Inspection regime
Port State Control
Port State Control is the inspection every ship meets, whatever the trade. Our coverage of deficiency and detention patterns, concentrated inspection campaigns, and the engine-room items that keep coming back.
Written for: Masters, chief engineers, superintendents and DPAs.
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Bunker survey guide: how a chief engineer verifies the fuel actually delivered
Chief engineers verify delivered bunker fuel through gauging, trim corrections, temperature adjustments, MARPOL sampling and reconciliation.
Read the guide →What we’ve covered, by flag and vessel type
Counts from apeks.tech’s own PSC coverage — not an industry-wide statistic. Updates automatically as we publish.
By flag
- Panama2
- Liberia2
- Marshall Islands2
By vessel type
- General Cargo12
- Tanker10
- Dry Bulk10
- Container6
More on PSC
The engine room detains the ship: what 52,000 port state control inspections in 2025 reveal
Port state control inspections of 52,020 ships in 2025 found 141,965 deficiencies and 1,943 detentions, with engine room failures being the leading cause.
Paris MoU detention rate reaches 4.18% — but the longer view complicates the story
Paris MoU detention rate rises to 4.18% in 2025 from 4.03% in 2024, returning to 2022 levels.
RightShip's age threshold drops to 11 years — and its own PSC data explains why
From July 1, 2026, RightShip inspections will be required for dry bulk and general cargo ships aged 11 years and over based on PSC risk data.
What a CIC actually costs: 30 detentions traced to one ballast water question
Tokyo MoU's 2025 ballast water campaign: 9,244 inspections, 184 detentions traced to one deficiency code in concentrated inspection drive.
Ballast water management: where compliance actually fails
Ballast water treatment systems fail compliance due to inoperable equipment, record errors, sediment problems, and inadequate operational discipline.
The most common engine-room inspection risks — and why they recur
Port state control inspectors repeatedly find deficiencies in oily-water separators, quick-closing valves, emergency systems, hot-surface lagging and bilge
Apeks Brief
Decision intelligence for the people who run ships: what changed, who is affected, what to do.