Navigational aid for ships for avoidance of collisions - has movable information carrier with indications for position recognition and avoidance action decision

摘要

The navigational aid is to be used with a radar station provided with a bearing ruler, graded circle and range rings or a variable range ring. The device has an information carrier with indications for position recognition and evasion decisions. It is movable relative to a reading head or a visual mark (17), and the mutual movements are based on the time in which the opposite object travels a certain distance, possibly taking into account its own speed. The other part moves in accordance with its own speed or the relative bearing of the opposite object.