We need to change the percentage to a decimal for the answer here. This means 2%CO will become 0.02ppCO at the surface.

Ambient pressure at 22m/sw is 3.2ATA. If we multiply our ppCO by the ATA we will get our answer. 

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Grab your PADI Instructor Manual and head to Paperwork And Administrative Procedures. This section is alphabetised so the Waivers heading will be towards the end.

As you can see, they're issued to the individual and valid for 12 months after issuance. 

PADI's maximum rate of ascent is 18m/min. It must be stressed that this is their maximum and they advocate the S.A.F.E protocol - Safely Ascend From Every Dive, and it's practical to follow the ascent rate meter of your personal dive computer which is set more conservatively. 

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Working as dive professional you'll need to know you're way around a boat and using the proper terminology will help with navigating your way around vessels both at the surface and underwater.

The front is the Bow

The rear is the Stern

The right side whilst facing the bow is Starboard Side

The left side whilst facing the bow is Port Side.

Learn more about working as a professional diver leading diver from and around boats on your PADI Divemaster course.


When choosing a BCD always consider not only your own weight that must be kept positively buoyant at the surface but also the equipment that you may be taking diving; weight system, cylinder material types and sizes, camera equipment etc.

If in doubt choose the maximum lift you can get, especially as a dive professional. Book Now for you dive professional development programs and Ignite Your Life today!