Class 2 (2nd Engineer) MEKG 📅 Nov 2022

Exam Question

With respect to bunkers handling on ships using LNG as alternative fuel, discuss the following:

(a) How are the bunkers taken onboard ships tanks?

(b) Discuss the check lists, arrival checks and factors to be considered for bunkering?

(d) Explain how the bunker is prepared and used onboard the engines?

Reference Answer

### (a) LNG Bunkering Procedure Onboard
LNG (Liquefied Natural gas) is transferred to the ship's fuel tanks as a cryogenic liquid at approximately -162°C. The process is governed by stringent safety protocols under the IGF Code. The primary methods are:
1. **Truck-to-Ship (TTS):** Common for vessels with smaller LNG tank capacities. A specialized cryogenic tanker truck is positioned on the quay alongside the vessel.
2. **Ship-to-Ship (STS):** A dedicated LNG bunker vessel moors alongside the receiving ship. This method is used for larger quantities and is becoming increasingly common.

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