Simrad GN30 MKII Shipmate DGPS Navigator
an advanced navigation and high performance positioning tool for the professional fleet ....and yet uncomplicated to operate. The GN30 MKII has a 6" large bright 4 level monochrome LCD display. The latest GPS receiver technology and built-in differential* receiver ensures optimum accuracy at all times. Two units can be connected together forming: The Bridge System ... one at the chart table for planning and the other at the helm for navigation. Waypoints and routes are transferred from planning to helm via a high speed data link.
The Global Positioning System
is rapidly becoming the most common system used for navigation and positioning all over the world. Not only for maritime use, but also for land-based applications and aviation. The satellite-based system has been developed and is operated by the US Department of Defence in order to provide an accurate and reliable service, which include a 24-hour global coverage. The GPS system consists of approx. 24 satellites which orbit around the Earth at an altitude of approx. 20,200 km. The satellites transmit perfectly syncronized data. However, depending on the position, the signals will reach the receiver at a slightly different time. By adding the measured time difference to the known position of the satellites it is possible to calculate the ship’s position to within a few meters
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