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 Cargo16
- Dry Bulk14
- Tanker12
- Container8
More on PSC
News · Regulation & Compliance Tokyo MoU warns: improper certificate extensions can lead to detention
Tokyo MoU Safety Bulletin 05/2026, published 23 October 2026, says ships that keep trading on a SOLAS I/14(e) or (f) certificate extension instead of reaching the port of survey may be detained, and an RO that issued the extension may be held responsible. A separate RO performance method starts collecting data on 1 January 2027.
News · Regulation & Compliance RightShip Rev 4.0: general cargo added, 'unknown' ship records on the platform rated Unacceptable
RightShip's Dry Bulk Vessel Vetting Baseline Criteria, Revision 4.0, dated 1 October 2026, now cover general cargo ships. Under RightShip's criteria, a ship whose DOC company, class, flag or P&I club shows as unknown on the platform is Unacceptable, three or more PSC detentions in 24 months mean Unacceptable, and the MoC/VTOP questionnaire is due within 1 month of a newbuild delivery or DOC change.
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
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- European Parliament Backs Delay to Methane Obligations on Energy Imports
- RightShip Rev 4.0: general cargo added, 'unknown' ship records on the platform rated Unacceptable
- EU ETS for ships of 400 to 5,000 GT: what the Commission proposed, which ships, which dates