PDIS interprets your dive profile and calculates an intermediate stop as a function of the nitrogen uptake your body has endured so far. This type of intermediate stop allows your body to reduce on gassing and slowly release nitrogen while you continue cruising along and enjoy your dive.

PDIS also optimizes the time you spend underwater. By making a proposed intermediate stop you give your body time to desaturate the main tissues while you continue diving, without prolonging any necessary deco stops. This is safer for your body and makes for a more pleasurable dive

Although a trend towards ‘deep stops’ has infiltrated the dive computer industry, UWATEC has responded with real science. UWATEC’s intermediate stops take key elements into the equation and actually incorporate your profile into the calculation, considering:

• Nitrogen accumulated from the ongoing dive
• Nitrogen accumulated from previous dives (repetitive diving dependent),
• Type of breathing mixes you use

Conventional deep stops completely ignore these factors.

The PDI stop is calculated as the depth where the leading tissue for the decompression calculation is off gassing. The computer advises the diver to make a 2 minute stop just above the depth displayed on the computer. Galileo then starts a 2 minute countdown.

During the PDI stop the leading tissue in your body is releasing nitrogen, which combined with the relatively high ambient pressure, inhibits bubble growth. PDIS is an added safety feature which can be followed during both no-stop and decompression dives. With Galileo you have the choice to follow your PDIS recommendation or you can turn it off and dive using our core adaptive algorithm.

Where-When-How do we get PDIS 

The unique PDIS feature will be available on our revolutionary Galileo computers. Galileo state-of-the-art computers offer total innovation for an extraordinary underwater experience and PDIS is the proof of our continued commitment to the advancement of diving.

These computers were built to adapt to future innovations in both science and technology. As science advances, so does Galileo, and consequently so does your diving pleasure.

Owners of the current Galileo Sol will be the first to experience PDIS. The Galileo Sol, introduced in March 2007, is the ultimate dive computer and thanks to its reprogrammable processor, existing Galileo Sol owners can enjoy PDIS via a simple internet download and update process over the infrared interface.

PDIS is included in the v1.4 release of the Galileo firmware, now available as a free download from the Downloads tab below