That was the message from keynote speaker Jason Klopfer to an audience at the annual Miami Cargo Conference, sponsored by the Association of Ship Brokers and Agents (ASBA).

"We know what we know and we know what we don't know," Klopfer said, explaining a three-pronged focus on long-range (LR) products carriers, chemical tankers and VLCCs.

"It's why (liquified petroleum gas), for example, is not a viable investment opportunity.