- maintenance and operate of the deck machinery, cargo-handling machinery, auxiliary boiler with all appropriate service system and equipment, fresh water generator, automatic control equipment according superintendence - find out possible reasons troubles and eliminate them - operate and preparation of main engine, turbo and diesel-generators - carried out control and treatment of water - make up the plans of repairs, list of repairs - control repairs making by shore or ship specialists - make up order and take stoke of spare parts and tools