DDE 4000 Merchant mariner credential, TWIC, STCW BST: Basic Fire Fighting, STCW: Personal Safety and Social Responsibilities, STCW BST: First Aid/CPR, STCW BST: Personal Survival Techniques, Medical Care Provider, Advanced Fire Fighting, Leadership and Management, Engineroom Resource Management, Management of Electronic Control Equipment, OMSA - SafeGulf, Lifeboatman. He or She is directly responsible for all maintenance and repair work on board that are necessary to achieve efficient performance of the main engine, auxiliary machinery and deck machinery including deck winch, emergency generator, anchor windlass, lifeboat davit, lifeboat motor, and tuggers.