Duties of a 3rd Engineer Onboard a Ship

The 3rd Engineer, also called the Second Assistant Engineer, is an important rank in the engine department of a ship. This officer usually looks after machinery such as boilers, fuel systems, auxiliary engines, feedwater systems, and condensers. The specific duties of a 3rd Engineer can vary depending on the ship type and the size of the engine department, but the role always carries significant technical and operational responsibilities. In this blog, let’s explore in detail the duties of a 3rd Engineer onboard a ship.

General Duties of a 3rd Engineer

• Assists the 2nd Engineer in daily engine room operations.
• Takes charge of the 2nd Engineer’s responsibilities if they are unavailable.
• Keeps the Chief Engineer informed about any machinery problems or concerns.
• Ensures that all assigned tasks are carried out safely and effectively.

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Watchkeeping Duties of a 3rd Engineer

• Carries out watchkeeping in the engine room according to the duty schedule.
• Provides assistance during maneuvering operations such as arrival and departure at ports.
• Monitors the performance of cargo-related machinery like ballast pumps, valves, cranes, gantries, and auxiliary engines.
• Performs additional duties as directed by senior engineers.

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Maintenance Duties of a 3rd Engineer

The 3rd Engineer has direct responsibility for the upkeep of several critical systems, including:

• Auxiliary engines, boilers, and exhaust gas economizers (including water treatment and chemical dosing).
• Incinerator and fresh water generator.
• Lifeboat engines and emergency fire pumps.
• Life-Saving Appliances (LSA) and Fire-Fighting Appliances (FFA) in the engine room (regular preventive checks).

If any issues are found with LSA or FFA, the 3rd Engineer must inform and work with the 3rd Officer to resolve them.

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Administrative and Recordkeeping Duties

• Maintains Planned Maintenance System (PMS) records and machinery history files.
• Prepares requisitions and keeps inventory of spare parts under their responsibility.
• Ensures safety posters, instructions, and notices in the engine room are up-to-date.
• Updates Safety Data Sheets (SDS) for chemicals and lubricants used in the engine room.
• Helps in documentation that supports compliance with international safety and pollution-prevention standards.

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Key Performance Responsibilities

Apart from routine duties, the 3rd Engineer must ensure:

• No overdue maintenance or testing of critical machinery.
• All essential equipment is kept in working condition.
• Safety devices are not bypassed or left inoperative.
• All life-saving and fire-fighting systems in the engine room are fully functional.
• Minimum and critical spares are always available in stock.

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Salary of a 3rd Engineer in the Merchant Navy

Like other officers at sea, the salary of a 3rd Engineer depends on the type of vessel and the shipping company. Here is an approximate salary range:

• LPG/LNG Tankers – Highest paying among merchant ships, usually USD 4,500 – 6,000 per month.
• Oil / Chemical / Product Tankers – Slightly lower but still attractive, around USD 4,000 – 5,000 per month.
• Bulk Carriers / Container Ships – Comparatively lower, about USD 3,500 – 4,200 per month.

These figures may vary depending on experience, company policies, and international or national sailing contracts.

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Final Words

The 3rd Engineer plays a vital role in keeping a ship’s machinery reliable, safe, and compliant with regulations. From maintaining auxiliary engines to ensuring fire and safety equipment is operational, this rank demands technical expertise, dedication, and responsibility. Although challenging, the position is highly rewarding—both in terms of experience and salary.

For anyone starting their career in the engine department, the role of a 3rd Engineer provides the perfect foundation for moving up the ranks in the Merchant Navy.

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