Garmin GPSMAP 8700 Black Box Owners Manual - Page 25

For example, if the last time you recorded had a sonar depth of 3.1 m (10.5 ft.), and today's sonar depth is 3.6 m (12 ft.), enter -0.5 m (-1.5 ft.) for the a Recording Offset value. User Display Offset: Sets differences in contour depths and depth labels on your own contours maps to compensate for changes in the water level of a body of water, or for depth errors in recorded maps. Comm. Display Offset: Sets differences in contour depths and depth labels on the community contours maps to compensate for changes in the water level of a body of water, or for depth errors in recorded maps. Survey Coloring: Sets the color of the Garmin Quickdraw Contours display. When this setting is turned on, the colors indicate the quality of the recording. When this setting is turned off, the contour areas use standard map colors. Green indicates good depth and GPS position, and a speed under 16 km/h (10 mph). Yellow indicates good depth and GPS position, and a speed between 16 and 32 km/h (10 and 20 mph). Red indicates poor depth or GPS position, and a speed above 32 km/h (20 mph). Depth Shading: Specifies the minimum and maximum depths of a depth range and a color for that depth range. Navigation with a Chartplotter WARNING All route and navigation lines displayed on the chartplotter are only intended to provide general route guidance or to identify proper channels, and are not intended to be precisely followed. Always defer to the navaids and conditions on the water when navigating to avoid groundings or hazards that could result in vessel damage, personal injury, or death. The Auto Guidance feature is based on electronic chart information. That data does not ensure obstacle and bottom clearance. Carefully compare the course to all visual sightings, and avoid any land, shallow water, or other obstacles that may be in your path. When using Go To, a direct course and a corrected course may pass over land or shallow water. Use visual sightings, and steer to avoid land, shallow water, and other dangerous objects. CAUTION If your vessel has an autopilot system, a dedicated autopilot control display must be installed at each steering helm in order to disable the autopilot system. NOTE: Some chart views are available with premium charts, in some areas. To navigate, you must choose a destination, set a course or create a route, and follow the course or route. You can follow the course or the route on the Navigation chart, Fishing chart, Perspective 3D chart view, or Mariner's Eye 3D chart view. You can set and follow a course to a destination using one of three methods: Go To, Route To, or Auto Guidance. Go To: Takes you directly to the destination. This is the standard option for navigating to a destination. The chartplotter creates a straight-line course or navigation line to the destination. The path may run over land and other obstacles. Route To: Creates a route from your location to a destination, allowing you to add turns along the way. This option provides a straight-line course to the destination, but allows you to add turns into the route to avoid land and other obstacles. Auto Guidance: Uses the specified information about your vessel and chart data to determine the best path to your destination. This option is available only when using a compatible premium chart in a compatible chartplotter. It provides a turn-by-turn navigation path to the destination, avoiding land and other obstacles (Auto Guidance, page 20). When you are using a compatible autopilot connected to the chartplotter using NMEA 2000, the autopilot follows the Auto Guidance route. NOTE: Auto Guidance is available with premium charts, in some areas. Basic Navigation Questions Question Answer How do I make the Navigate using Go To (Setting and chartplotter point me in the Following a Direct Course Using Go To, direction in which I want to go page 18). (bearing)? How do I make the device Build a single-leg route and navigate it guide me along a straight line using Route To (Creating and (minimizing cross track) to a Navigating a Route From Your Present location using the shortest Location, page 19). distance from the present location? How do I make the device guide me to a location while avoiding charted obstacles? Build a multi-leg route and navigate it using Route To (Creating and Navigating a Route From Your Present Location, page 19). How do I make the device steer my automatic pilot? Navigate using Route To (Creating and Navigating a Route From Your Present Location, page 19). Can the device create a path for me? If you have premium maps that support Auto Guidance and are in an area covered by Auto Guidance, navigate using Auto Guidance (Setting and Following an Auto Guidance Path, page 20). How do I change the Auto Guidance settings for my boat? See Auto Guidance Path Configurations, page 20. Destinations You can select destinations using various charts and 3D chart views or using the lists. Searching for a Destination by Name You can search for saved waypoints, saved routes, saved tracks, and marine services destinations by name. 1 Select Info > Services > Search by Name. 2 Enter at least a portion of the name of your destination. 3 If necessary, select Done. The 50 nearest destinations that contain your search criteria appear. 4 Select the destination. Selecting a Destination Using the Navigation Chart From the Navigation chart, select a destination. Searching for a Marine Services Destination NOTE: This feature is available with premium charts, in some areas. The chartplotter contains information for thousands of destinations offering marine services. 1 Select Info > Services. 2 Select Offshore Services or Inland Services. 3 If necessary, select the marine service category. The chartplotter shows a list of the nearest locations and the distance and bearing to each. 4 Select a destination. You can select Next Page or Previous Page to view additional information or to show the location on a chart. Navigation with a Chartplotter 17