01-08-2017, 02:36 PM
The propeller is the most important technical element in a fishing vessel. Its design and specifications have a direct influence on fuel efficiency. Poor propeller design is the single most frequent contributor to fuel inefficiency. This section presents some of the basic concepts of propeller design and installation, and Annex 4 discusses a very quick and easy method to check the suitability of an installed propeller. It is important to note throughout this section that the design of the propeller is not simple, especially in the case of trawlers, in which the technical specification should be entrusted to a qualified and experienced professional. Such assistance may be available through local representatives of propeller and engine manufacturers or, in some cases, the technical services of government fisheries extension programs.