Unit groups and their descriptions

Code	Title	Major group	Sub-major group	Group	Occupations
3151	Ships` engineers	Technicians and associate professionals	Science and engineering associate professionals	Ship and aircraft controllers and technicians	6
3152	Ships` deck officers and pilots	Technicians and associate professionals	Science and engineering associate professionals	Ship and aircraft controllers and technicians	8
3153	Aircraft pilots and related associate professionals	Technicians and associate professionals	Science and engineering associate professionals	Ship and aircraft controllers and technicians	15
3154	Air traffic controllers	Technicians and associate professionals	Science and engineering associate professionals	Ship and aircraft controllers and technicians	7
3155	Air traffic safety electronics technicians	Technicians and associate professionals	Science and engineering associate professionals	Ship and aircraft controllers and technicians	3