U.S. District Court Judge Helen Gillmor on Thursday ordered a Singaporean shipping company to pay $1 million for its failure to maintain an accurate oil record book and making false statements on the illegal dumping of oil- contaminated bilge water at sea.

Hai Soon Ship Management of Singapore pleaded guilty to the charges June 14.

Hai Soon Ship Management is operator of the 3,878-ton oil tanker Hai Soon 39, which provided refueling services to fishing vessels operating at sea, according to court documents.

Pursuant to its plea agreement with the U.S. Attorney’s Office, Hai Soon Ship Management’s vessels operating in U.S. waters will be placed on a two-year probation and required to comply with a comprehensive environmental compliance plan.

Regular inspections of the plan will be conducted under an independent auditor’s supervision.

International and U.S. law requires vessels like the Hai Soon 39 to use equipment to prevent the discharge of oil-contaminated bilge into the sea. When overboard discharges occur, they must be logged in an oil record book, which is inspected by the U.S. Coast Guard.

The failure to maintain an accurate oil record book is a violation of the Act to Prevent Pollution From Ships.