The publication is intended to provide the reader with a sound basic knowledge of ferrocement and its potential and limitations in boatbuilding. It is assumed that those people using this document are already familiar with the construction of small fishing boats. The sections cover all stages of building a small ferrocement fishing craft from design and lofting requirements and techniques, to repairs and the preparation and painting of a ferrocement hull. Information is presented on site, workshop, equipment, tools and launching systems; materials used in construction; testing and practice of construction materials; construction of a ferrocement hull; repairs and joints in ferrocement; preparing and painting a ferrocement hull; the requirements specific to ferrocement boat construction and ferrocement/timber fitting out; and guidelines available for building a boat to classification standards. The annex contains costings, and drawings of a 12.8 m ferrocement trawler built in India with FAO technical assistance; general arrangement, hull construction, lines plans, frames, and superstructure are covered.