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Suunto Nautic User Guide

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  • Navigation settings

Navigation settings

You can check and change general navigation settings in the Map options > Navigation settings. You can calibrate the compass, correct declination and change compass unit and position format in this menu.

Position formats

The position format is the way your GPS position is displayed on the device. All the formats relate to the same location, they only express it in a different way.

You can change the position format in the navigation settings.

Latitude/longitude is the most commonly used grid and has three different formats:

  • WGS84 Hd.d°
  • WGS84 Hd°m.m'
  • WGS84 Hd°m's.s

Other common position formats available include:

  • UTM (Universal Transverse Mercator) gives a two-dimensional horizontal position presentation.
  • MGRS (Military Grid Reference System) is an extension of UTM and consists of a grid zone designator, 100,000-meter square identifier and a numerical location.

Suunto Nautic also supports the following local position formats:

  • BNG (British)
  • ETRS-TM35FIN (Finnish)
  • KKJ (Finnish)
  • IG (Irish)
  • RT90 (Swedish)
  • SWEREF 99 TM (Swedish)
  • CH1903 (Swiss)
  • UTM NAD27 (Alaska)
  • UTM NAD27 Conus
  • UTM NAD83
  • NZTM2000 (New Zealand)
NOTE:

Some position formats cannot be used in the areas north of 84° and south of 80°, or outside the countries that they are intended for. If you are outside the allowed area, your location coordinates cannot be displayed on the device screen.

Setting declination

To ensure correct compass readings, set an accurate declination value.

Paper maps point to true north. Compasses, however, point to magnetic north – a region above the Earth where the Earth’s magnetic fields pull. Because magnetic North and true North are not at the same location, you must set the declination on your compass. The angle in between magnetic and true north is your declination.

The declination value appears on most maps. The location of magnetic north changes yearly, so the most accurate and up-to-date declination value can be found from websites such as www.magnetic-declination.com.

Orienteering maps, however, are drawn in relation to magnetic north. If you are using an orienteering map, you need to turn the declination correction off by setting the declination value to 0 degrees.

You can set your declination value from the Settings under Navigation » Declination.

Compass unit

You can set the compass unit to Degrees or Mils. For changing the compass unit, select the Compass unit option in the compass settings.

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