The objects of the Institute are to unite in one body those who are concerned with or who are interested in navigation and to further its development. Navigation is conceived as applying to locomotion of all kinds and is perceived as encompassing aspects of: command and control, psychology and zoology, operational research, risk analysis, theoretical physics, operation in hostile environments, instrumentation, ergonomics, fi nancial planning and law as well as electronics, astronomy,

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... , cartography and other subjects traditionally associated with navigation. The aims of the Institute are to encourage the creation and dissemination of knowledge through research and development, to co-ordinate information from all the disciplines involved, to provide a forum in which new ideas and new products can have the benefi t of informed and professional scrutiny and to further education and communication. The Institute initiates conferences and symposia on specifi c subjects and has a programme of meetings at which lectures are given and discussed.There are standing Special Interest Groups (SIGs) which keep under constant review pertinent aspects of navigation.The success of these Special Interest Groups is crucially dependent on the active involvement of members.