Lake Washington (Seattle) Boat app for iPhone and iPad

The Lake Washington Boating Charts (NOAA Raster Navigational Charts) viewer is for recreational boating.

Useful for continuous navigation and works offline.
All Raster Navigational Charts are obtained from NOAA.

Compatible to latest devices.
Works in Landscape and Portrait modes.

Locates user GPS on map. Shows Coordinate in 2 formats and lets copy or forward.
GPS feature enables navigation for device Heading and Directions.

Live tracking of user GPS positions. Draws track lines along the navigation route.
Makes save and load tracks easy. Enables to export saved tracks.

Manage map layers through Settings. Once changes made will remain until updated again.
Zoom In and Zoom Out control handles transparent interaction with map while GPS is active.
Pan control handles moving map to Top-Bottom-Right-Left sides for effective chart viewing.
Zoom Extents brings chart bounds to visibility no matter where the map or user location is.
Transparency option allows handling opacity of charts visibility.


GPS Usage Disclaimer: "Continued use of GPS running in the background can dramatically decrease battery life." While not using this application change location services option to "When In Use" for this map in your Device Privacy settings.

Nautical Charts Disclaimer:

The NOAA RNC are intended for navigational use. They are intended to be used in their electronic form only. NOAA RNC are not intended to meet federal chart carriage regulations published in the Code of Federal Regulations. NOAA makes no representations that the RNC Service or the data provided thereunder meet federal chart carriage regulations. Users should consult the Code of Federal Regulations for current federal chart carriage requirements.

Updates to the RNC data available through the NOAA RNC Service are done on a "best efforts" basis. The timing of their availability is not guaranteed. Users are responsible for verifying the currentness of information obtained pursuant to the NOAA RNC Service.