Maritime glossary · Port State Control
PSC
Inspections of foreign-flagged vessels in a port’s waters, run under regional MoUs to enforce international maritime conventions.
Definition
Port State Control is the regime under which a port authority inspects foreign-flagged vessels calling at its ports to verify compliance with SOLAS, MARPOL, the ISM Code, MLC, and other conventions. Inspections are organised under regional Memoranda of Understanding: the Paris MoU (Europe and the North Atlantic), the Tokyo MoU (Asia-Pacific), the US Coast Guard, the Indian Ocean MoU, and others. An inspection ends in a clean release, recorded deficiencies (sometimes with conditions), or in serious cases a detention until the deficiencies are rectified. PSC history is a major commercial signal: a vessel with repeated detentions trades at a discount and can struggle to get charters.
Worked example
A 2018 Paris MoU inspection in Antwerp records 7 deficiencies and a detention for ISM Code non-conformity. That record follows the IMO number for life and shows up in every future PSC risk assessment.
How Vessel Hunter uses PSC
Vessel Hunter pulls the full PSC history per IMO from public registers and surfaces it on the dossier: authority, deficiency count, detention flag, and free-text notes.
Inspection records in the dossier →
Related terms
- ISM CodeInternational Safety Management Code
The mandatory IMO framework for safe management and operation of ships, basis of the Document of Compliance and the Safety Management Certificate.
- SOLASSafety of Life at Sea
The principal IMO convention on the safety of merchant ships, covering construction, fire protection, life-saving, navigation, and more.
- MARPOLMarine Pollution Convention
The IMO convention preventing pollution from ships: oil, chemicals, garbage, sewage, air emissions, sulphur.
- Detention
An order by Port State Control holding a ship in port until serious safety or pollution deficiencies are fixed.
- Flag State
The country under whose laws a ship is registered, which sets the regulatory standard for the vessel.
The bigger picture
PSC is one piece of the commercial maritime picture Vessel Hunter pulls together for shipyards, suppliers, service providers, and port agents. Every vessel record bundles AIS, ownership, inspections, dry-dock history, casualty record, classification status, and a verified contact for the operator decision-maker behind the ship, so the team that reaches out first wins the work.
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