Our services

A De-Bunker Survey is an essential marine operation conducted to verify the quantity and quality of fuel remaining onboard a vessel before it is offloaded. As fuel costs rise and regulatory scrutiny increases, ensuring that de-bunkering is conducted accurately, safely, and in compliance with maritime standards is more critical than ever.

At Bashan & Gilead Marine Services (BGMS), our experienced and independent surveyors deliver transparent, defensible, and efficient de-bunker surveys that protect all stakeholders involved—from shipowners and charterers to port authorities and terminal operators.

De-bunkering is often necessary due to:

• Fuel contamination
   
• Fuel incompatibility
   
• Engine safety concerns
   
• Commercial reasons (e.g., redelivery or fuel changeover)
   

Without proper verification, fuel loss, contamination disputes, and regulatory penalties can occur.

Our surveyors follow a meticulous process aligned with international standards:

🔹 Fuel Quantity Verification
– Precise measurement of the fuel remaining onboard using industry-standard tools and approved methods (e.g., tank soundings, mass flow meters).
– Ensures that the reported de-bunkered quantity reflects reality.

🔹 Fuel Quality Assessment
– Sampling of the remaining fuel is conducted at appropriate points.
– Laboratory analysis is performed to determine conformity with ISO 8217 specifications and contractual quality benchmarks.

🔹 Procedure Compliance Check
– Review and oversight of the de-bunkering process, ensuring it is conducted safely, efficiently, and in line with port and IMO regulations.

🔹 Documentation Verification
– Examination of all relevant documents including:

• Bunker Delivery Note (BDN)
   
• Vessel’s logbook
   
• Transfer logs
   
• Sampling records
   

This ensures that the de-bunkering aligns with commercial and regulatory obligations.

• ✅ Prevents fuel loss or misreporting
   
• ✅ Avoids potential quality disputes
   
• ✅ Ensures regulatory compliance
   
• ✅ Protects shipowner and charterer interests
   
• ✅ Supports legal or insurance claims when needed
   

De-bunkering can be a sensitive and high-value operation. BGMS delivers the clarity, professionalism, and independence required to minimize risk and maximize transparency throughout the process.

Let us help you safeguard your fuel assets—from delivery to offload.