Merchant Navy – Rank Chart -

Rank (Deck Department)	Description
Captain (Master)	The highest authority on the vessel, responsible for overall operations and safety.
Chief Officer (First Mate)	Second-in-command, overseeing the deck department and assisting the Captain.
Second Officer (Second Mate)	Manages navigation and chart work; often serves as the medical officer.
Third Officer (Third Mate)	Assists with navigation and safety equipment maintenance.
Deck Cadet	Trainee officer gaining practical experience under supervision.
Bosun (Boatswain)	Senior rating responsible for deck crew and maintenance.
Able Seaman (AB)	Skilled seafarer handling deck operations and maintenance.
Ordinary Seaman (OS)	Entry-level rating performing basic deck duties.
Trainee Ordinary Seaman	New entrant undergoing training to become an Able Seaman.
Engine Department:

Rank (Engine Department)	Description
Chief Engineer	Leads the engine department, ensuring machinery operates efficiently.
Second Engineer	Assists the Chief Engineer in managing engine operations.
Third Engineer	Handles maintenance and operation of engine room equipment.
Fourth Engineer	Entry-level officer assisting with engine room duties.
Engine Cadet	Trainee officer gaining practical experience in engine operations.
Chief Electrician	Oversees electrical systems and maintenance.
Electrician	Maintains and repairs electrical equipment.
Motorman	Skilled rating operating and maintaining engine room machinery.
Oiler	Entry-level rating assisting in engine room operations.
Catering Department:

Rank (Galley Department)	Description
Chief Steward	Manages catering operations and crew welfare.
Steward	Assists in food preparation and service.
Cook	Prepares meals for the crew.
Messman	Maintains cleanliness in dining areas and assists in meal service.

Merchant Navy – Rank Chart