# Ballast Water Inspection

*Last updated: 2026-06-26*

> Unlike a routine document check, a ballast water inspection involves active sampling and physical verification of a ship's compliance with the International Convention for the Control and Management of Ships' Ballast Water and Sediments (BWMC).

Unlike a routine document check, a ballast water inspection involves active sampling and physical verification of a ship's compliance with the International Convention for the Control and Management of Ships' Ballast Water and Sediments (BWMC). Port state control officers collect water samples, examine the onboard treatment system, and audit exchange or treatment records to confirm that potentially invasive aquatic organisms—bacteria, algae, invertebrates—are not being transported across ocean boundaries. A valid Ballast Water Management Certificate (BWMC certificate) is a prerequisite for port clearance; deficiencies can result in detention or operational restrictions. The inspection is the regulatory control act, distinct from the ballast water treatment itself, which is the technical process carried out onboard.

**Source:** [https://www.imo.org/en/OurWork/Environment/BWM/Pages/Default.aspx](https://www.imo.org/en/OurWork/Environment/BWM/Pages/Default.aspx)

## Quick Facts

| Property | Value |
|---|---|
| Term | Ballast Water Inspection |
| Language | EN |
| Word count | 112 |
| Last updated | 2026-06-26 |
| Source | https://www.imo.org/en/OurWork/Environment/BWM/Pages/Default.aspx |

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