Joining In

It'd be great to have you join in and contribute data to TeamSurv. We always welcome new participants, wherever they are based. By taking part, you are contributing to our knowledge and understanding of the seas and oceans; helping produce better charts and safer navigation; and also providing data that can ensure the seas are managed in a sustainable way.

What do I need?

Not much is the short answer. A boat with a GPS and depth sounder that can output data is the minimum; if you have a compass or wind instruments, data from them can also be useful. Depending on what you have on board, you may be able to log data with your existing nav system, or if you have you have Wi-Fi enabled instruments you can use our app, or you can purchase one of our data loggers. You can see full details of the options in our Logging section. It doesn't cost you anything to take part (unless you need to buy a logger or a NMEA to Wi-Fi converter), and we try and make everything quick and simple to use.

What's in it for me?

Whilst many participate just out of fun or interest, or to contribute to the common good, there are a number of other benefits that you may find useful, such as:

  • The track view on the web site lets you see exactly where you've been, and you can bring it up to show others
  • If you use our free app or Windows software, it gives you another display of your instrument data
  • As we produce depth maps in a number of digital chart formats, these will be free to active loggers - we will make a charge to others to help cover our operating costs
  • Many sailing boats interested in performance use the logged data to analyse the performance and build up polars - the free NMEA to CSV software lets you easily decode the NMEA data and get it into your spreadsheet or database
  • Some yacht charter and flotilla companies use the logged data to see how their boats are used - particularly useful if there has been an incident or if you suspect a boat was taken out of the allowed cruising area


Many people and companies want to ensure that their privacy is maintained. We do not make public the names of any of our loggers (unless you have agreed in advance), and any track data we may release is fully anonymous, with just a reference number for each vessel. Also, we do not release your details to any third party, for advertising or any other purpose, unless legally obliged to do so. Of course, if you want to tell people what you're doing, you can do so on our Facebook page or LinkedIn group. It's great if you do, but that's entirely up to you.

So What Do I Need to Do?

First, have a look at our logging page and decide what means of data logging best suits you. If you have any questions, feel free to contact us and ask.

Next, fill in our logger application form, and we will set you up as a data logger in the system, and send you any necessary kit, plus information on how to get things set up.

Before logging any data, you need to go through a simple calibration process. This gives us details of your GPS and depth sounder, their relative positions, and also the depth of your echo sounder transducer. Knowing this, we can use the depth below transducer data from your echo sounder, so there is no need to change the depth offset setting in your instruments.

Now just go to sea as normal - we don't ask you to go to any specific place, or to change your normal activities. Then periodically send us your data, by whatever means required by your logging method. This may be directly from our app, or through the web site, or through the TeamSurv Uploader software.

Within a few minutes of uploading your data, you will be able to see your tracks in the Track Viewer. The data is also fed into our processing to generate depth maps - these will soon be viewable on the web site, and downloadable in a number of formats to suit chart plotters and navigation software and apps.