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    Open water GPS drifting

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    • gerasimosG Offline
      gerasimos Bronze Member @CroShark
      last edited by

      @CroShark

      Looking at the logbook history, I see much better recordings with the Suunto 9 in the same places several years ago, when supposedly GPS technology wasn’t as advanced as it is today…
      Let’s see after my hard reset 🤞🏻

      ![alt text](IMG_20250713_194832.jpg IMG_20250713_194806.jpg IMG_20250713_194751.jpg image url)

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      Ze StuartZ 1 Reply Last reply Reply Quote 0
      • Ze StuartZ Online
        Ze Stuart Gold Members @gerasimos
        last edited by

        Same experience for me, the track is basically a drunken squiggle. Nothing to be done but wait for a fix.

        @isazi do you know if this has been reported?

        https://zulusierra.co

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        • gerasimosG Offline
          gerasimos Bronze Member @Artus Diver
          last edited by

          @Artus-Diver this such a small deviation in the GPS is (in my opinion) absololutely nomral in a sea or lake enviroment

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          • A Offline
            Artus Diver @gerasimos
            last edited by

            @gerasimos
            Of course, as I mentioned, I don’t have a major problem, but comparing my previous tracks from before the update, they look much better.

            OWS 1.jpg

            I think Suunto should investigate this.

            Suunto Viper
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            • Ars VitaeA Offline
              Ars Vitae Bronze Member
              last edited by

              I agree, same for me, since December 2024 GPS goes crazy as hell. Previously, I had not noted any problem. Let’s hope Suunto is aware of this and is working on a fix. I have let go the accuracy of this watch in the pool, but if this negative trend continues for open water swimming it will mean that the brand is moving away from supporting disciplines such as triathlon and swimming marathons.

              A 1 Reply Last reply Reply Quote 2
              • Ars VitaeA Offline
                Ars Vitae Bronze Member
                last edited by

                To give an example:
                suuntoIMG_8928_.jpg

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                • Ze StuartZ Online
                  Ze Stuart Gold Members
                  last edited by Ze Stuart

                  I have one better. I started and finished within a few meters of each other, and swam in relatively straight lines up and down the beach, going down ~100m, back and so on. I know the distance because of the grounds on the beach, and can measure it using satellite maps…

                  If anyone wants to say ‘GNSS soak!’ I cycled for about 30m to the beach, and let the watch ‘soak’ for about 5m while getting ready. It had copied the bike ride to the watch before I swap, so it will have had opportunity to update the A-GPS.

                  This was with a Race, not a Vertical.

                  409f1507-95a2-4fbd-895b-b5aee3b1bf4b-image.jpeg

                  b471f8ee-3ed3-4499-97f0-55fdca3da114-image.png

                  Then this was with a Vertical. Better… but for an out-and-back swim in calm water, not great.

                  e58f7b6a-8953-4d1d-8c40-9b506e704c13-image.png

                  https://zulusierra.co

                  Ars VitaeA gerasimosG 2 Replies Last reply Reply Quote 2
                  • Ars VitaeA Offline
                    Ars Vitae Bronze Member @Ze Stuart
                    last edited by

                    @Ze-Stuart This is really crazy. Suunto, what happened to your devices…!?

                    1 Reply Last reply Reply Quote 3
                    • gerasimosG Offline
                      gerasimos Bronze Member @Ze Stuart
                      last edited by gerasimos

                      @Ze-Stuart Exactly the same GPS behavor .
                      maybe @Dimitrios-Kanellopoulos can give an andvice 🤙

                      Suunto Vertical Ti
                      Suunto S9 gen1
                      Suunto Ambit3 peak

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                      • PavlasP Offline
                        Pavlas
                        last edited by

                        I should mention again that my brother has no problem with Ocean. Ocean’s last firmware is from December? So I would look for a problem somewhere after that time.

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                        • Ze StuartZ Online
                          Ze Stuart Gold Members @Pavlas
                          last edited by

                          @Pavlas yes, I think as long as the firmware rollback also rolls back the firmware of the GNSS receiver I think we could have decent OWS again.

                          https://zulusierra.co

                          1 Reply Last reply Reply Quote 2
                          • A Offline
                            Artus Diver @Ars Vitae
                            last edited by

                            @Ars-Vitae said in Open water GPS drifting:

                            I agree, same for me, since December 2024 GPS goes crazy as hell. Previously, I had not noted any problem. Let’s hope Suunto is aware of this and is working on a fix. I have let go the accuracy of this watch in the pool, but if this negative trend continues for open water swimming it will mean that the brand is moving away from supporting disciplines such as triathlon and swimming marathons.

                            Can you share your pool swimming experience?
                            What do you think about the “new” algorithm?
                            What are your thoughts on swimming style recognition?

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