Class 4 (4th Engineer) SSEP 📅 Oct 2025

Exam Question

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

(b) What happens if compliant fuel cannot be obtained in the port of bunkering? (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 Oil under MARPOL Annex VI
The International Maritime Organization (IMO), through MARPOL Annex VI, Regulation 14, establishes strict limits on the sulphur content of fuel oil used on board ships to control Sulphur Oxide (SOx) emissions. These limits are critical for reducing air pollution and preventing environmental damage such as acid rain.
**1. Global Sulphur Cap:**
- **Limit:** As of 1st January 2020, the maximum sulphur content for fuel oil used on board ships operating **outside** designated Emission Control Areas (ECAs) is **0.50% m/m** (mass by mass).

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