Port State Control (PSC) inspections

The "Port state control" section on a vessel page is the vessel's full Port State Control (PSC) inspection history: how often it was inspected, with which deficiencies, when it was detained and when it was released. It is headed by the detention verdict, e.g. "Zero detentions since 2016" or "6 detentions on record".

What the summary shows

The six tiles above the table are visible to everyone, including visitors who are not signed in:

If the vessel has been detained, a "Last detention — date" banner sits under the summary: the port, the memorandum, the release date and how many days the vessel was held, and on the right the number of detentions over the last 36 months. A detention within the last 36 months is shown in red, an older one in amber. The banner is visible to everyone, including visitors who are not signed in.

A vessel with no detentions shows a "No detentions on record" banner in that place; a vessel under a white-list flag with its class in force shows "Eligible for reduced PSC inspection windows" instead, because such vessels are inspected less often.

Where the history comes from

The history combines open port state control data with the official publications of the inspection regimes themselves: Paris MoU, Tokyo MoU, Abuja MoU, Viña del Mar, Caribbean MoU, Black Sea MoU, Mediterranean MoU and the US Coast Guard.

• A ✓ tag on a row means the inspection was checked against that body's official publication, e.g. "✓ Paris MoU" or "✓ US Coast Guard".
• "✓ Tokyo MoU · detentions" and "✓ Black Sea MoU · detentions" — these bodies publish detention lists. The tag confirms the detention itself, not the whole inspection.
• One inspection, one row. A country that belongs to two memoranda (Malta to Paris and Mediterranean MoU, Australia to Tokyo and Indian Ocean MoU) reports to both. Such an inspection is shown once, with both memoranda under the row: "Tokyo MoU / Indian Ocean MoU". A detention from it is counted once too.
• "—" and "No data" — the body did not report a deficiency count. This is not "Clean": "Clean" appears only where zero deficiencies are known.
• Release date — under the "Detained" status: "released 09 Jan 2026 · 2 days". If the body has not published it yet, the row says "release not recorded yet".

What you see signed out, on FREE and on PRO

On FREE, the button under the table reads "Full history · N inspections" with a PRO tag, and a PRO lock sits next to the deficiency count: codes, subjects and detention grounds open on PRO. Rows on FREE open within your free vessel checks.

Signed out, the outcome of the last inspection sits in the sign-up prompt: "Last inspection — 30/03/2026, Paris MoU: 2 deficiencies".

What the vessel card on the map shows

The vessel card on the map has a "PSC Inspections" section — the same history in short form:

• Summary. The verdict for the last 36 months — "Clean record (last 36m)", "Attention — deficiencies (36m)", "Detention in last 36m" or "No recent inspections" — and four tiles: inspections, deficiencies and detentions across the whole history, and the number of inspections over 36 months. The summary is counted on the whole history and is visible to everyone.
• Last inspection. The date; once you sign in, also the port, the memorandum and the inspection type.
• List. The most recent inspections: date, port, memorandum and outcome — the deficiency count, "no deficiencies" or "detained". Where the body did not report a deficiency count, the row states no outcome.

How much of the list you see depends on sign-in and plan:

• Signed out — no list: blurred rows stand in its place and open once you sign in.
• FREE — the five most recent inspections. If the history holds more, the button under the list reads "Full history · N inspections" with a PRO tag and leads to the plans.
• PRO and Enterprise — the five most recent, and the "Show N more" button opens up to ten. If the history holds more, the "Full history — on the vessel page" link opens the vessel page with the full history and coded deficiencies.

Once your free vessel checks are used up, the card looks as it does signed out: the summary stays, the list does not.

How to open deficiencies and the full history on PRO

1. Open the vessel page and scroll to the "Port state control" section.
2. In the "Latest PSC inspections" table, click the number in the "Defs" column — on inspections with coded deficiencies it sits in a frame with an arrow.
3. A list opens under the row: deficiency code, subject and section. The "ground for detention" tag marks deficiencies that led to the detention, where the body publishes it; "class-related" marks deficiencies the classification society is responsible for. The "Listed in the detention list" block holds the deficiencies from the official detention list.
4. To see every inspection, click "Show all N inspections" under the table. "Show the 5 most recent" returns to the short list.

How to get a report with every deficiency

Under the table sits the "Order the report" button: the full inspection report lists the deficiencies of every inspection — line by line, with codes wherever the authority publishes them — plus ship certificates with their validity dates. A vessel with zero deficiencies does not show the button.

PSC history is a signal of a vessel's technical condition and of its risk of detention in the next port.

See also

• Watching a vessel and the detention email
• Full inspection report
• Class, certificates and classification society
• Condition assessment, AI summary and quick answers