Map Overview¶

The Navigation page is the primary screen in Bristol Maps. It displays a full-screen map with real-time data overlays, navigation tools, and access to weather, tides, and more.

Navigation Page Overview — Navigation page overview

Screen Layout¶

The banner at the top of the screen displays real-time navigation data in a scrollable bar:

Display	Description
Speed	Current speed over ground in knots
Depth	Water depth from NMEA depth sounder (when connected)
Boundary	Distance to the nearest loaded boundary line
Location	Current latitude and longitude coordinates
Compass	Current heading/bearing
Temperature	Water temperature (when NMEA sensor connected)

Tip

The navigation banner opacity can be adjusted in Settings to avoid obscuring the map.

Map Controls¶

Right side buttons:

Zoom In/Out -- Adjust map zoom level
Center on Me -- Re-center the map on your current position
Settings -- Open the navigation settings flyout menu

Left side buttons:

Weather -- Quick access to weather at your location
Tides -- Toggle the tide overlay chart
Gear -- Access pot/gear tracking tools (when enabled)
Temperature -- Display water temperature (when NMEA connected)

Map Interaction¶

Pinch to zoom -- Zoom in and out on the map
Double tap -- Opens a context menu with options:
- Create Waypoint -- Save the tapped location as a waypoint
- Weather -- Get weather for that location
- Tides -- View nearby tide stations
- New Log Entry -- Create a log entry at that location

The settings flyout provides access to map overlays and configurations:

Base map selection -- Choose between Satellite, NOAA, Alaska High Res, or Streets. See Maps.
Grid overlay -- Enable and configure district grid display
Boundary lines -- Load and display fishing district boundaries
Log overlays -- Toggle display of log entries on the map
Waypoints & Routes -- Toggle waypoint and route display
Tide stations -- View and select nearby tide stations
Boundary alarm -- Enable proximity alerts

Heading Line¶

A heading line extends from your position in the direction of travel. This can be configured in Settings:

Display mode -- Show as distance or time-based projection
Color -- Customize the heading line color
Length -- Adjust projection distance

Follow Me Mode¶

Tap the Center on Me button to lock the map to your current position. The map will automatically pan to follow your movement. Tap again or manually pan the map to disable.

Map Layers¶

Multiple layers can be displayed simultaneously on the map:

Base map -- The online background layer (Satellite, NOAA, etc.)
Offline imagery -- Downloaded MBTiles layers with configurable priority and transparency
Boundaries -- Fishing district lines
Grid -- District grid overlay
Waypoints -- Saved location markers
Routes -- Multi-waypoint paths
Track lines -- Recorded position history
Gear points -- Pot/gear locations
AIS targets -- Vessel positions from AIS data
Fleet locations -- Shared positions from group members
Log entries -- Saved fishing logs on the map

Navigation Menu Screenshot — Navigation Settings Menu

Settings Reference for all configurable options
Downloading Maps for offline imagery
Groups & Sharing for fleet location features