for submarine duty Must have no record of conviction by civil court for any offense other than minor traffic Moral turpitude offenses are generally disqualifying No history of drug abuse. Required training Submarine ETs (navigation and communications) must complete Basic Enlisted Submarine School, ATT, Tactical Computer and Network Operator, and "A" School at Naval Submarine School in Groton, CT. Electronics Technician Communication (ETR) Electronics Technician Communication Naval Enlisted Classifications Electronics Technician Navigation (ETV) Electronics Technician Navigation Naval Enlisted Classifications Electronics Technician Nuclear Power (ETN) Nuclear-trained ETNs perform duties in nuclear propulsion plants primarily in operating, maintaining, and repairing reactor instrumentation and control systems. ETNs may be assigned as an operator to a nuclear-powered aircraft carrier, as an instructor at a Navy nuclear power training command, or as a technician at a shipyard or other nuclear support facility. Additionally ETNs may volunteer for nuclear submarine service. ETNs are the only rating in the Navy that can qualify as a reactor operator of a naval nuclear propulsion plant. Training ETNs complete several different phases of training in order to be able to operate a naval nuclear propulsion plant. In order to be selected for nuclear training prospective Navy recruits must have a high enough cutscore on the Armed Service Vocational Battery (ASVAB) that score being greater than 88 and the Navy Advanced Placement Test (NAPT) that score being greater than 55%. Prospective nuclear recruits are then sent to Navy boot camp where prospective nuclear trainees are selected in a 50-30-20 ratio to be trained as nuclear machinist's mates, nuclear electrician's mate, or nuclear electronics technicians. Those who are selected to be nuclear electronics technicians then enter the Navy Nuclear Pipeline to train to become an ETN. In the first stage of training in the Navy Nuclear Pipeline, prospective ETNs are trained for six months at the Nuclear Field 'A' School (NFAS) at the Naval Nuclear Power Training Command (NNPTC) in Goose Creek, SC. The curriculum at NFAS includes a mathematics refresher course, basic electronics theory, analog electronics theory (EFUNDS), digital electronics theory, and instrumentation and control equipment (I&CE) theory and maintenance. The curriculum is presented in a high paced manner that ramps up over the term at NFAS in order to prepare students for the difficulties of Nuclear Power School. The curriculum is very similar to that which is presented to nuclear electricians except that nuclear electricians train in electrical motor and