A unit of Zeaborn Ship Management has pleaded guilty to recordkeeping violations associated with dumping oily bilge water and garbage at sea.

Zeaborn Ship Management (Singapore) agreed to pay of $2m for maintaining false and incomplete records on the 50,700-dwt open hatch carrier Star Maia (built 1998), the US Justice Department said.

The company pleaded guilty in a US federal court in San Diego to two felony violations of the Act to Prevent Pollution from Ships, a law that codifies International Maritime Organization environmental rules.