The diving phase of BUD/S trains, develops and qualifies SEAL candidates as competent basic combat swimmers. During this period, physical training continues and becomes even more intensive. This second phase concentrates on combat SCUBA. Candidates will learn two types of SCUBA: open circuit (compressed air) and closed circuit. Also, basic dive medicine and medical skills training is provided
Emphasis is placed on long-distance underwater dives with the goal of training students to become basic combat divers, using swimming and diving techniques as a means of transportation from their launch point to their combat objective. This is what separates SEALs from all other US special operations forces.
Successful second phase candidates demonstrate a high level of comfort in the water and the ability to perform in stressful and often uncomfortable environments. Candidates who are not completely comfortable in the water often struggle to succeed.
