TUTOR DIVE COMPUTER
MARES is proud to introduce its TUTOR dive computer, a high-tech instrument based on the most recent
scientific research. The TUTOR dive computer is designed to guarantee the maximum safety, efficiency,
reliability and long life. In this manual, you will find all the instructions regarding its operation and functions.
MARES thanks you for choosing this sophisticated instrument and recommends that you follow the strictest
diving criteria in terms of safety and caution in order to fully enjoy your diving experience.
Rules for safe diving
• Plan every dive and dive your plan
• Never exceed the limits of your skill and experience
• Start every dive by reaching your deepest planned depth first
• Check your computer readings often during your dive
• Comply with the ascent rate shown by the computer
• Always stop for at least 3 minutes at a depth of 15 to 20 feet (3 to 5 meters)
• After the safety stop, ascend very slowly to the surface
• Avoid yo-yo dives (repeated ascending and descending underwater)
• Avoid strenuous activity during your dive and for half an hour after ascending
• When diving in cold water or with any dive involving strenuous activity, start ascending well before reaching
the NO DEC limits. For every dive involving decompression, prolong the decompression stop nearest to the
surface by several minutes
• Surface intervals between your dives should never be shorter than 2 hours
• The deepest dive should be the first of the day
• Dive only after the computer has zeroed from any previous day's dive
• When making multiple dives over a number of days, take at least one day of rest with no diving per week. If
decompression stops were necessary during the dives, it is recommended to take a day of rest with no
diving every three days of diving
• Avoid planned decompression dives and do not dive deeper than 130 feet (40 meters) unless you have
been specifically trained in this type of technical diving.
• Avoid repetitive "square profile" dives (dives to a single depth) deeper than 60 feet (18 meters)
• Always wait as long as possible before flying after a dive (at least 12 and preferably 24 hours), in
accordance with the recommendations of the Divers' Alert Network.
• Every dive involves some degree of risk of decompression sickness. Even if it is used carefully and all safe
diving practices are followed, neither the TUTOR nor any other dive computer can entirely eliminate the risk
of decompression sickness
• Always dive well within the NO DEC limits of your TUTOR dive computer, unless you have been specially
trained in this type of technical diving
• Always ascend several minutes before going into DEC mode, and allow yourself even more time in the
case of cold water conditions, repetitive dives deeper than 60 feet (18m), or for any dive involving unusually
high exertion.Failure to do this will increase your risk of decompression sickness
• Always start each dive by descending to the deepest planned depth of your dive first, and then gradually
ascending during the course of the dive.Failure to do this will increase your risk of decompression sickness
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