bytes added, 19:54, 2 March 2016
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→‎Hull Material
In general fibreglass must be three times the thickness of steel for the same tensile and compressive strength but has a 40% lesser weight. Thus fibreglass is better suited than steel to a semi-displacement trawler or a smaller displacement trawler where steel might be too heavy.
<table width="7080" border="1"><tr><th colspan="5">Comparison of Strength<br />Fibreglass vs.Steel</th></tr><tr> <th>Material</th> <th>Specific Weight<br />lb/cu.ft</th> <th>Tensile Strength<br />kN/m<sup>2x102</sup>x10</th> <th>Compressive Strength<br />kN/m<sup>2</sup>x10</th> <th>Elastic Modulus<br />kN/m<sup>2x102</sup>x10</th></tr><tr> <td>Fibreglass</td> <td>94</td><td>100</td> <td>100</td><td>6</td></tr><tr> <td>Steel</td> <td>485</td> <td>210</td> <td>190</td> <td>200</td></tr><tr><td colspan="5">Source: http://www.fao.org</td></tr>
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