{"id":982,"date":"1999-11-30T00:00:00","date_gmt":"1999-11-30T05:00:00","guid":{"rendered":"https:\/\/setsail.com\/?p=982"},"modified":"2015-10-16T12:15:22","modified_gmt":"2015-10-16T17:15:22","slug":"calculating-construction-weights","status":"publish","type":"post","link":"https:\/\/setsail.com\/calculating-construction-weights\/","title":{"rendered":"Calculating Construction Weights"},"content":{"rendered":"<div class=\"question\">\n<p class=\"Body\"> Dears Sirs, I have read your book Offshore Cruising Encyclopedia with great pleasure and have decided to go on with building a new alu boat, about 45 feet. From a local designer I have got a design plan, including the areas of the hull, deck, cockpit and cabintop (the complete outer skin). The builder I have contacted is calculating the building costs for the aluminium parts by kg. The weight of skin of the hull, deck, cockpit and cabintop should be 1800 kg, excluding the inside frameworks and tanks. Do you have a good guess about how much the complete aluminium-part of the boat will weigh? The builder claims it you be factor 1.5 = 2700 kg. Regards, Jan B. Hansen, Sailmaker <\/p>\n<\/div>\n<p><!--more--><\/p>\n<div class=\"answer\">\n<p class=\"Body\"> Hi Jan: I have always done a complete weight analysis, calculating the weights of every piece of hull structure as well as all the other fittings. If you don&#8217;t do the weight calcs in a thorough, detailed manner, both the weight and the vertical\/longitudinal centers of gravity will be wrong. There are simply too many types of weight to guess accurately. Your designer will have worked up a framing plan, and it is not that difficult to calculate the quantity of longitudinals, frames, floors, and miscellaneous brackets. Good Luck&#8211;Steve Dashew<\/p>\n<p class=\"Body\" align=\"center\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Dears Sirs, I have read your book Offshore Cruising Encyclopedia with great pleasure and have decided to go on with <a class=\"read-more\" href=\"https:\/\/setsail.com\/calculating-construction-weights\/\">&#8230;Read More<\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17,10],"tags":[],"class_list":["post-982","post","type-post","status-publish","format-standard","hentry","category-yacht-construction-forum","category-tech-talk"],"_links":{"self":[{"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/posts\/982"}],"collection":[{"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/comments?post=982"}],"version-history":[{"count":1,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/posts\/982\/revisions"}],"predecessor-version":[{"id":36479,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/posts\/982\/revisions\/36479"}],"wp:attachment":[{"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/media?parent=982"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/categories?post=982"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/setsail.com\/wp-json\/wp\/v2\/tags?post=982"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}