Here comes the long-awaited second edition of MasterTrim, DAN's international competition on buoyancy control in scuba diving.

Last year's edition was a big hit, with the participation of 75 divers from 5 countries, and a thrilling final won by Russian instructor Sasha Karnilovich.

Are you ready to take up the new challenge? The first of four rounds starts on Friday 14th April. Participation is free of charge.

All you need to do is read our guidelines, upload your dive profile on the Diver Safety Guardian logbook, and get the chance to partecipate in the final, which will be held in the magnificent setting of Y-40 The Deep Joy, the world's deepest pool.

By competing, you could get your hands on a load of prizes.