DIVE LOG AUSTRALASIA FEB 2026

Testing the SUUNTO NAUTIC dive computer. I was able to take the brand new SUUNTO NAUTIC dive computer for a test dive last Sunday. As has been the case far too many times here in Sydney over the last twelve months, we dived just after some severe weather and the water conditions were extremely poor, down to one metre visibility with filthy muddy surgy water. This was not great as the media was full of Bull Shark warnings after a few attacks on people in shallow water near the shore. Out of the box, the NAUTIC is supplied with bungee cords and a moulded lock device which is easy to assemble. There are four buttons. On top left side are the UP button and BACK button. On the bottom left side are the DOWN button and ENTER button. There are short press functions and long press functions. You hold the top left button until it is turned on. You can then scroll down to select personal preferences from the menus. It will take time to get familiar with the menus. The NAUTIC can be charged from a mobile phone or power by a magnetic cable. The screen is very bright and colourful with easy to read with big letters and numbers. I wanted to take some photos of the Nautic during the dive to show its operation. The first photo, top right, tells us that we are diving at 22.7m and I have 12 minutes No Deco Limit. (NDL) That is about 25 minutes at 24m approximately for the total dive time. The NAUTIC is sitting on a sponge. This is very conservative compared to the old tables allowing 40 minutes at 24 metres when I learned to dive. If you like, a very safe depth and time. You can see that the water temperature is 21 degrees and I am diving on Air. The safety stop is set to 3 minutes at 3 m. In the lower right corner, the battery charge is indicated at 99%. If needed, you can add charge to the NAUTIC during your surface interval from your mobile phone. I did this at home and it works very well but it does suck a fair bit of ‘juice’ from the iPhone. However, in a situation where you have erred and are running low on power, this can get you out of trouble as long as your phone is well charged up. In photo 2, Centre Right, , Green chevrons indicate safe ascent rate. Time to Surface, TTS is 3 minutes. The NO Decompression Limit is brightly indicated in Yellow. On ascent, there is a very large bright set of chevrons of red arrows when/if you ascent too fast, yellow warning and green chevrons for safe ascent. The vibration alarm for ‘too fast’ ascent can be felt through my 7 mmm wet suit. You can personalise the information on the screen. I mostly dive on air. First impressions with the SUUNTO NAUTIC is that it is a pleasure to use. It is a strong well-built unit with crystal clear information. I enjoyed seeing the GPS map of the boat dive last Sunday. I dived down the anchor heading SE and double checked that it is secure and swam down to the reef and followed the rock wall. Returned to anchor and inflated the anchor lift bag. Boat drifts until the end of dive for eleven minutes ascent and safety stop. The dive profile is clear and easy to examine in the graph at the bottom. Looks like a safe, sensible dive! Staff review

The SUUNTO NAUTIC’s first dive in very dirty water but the bright display comes into its own in these poor conditions.

check anchor

Start of dive

End of dive

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DIVE LOG Australasia #416 - February ‘26