Author: Daniel G. Teleoaca – Chief Engineer Unlimited
I am not sure if you have been watching and noticed the “CII panic” from both sides of the fence lately. In the office, Superintendents are staring at dashboards, watching their fleet ratings slip from a “C” to a “D,” wondering which expensive software or “energy-saving device” they need to buy next.
But if you’ve spent your life with a wrench in your hand, you know the truth: You don’t fix a ship’s carbon footprint in an Excel sheet. You fix it on the deck plates.
Carbon Intensity (CII) isn’t some abstract environmental ghost. It is a direct reflection of mechanical efficiency. If your ship is burning more than it should, it’s because the engine is struggling, the hull is draggy, or the crew is “fighting” the automation.
Here is how we stop the “CII Trap” before it hits the bottom line.
The Scavenge Air Secret
The office looks at the Bunker Delivery Note, but they rarely look at the Scavenge Air temperatures.
A 5°C deviation in scavenge air temperature can lead to a significant increase in specific fuel oil consumption (SFOC). In many engine rooms, the coolers are partially fouled, or the automation is sluggish, and the crew just “lives with it.”
If you want to move a ship from a “D” rating to a “C,” you don’t need a million-dollar wind wing; you need to clean the air coolers and optimize the combustion. It’s basic thermodynamics, but in the rush of daily operations, it’s the first thing that gets neglected.
The Boiler: The Hidden Fuel Thief
When the ship is at sea, the auxiliary boiler should be a ghost. But I’ve seen countless vessels where the exhaust gas economizer (EGE) is so fouled that the oil-fired boiler is kicking in even at high loads.
Every drop of fuel burned in a boiler while at sea is a “carbon penalty” that provides zero propulsion. A professional Chief Engineer manages the steam balance like a hawk. If your soot-blowing routine is lazy, your CII rating will suffer. It’s that simple.
The “Software vs. Reality” Gap
There is a dangerous trend of relying solely on automated data. Sensors drift. Flow meters lose calibration.
I’ve seen “A-rated” ships on a dashboard that were actually burning 10% more than their sisters because the crew was “gaming” the manual entries or the sensors were caked in sludge.
The real value of a Technical Manager isn’t reading the report; it’s knowing when the report is lying. You have to look at the fuel rack position, the turbocharger RPM, and the exhaust temperatures. When those don’t align with the “flow meter,” you’ve found your carbon leak.
The Human Element (The “Eco-Pilot” Mindset)
We can install all the AI-driven route optimization we want, but if the OOW (Officer of the Watch) is constantly fiddling with the pitch or the RPM to “make time,” the efficiency is gone.
Training the crew to understand why we are chasing these numbers is the hardest part of the job. It’s not about “pleasing the IMO”; it’s about the longevity of the vessel and the safety of their jobs. A ship with an “E” rating is a ship that gets scrapped or sold.
The Shift: From Chief to Efficiency Consultant
The reason I’m writing this is because the industry is changing. Owners don’t just need someone to fix a pump anymore; they need someone who can audit the energy health of the entire plant.
This is the bridge that leads from the sea to the shore. By mastering the technical side of carbon compliance, we move from being “mechanical experts” to “strategic assets.” Whether you are on board or advising from your home office, this is the future of our profession.
📈 Optimize Your Fleet’s Performance
Are you struggling with a “D” or “E” rated vessel? Don’t just buy more software. I’ve developed the Chief’s Energy Efficiency Audit Toolkit. This is a 15-point technical inspection designed to find the “hidden fuel thieves” in your engine room.
How to get the Toolkit (PDF):
- Transfer $19.99 via Revolut to:
@danielskh or RO61 REVO 0000 1565 1945 8227 - Include “Energy Toolkit” and your Email Address in the note.
Confirmation: Once the transfer is complete, send a quick screenshot of the confirmation to my WhatsApp or simply an email to cenglog@gmail.com.
