The positives of negative buoyancy!

Finally, some clear thinking on the importance buoyancy has in the diving community. Wait a minute, what diving community is it important to? As a matter of fact, how many diving communities are there? Why don’t you just think about those two questions while I continue with the first thought.


Buoyancy is all about Archimedes, who was a Greek mathematician/scientist living in the 3rd century BC.archimedes

Using scientific methods he determined that “…an object immersed in a liquid partially or totally is buoyed up by a force equal to the weight of the liquid displaced”.


Well, have you thought long enough on those two diving community questions? The answer is… understanding and mastering  Buoyancy is important in every diving community.

In the recreational diving community the attainment of Neutral buoyancy at any depth is the desired objective to be considered a competent diver. However Positive buoyancy is the most sought after and taught skill for a dive profile to have a happy conclusion. Then there is Negative buoyancy which has become the bain of sport divers and those who teach them.


In the Commercial diving community the knowledge, skills and abilities  (attitudes) when it comes to buoyancy is more a job for job tool and capability. That means that Positive, neutral and negative buoyancy is mission dictated and performed professionally to a successful conclusion.

In the Special Response Diving community Negative buoyancy is king! This community includes Police divers, Public Safety divers, medium_21-280213113545emergency response divers, tactical divers, military divers, forensic divers and any other group that performs underwater search and recovery missions. Believe it or not trying to find something on the bottom while neutrally buoyant is a fools errand. Now some will argue that neutral buoyancy keeps the diver from disturbing the bottom, and that may work once in a while, but if you want to find something on the bottom you must become the bottom. This is achieved only with negative buoyancy. The only way to constantly have a positive resolution to an underwater search is becoming proficient in the use of negative buoyancy.


Remember, in underwater search & recovery you get positive results when negative buoyancy is king!


Written by – Michael W. Gast