Update In Development!

Access the wave, wind and temperature data from the NOAA combined moored buoy networks and from national and internation partners under its International Ocean Observing System charter as a data host. Tapping into this vast array of floating resources, the Waterman Buoy Monitor gives you access to literally hundreds of buoys in all the worlds major oceans and inland waters.

The menu options available in the Waterman Buoy Monitor allow you to:

About the Gauges and Graphs

The NOAA servers process the hourly buoy data harvest in an attempt to separate the sea state into two components, the Swell and the Wind Wave. The current readings for each of these components is shown separately on a round gauge of the same title.

Each wave gauge shows the height of that component with a needle deflection to indicate feet or meters.

The direction from which the waves are traveling is shown where the black triangular "nib" rests, oriented so that its point indicates the direction of travel.

Finally, the dominant period in that wave component is shown as numeric data, drawn on the face of the gauge.

The wind is shown on the third gauge, where the needle indicates the average wind speed over the previous hour in knots or kilometers per hour, the nib indicates the direction from which it is blowing and the numeric data indicates the gust strength.

The graphs at the bottom of the display show these same data parameters over the previous 24 hours of buoy data collection. These are useful to spot trends and early warnings. In a future release these graphs will also contain forecast data out to several days.

On the left side of the of the display you will find the NOAA 5 digit buoy identifier, the location with which the buoy is identified according to the NOAA Weekly Operating Status Table along with the buoy latitude and longitude if they are known.

Below that the date and time at which the displayed data were valid and the the time at which the next update is or was expected to be available are shown. If this time has come simply long press the screen and the Waterman Buoy Monitor will begin polling the NOAA servers for updates, as described below.

Below that you'll see the water and air temperatures at the buoy location displayed in degrees Farenheit or Celcius.

As a mental image while viewing the data, you can think of the swell component as the part of a sea that rocks your boat in a regular rhythm and that surfers love to ride. The wind wave is that sloppy stuff that just bounces you to and fro and that nobody really likes!

Note that not all NOAA buoys support the full set of data as described above. In those cases the affected display element shows no data.

Managed Internet Use

The Waterman Buoy Monitor makes very controlled use of your Internet access.

Each of these small downloads are locally stored and the extracted data is carefully time tagged and monitored so that it is never stale while you are looking at it and is also never unnecessarily refreshed from the internet. Your battery loves this app!

If a viewed buoy data file is late being refreshed, a new refresh is scheduled once per minute until the data is updated or your maximum retry limit is reached. NOAA is generally never more than a few minutes off with those updates, so if you give them about 10 minutes of leeway that should cover most normal operating timelines.

The National Data Buoy Center Operating Status Table data is updated once a week and can sometimes be a couple of days later than expected when operating reports are difficult to collect or aggregate. It's never more than a couple of days and most of the data that we use from the table is not perishable, for example its latitude and longitude and location name. For the status table a full day is waited before a new refresh call is made.

Buoy refreshes are cancelled if a different buoy is selected and all are cancelled if the app moves out of focus.

Be sure to check our web site for additional operating tips and instructions.


The Waterman Buoy Monitor makes no use of information on or about your phone.

Background Graphics Credits

We've tried to supply a background image for the Waterman Buoy Monitor to recognize just about every kind of waterman there is. If we've left your particular kind out, please let us know and we'll see what we can do.

Those graphic backgrounds began as public domain photographs, stylized by DRAppLabs talented artists to serve the purpose of our app.

They are awesome, we think, both the finished products and the source images themselves. Here is our attribution to those sources: