We are Adrem Shipbrokers

We connect people, ships and opportunities

Two women, one focus. Ship sales done right.

  • 50+ years of experience

  • 545+ succesfull transactions

  • Global network of Buyers and Sellers

Who we are

Meet the people behind Adrem Shipbrokers, experienced professionals with a shared focus on clarity, trust and long-term relationships.

Dyanne Thorn Leeson

Shipbroker since 2008, I combine international sales expertise with a passion of people, transactions, and deal dynamics. With an MBA, studies at Lloyd’s Maritime Academy, and my qualifications in the Process Communication Model, I bring clarity, structure, and strategic insight to to S&P negotiations. I don’t just facilitate transactions — I align interests, build trust, and coordinate deals that work for all parties involved.

Madeleine Kooy

I began my career in shipbroking in 1978, where I quickly developed a strong passion for connecting the right vessel with the right buyer. In 1998, I was honored to be appointed as a sworn shipbroker by the Court of Rotterdam—an achievement I continue to take great pride in.

Throughout my career, I have placed particular importance on building long-term relationships and ensuring that every transaction is executed to the highest standard

Our Skillset

Negotiating
Reliability and integrity to enable the best win-win deals. The ability to network, establish trust, and cultivate long-term partnerships.
Guidance
A deep understanding of the coaster, general, and multipurpose vessels market, trends, demands, and fair pricing; all crucial for making informed decisions.
International law
Skilled in the complexity of contracts and international law to get the deal done timeously. Staying updated on regulations and legal aspects of shipping.
Analytical
A deep understanding of vessels’ specifications and financials to accurately assess market conditions and evaluate risks toward the right strategic decision.
Global network
Comprehensive network of owners/buyers. Knowledge of operations and processes to match the right vessel with the right owner in order to mediate the best deal.
Endurance
We never give up, we keep trying, above and beyond to bring every transaction to a good end. We persistently aim to find solutions that satisfy the Buyers and Sellers. Communicating is key to staying out of conflict.
Negotiating
Reliability and integrity to enable the best win-win deals. The ability to network, establish trust, and cultivate long-term partnerships.
Guidance
A deep understanding of the coaster, general, and multipurpose vessels market, trends, demands, and fair pricing; all crucial for making informed decisions.
International law
Skilled in the complexity of contracts and international law to get the deal done timeously. Staying updated on regulations and legal aspects of shipping.
Analytical
A deep understanding of vessels’ specifications and financials to accurately assess market conditions and evaluate risks toward the right strategic decision.
Global network
Comprehensive network of owners/buyers. Knowledge of operations and processes to match the right vessel with the right owner in order to mediate the best deal.
Endurance
We never give up, we keep trying, above and beyond to bring every transaction to a good end. We persistently aim to find solutions that satisfy the Buyers and Sellers. Communicating is key to staying out of conflict.

Our Focus

Adrem Shipbrokers is an independent shipbroker specialising in the sale, purchase and valuation of seagoing general cargo -and multipurpose vessels and cargo tonnage. We assist shipowners and investors in the sale and purchase of ships and provide substantiated valuations for strategic and financial decision-making.

Adrem works with a broad and carefully constructed international network of co-brokers and maritime professionals. These partnerships are based on long-term relationships, local specific market knowledge and mutual trust. This gives us access to buyers and sellers in various regions, often outside the public offering. For our clients, this means greater reach, better market information and more efficient transactions.

Get more value from every ship sale or purchase

Discover what really matters in the shipbroking process, and how to avoid common pitfalls that cost time and money.

Buying or selling a vessel can feel complex – hidden costs, unclear valuations, and inconsistent market information can quickly erode a value.

In our Guide, we share market insights and a clear view of the current state of the market, so you can better understand the trends, risks, and opportunities that matter to your next decision.