There are three tables on the PADI RDP - Table 1 is the dive itself, Table 2 the surface interval time and Table 3 is for repetitive dive planning.

Table 3, on the reverse side of the PADI RDP, shows both the residual nitrogen time and the new maximum dive time for the repetitive dive.

When these two numbers are added together you'll notice that they always add up to the maximum no-decompression limit listed on Table 1. This to ensure that no repetitive dive can ever break that listed NDL.

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Barotraumas are injuries (trauma) caused by changes in pressure (baro) so therefore may occur on both ascents and descents.

Diving while ill or injured may increase our susceptibility to risk of barotrauma as well as diving beyond our training, experience and comfort levels in new locations or using new equipment or new techniques without becoming familiar with them via proper training and supervision. 

Whatever your diving experience or certification level continuing your education and gaining experience in new areas via a PADI Discover Local Diving program can keep you inspired and engaged.

Learn more about the PADI educations and experience p[rogram on your PADI IDC

Although many Adventure Dives may be conducted by a PADI Instructor without Specialty Instructor certification, others that have additional skill and competency expectations; such as more challenging environments and or equipment configurations, quite reasonably require both training and experience to be conducted both safely and competently.

Cavern, Sidemount, Self-Reliant and Rebreather being some examples of Adventure Dives that may only be conducted by a PADI Specialty Instructor in that area. 

Learn more about general standards and their application on your PADI IDC and continue your education with PADI Specialty Instructor programs.

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Because the cylinder is an inflexible container the temperature change will be expressed as a change in pressure rather than a change in volume.

We can use a rough guide to Charles Law here - every +/- 1C will equal a pressure change of 0.6 bar.

Since we have a drop of approximately 20C will have a pressure drop of approximately 12 Bar (20x0.6=12)

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Early recognition and action when dealing with any hazardous marine life injury are essential for the victims' chances of recovery.

The pressure immobilization technique is essential for any recreational diver and dive professional diving in waters where Blue Ringed Octopus and other venomous marine life live.

Learn more on your PADI Emergency First Response Instructor, PADI Divemaster and PADI Instructor Development Course. Book Now and Ignite Your Life today!