《如何建造玻纤船》.pdfVIP

BASIC FIBREGLASS BOAT BUILDING This technical brief attempts to set out the basic construction techniques as well as the material, equipment, infrastructure, skills and labour requirements necessary to build fibreglass fishing crafts suitable for use in Sri Lanka’s coastal fisheries industry. Introduction As a material for boat building, fibreglass has gained in popularity over wood and metal in both developed and developing countries, mainly because of the relative simplicity of construction, the ability to produce many identical hulls from a single mould, and the ease of maintenance of the boats themselves. Fibreglass boats are completely watertight, rot-proof and resistant to borers. Disadvantages of fibreglass stem from the health risks associated with inhalation of fibre dust during construction, and the fact that the boats are slow to degrade and disposal at the end of their life is difficult. Fibreglass is a term used to describe Fibre Reinforced Plastic FRP , a material consisting of glass fibre impregnated with resin. Typically, a hardwearing surface is created with the use of a gel coat, strengthened by layers of fibreglass mat impregnated with resin. The required strength is achieved either by using several layers of mat or by using a thicker gauge of mat. Credit: Practical Action Materials and equipment The key to producing high quality boats is a good mould - a mirror image of the finished hull, which is also a fibreglass construction cast from either a plug, which is wooden replica of a hull, or the hull of an existing boat. In Sri Lanka, it is almost always an existing hull that is used to create the mould. Once the mould is created, it can be used to build hundreds of boats, which will have precisely the same shape as the original boat or plug used to create the mould. Therefore, it is very important that a good boat with the perfect hull shape is selected for this purpose. The better the plug, the better the mould and all