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Class 4 (4th Engineer) SSEP 📅 Apr 2025

Exam Question

(a) What are the sulphur limits for fuel in use under MARPOL? (5) 

(b) What happens if compliant fuel cannot be obtained in the port of bunkering? (5) 

(c) What if the sulphur analysis resulting from a commercial analysis does not match the bunker delivery note? (5) 

(d) What are the timelines for installation of "in use" fuel sampling points on ships? Does it apply for existing ships? (5) 

Reference Answer

### (a) Sulphur Limits for Fuel in Use Under MARPOL
The sulphur content limits for fuel oil used on board ships are stipulated in Regulation 14 of MARPOL Annex VI. These limits are critical for controlling emissions of Sulphur Oxides (SOx), which contribute to acid rain and respiratory illnesses.
1. **Global Sulphur Cap**:
* Effective from **1st January 2020**, the global limit for sulphur in fuel oil used on board ships is **0.50% m/m** (mass by mass).

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