Quote Originally Posted by aerospot View Post
Wow! Never thought this thread would go so far...


All comments and suggestions (except shaving) are warmly accepted with my
My main thought was of mask sqeeze. I have yet to go deeper than 25' but noticed even there I cannot maintain positive pressure without it seeping out through my stache. Is mask squeeze at deeper depths an issue due to this factor?

Dave


Dave,

Reference your textbook for mask squeeze. You will find that it is differential pressure between the air space INSIDE the mask, and the increased ambient pressure surrounding the external surface of the mask that constitutes a squeeze. To equalize the pressure, eliminating the squeeze, is simply blow through your nose. The increased air pressure within that air space will eliminate that squeeze. A good indication of a mask squeeze, is the bruising around the eyes subsequent to the dive. It is not very painful, but looks absolutely awful!! If this occurs make sure that the "story" is fifteen guys jumped you in a bar and they are the worse for the experience. (or just say the wife looks worse! )

A proper fitting mask is the single most important piece of equipment, after the cranial appendage that it surrounds. A proper fitting mask will remain in position on your face, after a slight inhalation through your nose (creating a slight vacuum). The mask should not equalize (heard that word before?) and then fall off your face. It should retain that vacuum for a good 30 seconds. Any mask that does not do this is not right for you.