This may also help with counter-diffusion problems. One such method is a reduced gradient approach. A reduced gradient approach starts the stops deeper, but can finish the stops at the same final shallow depth as without the deep stop modification. In other words, there is no additional pressure on a diver during the final long stop. While this has been a simplistic explanation, it makes the point.
Departure uses a different approach.
Instead of working towards a standard final shallow stop by way of some added deeper stops, Departure uses an algorithm that actually calculates all the stops. In this example, the profile shows that it is more efficient to decompress at 20 feet than at a shallower depth. As can be seen, the algorithm that calculates Departure's deeper stops is unique. This algorithm is the foundation of Departure's Minimized Bubble decompression model. Some of our competitors have simply taken other people's numbers such as Buhlmann and put them into a software package with a lot of bells and whistles.