"The sugar is valued at $5 million," he said.
Another captain, an assistant and a mechanic are expected to arrive from North Korea in the coming days to help sail the ship back to Asia, he added.
The ship was headed from Cuba to North Korea when it was seized by authorities, who said they suspected it carried drugs. A Panamanian official said the ship carried two Cuban fighter jets in perfect condition, contradicting Cuba's explanation that the cargo included "obsolete defensive weapons."
A preliminary report by United Nations experts determined that the seized ship violated U.N. sanctions barring the supplying of weapons to North Korea.