Why supreme court declined to set aside imo judgement

I think there may be some confusion here.

The International Maritime Organization (IMO) is a specialized agency of the United Nations that sets global standards for maritime safety and security. It is not a court that renders judgments.

Therefore, it is not possible for the Supreme Court to decline to set aside an IMO judgment, as the IMO is not a judicial body that renders judgments.

If you meant to ask about a different organization or court, please clarify and I'll do my best to help.