For too long we have calculated our dive plan on a square profile. We set for constant depth and bottom time to help us define total run time and Total Time to Surface. This process was managed by a rule that dictated, “Plan your dive and dive your plan.” The need for this rule lies in the lack of flexibility that square profiling offers.
Does a square plan resemble the way we dive? What if the diver does not achieve their max depth for the intended time? In that case, the diver should have more bottom time available than previously intended. What if the dive exceeds his planned depth? We will then have less available bottom time. But how will the diver know that limit? Square profiling will not allow for these circumstances. It is inflexible and is therefore incapable of in-water updates.
Diving is dynamic. Square profiling is inflexible. Applying an inflexible approach to a dynamic process is a contradiction of terms and leads to a limited potential.
Trudive, used in tandem with a real-time computer allows for a variable range of depth and time by focusing on Time To Surface. When we quantify the value of our gas in relation to our maximum available Time To Surface, we can then dive within a reasonable range without exceeding our resources of gas to the surface.