The Role of a Bunker Detective in Protecting Shipowners and Charterers

The maritime industry is the backbone of global trade. More than just transporting cargo, it keeps the world’s economy moving by connecting producers, consumers, and financial markets across every continent. Every day, billions of dollars in commodities, energy products, and raw materials are transported by sea, making shipping one of the most critical industries in the global economic cycle.
Behind every successful voyage, however, there is a complex operational structure. Shipowners entrust their vessels to charterers, while many rely on professional ship management companies to oversee daily operations. Between these stakeholders lies a crucial responsibility: ensuring that every operational detail is executed correctly, transparently, and without unnecessary financial loss.
Throughout my career, I have personally participated in more than 2,000 physical On-Hire, Off-Hire, Bunker Quantity Survey (BQS), and ROB survey operations. What makes this experience unique is not simply the number of surveys completed, but the opportunity to conduct them across multiple continents and in vastly different operational environments.
Every port has its own operational culture.
A challenge encountered in Singapore is rarely the same as one faced in Shanghai. The operational risks in Malta differ significantly from those in Houston, Mauritania, Pakistan, or many other ports around the world. Regulations, working practices, communication styles, terminal procedures, and local attitudes all influence the outcome of a bunker operation.
These experiences have taught me one important lesson: technical knowledge alone is never enough.
The success of a bunker survey depends on the seamless cooperation between the charterer’s operations department, the shipowner’s representatives, and the marine survey company. Equally important is maintaining continuous communication throughout the operation. Maritime operations do not stop after office hours, and neither do operational risks. Effective coordination requires professionals who can communicate clearly, remain available 24 hours a day when necessary, and make sound decisions under pressure.
As a surveyor, regardless of which party you represent, your objective remains the same: deliver the most accurate and professional service possible.
The maritime industry is highly competitive. Every mistake can have financial consequences, contractual disputes, or reputational damage. This creates constant operational pressure, making every survey far more than a routine inspection. Each assignment demands complete focus, technical competence, and disciplined execution.
Consider a bunker operation as an example.
The responsibility of a surveyor begins long before fuel is transferred. From the moment you leave the shore and board the service boat until the moment you safely return after completing the operation, every observation matters. Every movement, every communication, every operational detail, and every unexpected event should be documented carefully.
Potential risks must be identified before they develop into problems. Communication with the bunker barge, vessel personnel, terminal representatives, and operational teams must remain professional, timely, and transparent throughout the entire process.
The objective is straightforward: ensure that the agreed quantity of fuel is delivered correctly while protecting the commercial interests of the client.
Reality, however, is rarely straightforward.
During an international career, every experienced surveyor will eventually encounter individuals whose priorities may not always align with transparency or best industry practices. In such situations, technical expertise alone may not be sufficient.
One of the most overlooked factors in a successful bunker operation is having a strong operational team standing behind the surveyor. When the surveyor knows that experienced operators are available at any hour to support critical decisions, coordinate with stakeholders, and protect the client’s contractual position, the entire process becomes significantly stronger.
There are ports where the surveyor’s authority alone may not be enough to resolve operational challenges. In these situations, rapid support from the operations department can become the decisive factor that allows the survey to be completed professionally and successfully.
This is why communication is just as important as measurement.
A professional surveyor should never simply submit figures. Every observation, operational concern, potential risk, and recommended action should be communicated clearly to the client. Information only creates value when it helps decision-makers reduce risk and protect their commercial interests.
After more than sixteen years in the maritime industry, I have come to believe that being a Bunker Detective is not about searching for mistakes. It is about understanding the entire operational picture, anticipating risks before they escalate, and ensuring that shipowners and charterers are protected throughout every stage of the voyage.
Modern bunker investigations require much more than technical calculations. They require experience gained across different ports, different cultures, different regulations, and different operational environments. Every operation contributes another lesson, and every lesson strengthens the ability to identify risks that cannot always be seen on paper.
In today’s shipping industry, professionalism is measured not only by what a surveyor observes onboard, but also by how effectively that information is transformed into practical solutions that protect clients from unnecessary financial exposure.
That is, ultimately, the true role of a Bunker Detective.

About the Author
Baturalp Alkan is a Marine Surveyor and Bunker Detective with over 16 years of experience in bunker quantity surveys, hidden fuel investigations, off-hire surveys, and voyage performance analysis. As General Manager of Vals Marine Survey, he has participated in operations across Europe, Africa, South America, and Asia, helping shipowners and charterers protect their financial interests.