Elektroniske og akustiske nav.

The book provides a thorough review of all navigation systems used on modern ships, including advanced positioning systems used during offshore operations and on research vessels. The book is primarily aimed at students in nautical studies at maritime colleges and technical vocational schools. It covers all instruments described in the STCW Convention and serves as a reference work for ship's crew and others working with navigation systems. An appendix explains how to log into an online navigation system ("Distributed Navigation Lab"). The book has four parts: Part 1 presents basic geodesy, site line theory and all relevant radionavigation systems. Most emphasis is placed on satellite navigation systems (GNSS), as well as systems to improve their performance. Great emphasis has been placed on the systems' capacities and limitations. Integration of instruments and issues surrounding this are also described here. Part 2 describes radar systems, AIS and electronic chart systems (ECDIS). This also includes a description of techniques for using the systems in a safe and efficient way, including ARPA and VTS systems. Part 3 deals with all relevant compass systems, including variants of magnetic compass, gyro and LASER compass. The systems to which these components are connected are also described. Inertial navigation, autopilot and VDR are therefore discussed in this section. A relatively large space is devoted to the description of DP systems. A small chapter deals with the sextant and dial, which can be used to examine the accuracy of the various types of compass. Part 4 is entirely devoted to the underwater systems. In addition to a description of sonar, sonars, HPR and speedometers, a thorough introduction to underwater acoustics is given. Several areas of use within fisheries and marine research are described. Furthermore, a thorough review of offshore applications and mapping is carried out. For maritime studies, it is recommended to read this book in conjunction with two other titles by the same author: Forwarding of ships with navigation control (2021) and Navigation for maritime studies (2020)