Display 0813 M is a customizable app for sailing data on iPhones, iPads, iWatches and ActiveLook smart glasses. It has highly configurable pages and data displays with a selection of over 30 sailing measurements from the boat’s NMEA network and polar tables.

On phones and pads the available data includes minimum and maximum values and time series graphs. The Wind Display provides comprehensive wind, heading and speed information. The presentation is in hybrid analog and digital format, based on the sailing context: going upwind, downwind or towards a waypoint, and enhanced by the polars data.

Watches and smart glasses can display any of the 30+ measurements, have any number of pages with preferably no more than three or four lines per page. The pages can be filtered depending on the sailing context, whether a waypoint is set or polar table is activated. iWatches and smart glasses require an active paired iPhone.

Do check out the smart glasses in the below images and in the User's Guide: they are quite cool!

Display0813M connects to a NMEA 0813 Wi-Fi gateways such as B&G Vulcan, Zeus, GoFree, Yacht Devices, Signal K and ShipModul, using UDP, TCP/IP or TCP/IP with DNS-SD (a.k.a Bonjour or Avahi).

The screen copies below (click to open) provide some detail on the functionality. For more information check out the user's guide: User's Guide.

The iPhone and iPad app, which supports also Macs with Apple silicon, is available from the Apple App Store. Search for 'Display0183M' or use the link: Display0183M.


Version 2

Fully configurable phone & pad Displays:
• Any number of pages, any number of rows on any page and any number of Displays on any row
• Any display type (Generic Display, Wind Display or Graph Display) in any location
• Automatic scaling. Displays adjust to screen: a single Display on a page fills the entire screen and all Displays on a page are fitted to the screen (limited by the smallest allowed text size). The Display sizes are relative to each other: XS is half of M, which half of XL.
• New time series options
• Page(s) Editor: change, add to or remove from the provided default pages or previous version’s converted pages.
• Display Attribute Editor: edit displays

Other:
• New settings/configurations layouts

Version 2 is delivered as recurring annual subscription (approximately 1€/$ per month), with a two week free trial.

Version 2.1

New capabilities:
• Analog Data Displays show the data in analog format: a pointer over the scale, which is set based on the data type being shown and scales based on the maximum values or direction (dual 180° or 360° degrees). Optionally, minimum/maximum and most recent values can be displayed.
• Damping (averaging): measurement values may be averaged across most recent readings. Minimum and maximum values continue to be without damping. The provided default values can be changed by editing the configuration file.
• Time to waypoint: a new calculated measurement WP ETE (h.s), based on the remaining distance and current velocity made good (VMG) towards the waypoint.
• Wind speed true and Wind angle true are optionally calculated based Speed over ground (SOG) and apparent wind values, by setting the NMEA source filter is to “CA” (Calculated).
• The Wind Display attempts to use the Wind VMG NMEA measurement data. If this not available the Wind VMG C calculated from the SOG and Wind Angle True is used instead. If neither is available the “- - -“ symbol is displayed.
• Display Map backup: saving and restoring a Display Map backup in the pre-start mode.

User interface
• Page background color: the information and command buttons line at the bottom of the screen and any place not not covered by the Displays can be assigned a custom color.
• Window frame night mode color can be set to black (equals no frame) in addition to red used in the previous versions.
• Default page map page 2 “Perf-” has been updated to include a Speed over Ground Analog Data Display.
• Page(s) Editor: feedback for user tapping save backup, restore backup, restore defaults and undo buttons.
• Errors or warnings raise the alert symbol to the bottom of the screen. See the log file for details. Tap on the symbol to reset it.

Other
• Dark mode (darker with navigation lights) and tinted (monochrome) app icons.
• Internal code optimizations including diagnostics logging and app robustness.
• iWatch: Default configuration’s first page name removed to maximize data size on iWatch screen.
• Error corrections
- Watch: configuration file moved to app’s Documents directory to make it editable.
- GPX export: corrected a typo in the longitude definition.

Maintenance release 2.1.2
• Corrects an error in conversion to user preferred units in data displays.
• Improved stability
• Adds an option for simulated data to optimize configuration without actual data sources


Erratum
Adding or deleting pages in Pages Editor (edit all pages, available before tapping "Start>") is not saved for next sessions, unless you make also some other change. In this case a yellow unsaved changes symbol appears when you close the editor. Tapping on the symbol writes the changes to permanent memory. All changes made in the Page Editor (edit current page after tapping "Start>") result in the yellow save symbol appearing when closing the editor.


Upcoming version 2.2

New capabilities
• Route Display (ßeta): show expected apparent wind angle and direction on next route legs.
• Alerts: set a threshold for any measurement and create an alert when exceeding or not meeting this value.
• Trip GPS measurement: calculated trip distance for the current app session. Logs current, daily, and annual totals when closing the session.
• Wind Display: Course and Bearing to waypoint selectable between °M and °T.
• New measurement: Waypoint bearing °T.
• In case only either Magnetic or True value is available for Course or Waypoint bearing, the available value is used to calculate the missing value based on declination.
• Stale message timeout: user selectable duration for received NMEA data becoming stale.

Usability improvements:
• Analog Data and Wind Displays: Optionally smooth transitions between data readings. Consistent settings close dialogues for ‘discard changes and close’, ‘save changes and close’ • and ‘change for this session and optionally save permanently’
• Embedded User's Guide (also available in Files/Display0183M)
• Designed for iPad: (Macs with M chips running macOS) window size setting.
• “Waypoint direction” has been renamed “Waypoint bearing”
• Error logging default set to warnings and errors instead of none.
• Added “New in this version” link to start page
• Time Series Graphs’ consistency
• Performance optimizations

Error correction:
• Adding new or deleting old pages in Pages Editor activates the unsaved changes icon.

Note: requires iOS 17 or later.



Data & Privacy
Display0183M collects optionally logs (raw data, location and/or filtered and formatted NMEA measurement data).
The data is stored on the user device file system and never read or otherwise used by Display0183M. The user is responsible for managing the log files.

Comments are welcome.

NMEA, NMEA0183, NMEA2k, polars, OCR, data display, navigation, sailing, smart glasses, ActiveLook