Fuel Fraud Alert: "Cappuccino Effect" in Bunker Deliveries

Edition no. 2

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Fuel is the lifeblood of any vessel. During port calls, ships rely on bunker barges to replenish their fuel reserves. However, a sneaky practice known as the "cappuccino effect" can shortchange unsuspecting ships, leading to financial losses and potential operational disruptions.

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What is the Cappuccino Effect?

Imagine a delicious cappuccino – a beverage filled with frothy air bubbles. The cappuccino effect in bunkering works similarly. Unscrupulous bunker suppliers may introduce compressed air into the fuel delivery hose during or after bunkering. This air creates a frothy layer on top of the fuel in the receiving vessel's tanks, making it appear like more fuel has been delivered than the actual amount. Tank soundings, which measure fuel level, will initially show inflated readings due to the air bubbles. Unfortunately, as the air escapes and the foam subsides, the true fuel level drops, revealing a significant shortfall.

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The Financial Impact

The cappuccino effect can have a substantial financial impact on ship owners and operators. Large bunkering operations often involve thousands of tons of fuel. Even a small percentage shortfall due to air bubbles can translate to significant financial losses. Additionally, running low on fuel at sea can lead to delays, rerouting, and potential engine problems, further escalating costs.

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Precautions Against Cappuccino Bunkers

Before Fuel Transfer:

• Reputable Suppliers: Always choose reputable bunker suppliers with a proven track record of ethical practices.
• Contractual Safeguards: Ensure your bunker delivery contract includes clear clauses on how air entrainment will be handled.
• Independent Inspection: Consider engaging an independent inspector to witness the bunkering process and verify the quantity and quality of the fuel delivered.

During Fuel Transfer:

• Monitor the Process: Crew members should closely monitor the bunkering operation, looking for signs of excessive air bubbles in the fuel or unusual noises from the delivery hose.
• Regular Soundings: Take regular tank soundings throughout the bunkering process to identify any discrepancies.
• Flow Meter Readings: Be aware that flow meters might not differentiate between air and fuel, so rely on soundings for accurate measurement.

After Fuel Transfer:

• Final Soundings: Conduct final tank soundings after the air has had time to escape and the foam subsides. This will reveal the true fuel quantity received.
• Protest if Necessary: If the final soundings show a significant shortfall compared to the ordered amount, immediately notify the supplier and file a protest, documenting the discrepancy with clear evidence.

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Identifying Cappuccino Bunkers

• Frothy Surface: Look for excessive froth or foam on the surface of the fuel in the bunker barge tanks during gauging.
• Bubbles: Excessive bubbles on the sounding tape before, during, and after bunkering can indicate air entrainment.
• Hose: Observe if the bunker hose is jerking or whipping around excessively, which could indicate air being blown through the line.
• Delivery Anomalies: Pay attention to slow delivery rates, gurgling sounds near the manifold, or fluctuating pressure gauge readings, as these can be signs of air intrusion.
• Unusual Noises: Unexplained noises from the bunker barge can be a red flag.

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Protecting Your Vessel from the Cappuccino Effect

By taking these precautions and maintaining vigilance throughout the bunkering process, marine professionals can guard against the cappuccino effect and ensure they receive the full amount of fuel paid for. Remember, a keen eye, a healthy dose of skepticism, and clear documentation are key weapons in your arsenal against this deceptive practice.

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Partnering with a Marine Surveyor for Peace of Mind

Marine surveyors like Serene Marine, are highly trained professionals who can play a critical role in safeguarding your vessel from the cappuccino effect. They can witness bunkering operations, verify fuel quantity and quality, and provide independent reports that can be invaluable in case of discrepancies.

Don't let your next bunkering operation turn into a frothy nightmare. Contact us today to learn how our marine surveying services can help you ensure a smooth and reliable fuel transfer.

Contact Serene Marine today to discuss your specific marine survey needs and discover how our team of expert surveyors can help you achieve your goals.