Category: Engineering
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EGCS, MARPOL Annex VI, and the Reality at Sea
A Rulebook That’s Simple on Paper Under MARPOL Annex VI, the sulphur oxide (SOx) limit for ships operating outside Emission Control Areas is 0.50% m/m. Many vessels have met this requirement by installing Exhaust Gas Cleaning Systems (EGCS). An expensive, complex machinery designed to allow continued use of high sulphur fuel…
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Water & Oil Don’t Mix
As a large vessel left port, its starboard engine oil mist detector alarms sounded. Watchkeepers found water vapour from the return line. They considered this normal, and re-set the alarms. Soon, the starboard main engine lub oil filter sounded a high differential pressure alarm. This was eventually cleared after the…
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Engineering for Deck Officers – Turning Gear
The turning gear is a reversible electric motor which drives a worm gear which can be connected with the toothed flywheel to turn a large diesel engine. It is used in following cases. A slow-speed drive is thus provided to enable positioning of the engine parts for overhaul purposes. The…
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Engineering for Deck Officers – Turbocharger
What is a turbocharger ? Very basic. Turbochargers can be found on all ships fitted with modern marine diesel engines. It is an equipment which reuses the exhaust gases in order to increase the overall efficiency of the engine by supercharging the air which is supplied to main engine .…
The Deep Draft 