1. The first 3 weeks of training is called the indoctrination phase. This prepares candidates for week 4, commonly called Hell Week, in which candidates get a maximum of 4 hours of sleep each day.
2. The total first 7 weeks of Navy SEAL training is the basic conditioning phase. This will train SEALS as well as allow commanders to assess their current physical condition. Candidates are trained mentally, physically and as teams. A person’s competence in the water is also measured. Physical training includes things like swimming, running and general exercises, increasing in intensity each week.
3. The next 8 weeks are the diving phase. Candidates are trained as combat swimmers, as the physical training becomes even more grueling. SCUBA diving in long underwater dives and special techniques set SEALs apart from other forces.
4. Land warfare makes up the last 9 weeks of Navy SEAL training. This is the phase where SEALS are taught about demolition and weaponry. Physical training intensifies and the requirements become more stringent. The last three-and-a-half weeks of this training are spent on an island where candidates put all of the skills they’ve learned during their training like explosives, marksmanships and other techniques to test in the field.