advanced scuba

Brand new in box, never used - asking for $850.00 Please note that this unit DOES NOT come with the heart rate monitor (hence the empty top slot in the box). Serious buyer please DM, I am often on trips, so I do apologize in advance if I don't reply quickly. FREE shipping to Con. U.S. after...

From all the experts of scuba diving here, I wanted to ask the following things - I wasn't at the top of my class in the OW course. In fact my I took about 2 days extra to complete the course and my instructor said that people are generally able to complete all the skillset in about 1-1.5 days...

Hi all dear advanced divers There is very simple question about cylinder volume and it is : what is the volume of 10 liter cylinder in 200 bar ? Air volume = cylinder volume + pressure = 200 * 10 = 2000 liter But in next they say what is the air volume of 10 liter cylinder in 300 bar and 400...