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Meet the 64bit upgrade to
the classic native macOS app

MacENCx64 recompiled for Monterey & beyond. Just as robust
and powerful as before with new chart options coming soon.

System Requirements

Two Device License:

  • Supported on two computers (home and boat, boat and backup, captain and first mate, chart table and ditch bag… You get the idea.)
  • License management user portal (devices, hardware upgrades, and activations). You have full control.

Minimum System:

  • macOS 10.15 (Catalina)
  • MacBook Air, mid 2012
  • Processor: Intel Core i5 or i7 
  • Memory: 4 GB

Supports all Intel Macs capable of running:

  • macOS 10.15 (Catalina) and newer.

Support for all Apple Silicon (M1, M2 +) Macs

  • Universal app! Runs on Intel and Apple Silicon.
  • Runs super fast on Apple Silicon. 

Feature List

GPS & Instruments – Real time and Simulated display of current LAT/LON (position), SOG (Speed over Ground), COG (Course over Ground), BTW (Bearing to Waypoint), DTW (Distance to Waypoint), VMG (Velocity Made Good), XTE (Cross Track Error), TTG (Time to Go) for waypoint and entire route, a satellite graph and a NMEA monitor. GPS data can be repeated to another device such as control of an Autopilot. Additional instrument data (Heading, Speed, Depth, Temperature, Wind Angle and Windspeed) is also displayed. Having all this information literally at your fingertips, assures that you remain informed of your position and course.

Charting & Plotting – Current position with velocity vector, waypoints, routes and track history are plotted. Seamless quilted vector or raster chart scrolls keeping current position centered. North up or course up orientation. Chart may be displayed with low light viewing intensity. Click on any object on the chart and see complete details. Search and scroll to any object on the chart. Chart can be “marked up” in any color. No more marking, erasing and remarking paper charts… know where you are, where you’ve been, and where you’re going!

New Download Manager – Contains popular free chart catalogs (NOAA, Brazil, New Zealand, etc). Select and download within app. Automatically unzips charts and adds to Chart Manager. Easy Sync and Update check to get the latest charts. 

Zooming & Scrolling – Show chart at scales between 1:2,500 and 1:20,000,000 zoom with excellent clarity. Rectangle zoom select to display any part of the chart. Scroll with chart drag or arrow keys. Easy zooming on double click, touchpad scroll, pinch, & zoom gestures, mouse scroll wheel, or select direct zoom level.

Waypoints – Create, edit, drag and goto. Waypoints include a name, icon, and description. Waypoints can be saved, exported/imported and transferred to/from the GPS. Waypoint positions can be displayed in several user selectable formats. Flexible Waypoint usage makes it extremely easy to set a course for intermediate destinations, or to return to previous ones. Found a great fishing hole or anchorage? No problem… save it to a Waypoint for future reference.

Routes – Create, edit, drag and goto including auto advance. Routes include a name and total distance. For each waypoint in the route the bearing and distance from the previous waypoint is given. Routes can be saved and transferred to/from the GPS. Flexible routing features make it very easy to plan a trip or to repeat a previous trip.

Track Logging – Log and plot historical position automatically at user selectable intervals including course, speed and instrument data. Track can be exported/imported and transferred from the GPS. See how efficiently you sailed your course. Use this information to implement changes in future routing.

Measure – Position, distance and bearing (true or magnetic) anywhere on the chart including great circle routing. This quick, easy, and accurate method of measurement makes paper chart measurement an antiquated methodology.

Built-in Alarms – Available for Anchor drag, Waypoint arrival, Cross Track error, Shallow water, and AIS/Radar vessel proximity. Both visual and audible cues are provided. User selectable range. Have you ever tried to sleep on the hook during foul weather, while wondering if your anchor was truly fast? Don’t depend on luck and guesswork. The integrated alarms add an additional level of comfort in knowing what’s really going on.

AIS/Radar – Automatic Identification System receiver displays local vessel traffic including name, call sign, length, speed, course, distance, destination and closest point of approach. RADAR shows tracked targets. Both AIS and RADAR are plotted on the chart. AIS transponder can be used.

Weather – Using readily available and free GRIB weather forecast files, wind speed, wind direction, wave height, wave direction, current, pressure, precipitation rate, air and sea temperature are plotted on the chart. Choose the date and time of the forecast you wish to see. Knowing the forecast helps make key routing decisions.

Tides – Option Click on the chart to bring up AyeTides to the nearest station. Having local tide data at hand can come in handy when deciding to enter a port.

Accordion ContentHelp – Application help is provided through a ‘Help Viewer’ that provides quick answers to most questions regarding configuration and use. Easy access to assistance will ensure that you quickly become a master of even the most complex program functions.
AppleScript Compliant – Allows full scripting capability. While MacENC is an extremely powerful and flexible application, users who like to experiment with additional features can easily create scripts to further enhance usage.

Google Earth Export – Plot waypoints, routes, tracks and weather in Google Earth. Friends and family can easily see your plans and progress with Google Earth on a Mac or PC.

TCP/IP Interface – Send (TCP) and receive (TCP or UDP) NMEA data over wifi. Any number of clients including iNavX for iPhone and iPad can share the NMEA data.

Apple Maps Integration – Option click on any chart location and launch Apple Maps straight there. See satellite views. See street views. Find that perfect destination, send to your phone, then hop in the dinghy and you’re ready to go!

Feature Highlights


Displays real time GPS data. The GPS Window can be re-sized and the data will be visually scaled. This makes for a usable “Maxi” display. Transparent allows charts to be seen through the GPS Window. The Monitor, Satellites and Settings button open respective drawers.




Displays realtime instruments data. Resizes and scales like the GPS Window.

Chart Manager

Displays list of available charts. Quickly scroll to any chart or any feature (navaid, facility or harbor).







Chart Display and Navigation

In this window, the vessel is being navigated to the waypoint GGBRG (Golden Gate Bridge). The blue line shows the course to the active waypoint and the trailing dashed line shows the track history. In the Navigation Window, the distance and bearing to the active waypoint are shown.



Vector & Raster Chart Display

Display vector (ENC) and raster (RNC) charts.  Clicking any navaid on the chart displays pertinent details in the Navigation Window.















The Overview Window shows a zoomed out view. The box outlines what is shown in the Chart Window. The box can be grabbed to scroll the Chart Window.





Double clicking on the chart creates a new waypoint. Waypoints can be edited in place and saved and deleted and made active.



Routes can be created using waypoints. The selected route is plotted on the chart and the distance, bearing and time (cumulative and leg) are listed.





AIS & Radar

Connect a readily available AIS (Automatic Identification Receiver) or Radar to your Mac and “see” local vessel traffic.


The historical position is stored. Selecting any row plots the past position on the chart including bearing and speed.







Tides & Currents

Click anywhere on the chart to get a tide or current graph via AyeTides.








Using readily available and free GRIB weather forecast files, wind speed, wind direction, pressure, air and sea temperature are plotted on the chart. Both traditional vectors with barbs or Beaufort scale filled vectors are available. Selecting the forecast is as easy as picking the date/time from the list.


Google Earth

Export waypoints, routes and tracks to Google Earth.

Apple Maps

Launch maps from any location on charts. See satellite views, get street views, find a great destination and send to your phone. Jump in the dinghy and go!

NEW! MacENCx64

Download Manager

Pull down popular free chart catalogs. Select and update with automatic unzip and add to Chart Manager





Sync & Update Latest

Keep safe with update of latest charts