Deck Department:
* Captain: The highest ranking officer on board, responsible for the overall operation of the vessel.
* Chief Mate: Second in command, responsible for the navigation, cargo, and safety of the vessel.
* Second Mate: Assists the Chief Mate in their duties.
* Third Mate: Assists the Second Mate and may be in charge of watchkeeping.
* Bosun: In charge of deck maintenance, cargo handling, and the crew.
* Able Seaman (AB): Skilled seafarer with experience in deck work, including cargo handling, navigation, and maintenance.
* Ordinary Seaman (OS): Less experienced seaman who assists the ABs in their duties.
* Deck Cadet: Trainee who is learning the skills and responsibilities of a deck officer.
Engine Department:
* Chief Engineer: Responsible for the operation and maintenance of the ship's engines and machinery.
* First Assistant Engineer: Assists the Chief Engineer in their duties.
* Second Assistant Engineer: Assists the First Assistant Engineer.
* Third Assistant Engineer: Assists the Second Assistant Engineer.
* Electrician: Responsible for the ship's electrical systems.
* Motorman: Operates and maintains the ship's auxiliary machinery.
* Oiler: Lubricates and maintains machinery.
* Engine Cadet: Trainee who is learning the skills and responsibilities of an engine officer.
Other Departments:
* Steward: Responsible for the cleanliness and upkeep of the ship's living areas.
* Cook: Responsible for preparing meals for the crew.
* Hospital Attendant: Provides basic medical care to the crew.
Additional Ranks:
* Master: Equivalent to Captain, especially for smaller vessels.
* Chief Officer: Equivalent to Chief Mate.
* Junior Officer: A general term for officers who are not yet senior officers.
* Junior Engineer: A general term for engineers who are not yet senior engineers.
Note: This hierarchy is a general overview, and the specific ranks and responsibilities may vary depending on the specific maritime organization, country, and type of vessel.