> ## Documentation Index
> Fetch the complete documentation index at: https://docs.appliedaifoundation.org/llms.txt
> Use this file to discover all available pages before exploring further.
# Compliance Surveillance
> PSC, SIRE 2.0, CDI, VIR and CII — five regulatory regimes, one detention-and-commercial-impact view.
A vessel operates inside a regulatory cage made of five overlapping regimes. Each has its own inspectorate, its own scoring system, its own remedy timeline. A finding in one can compound a finding in another. A repeat finding across regimes is the signal that something fundamentally isn't working.
| Regime | Issued by | What it controls |
| ------------ | --------------------------------- | ---------------------------------------- |
| **PSC** | Port State Control authorities | Right to enter and leave port |
| **SIRE 2.0** | OCIMF (oil major vetting) | Eligibility for tanker charter |
| **CDI** | Chemical Distribution Institute | Eligibility for chemical-tanker charter |
| **VIR** | Charterer / inspector inspections | Per-charter performance |
| **CII** | IMO Carbon Intensity Indicator | Annual rating against required intensity |
The **Compliance Surveillance** pipeline reads all five together. Detention risk depends on more than just PSC; commercial-charter eligibility depends on more than just SIRE. The pipeline produces one ranked verdict — what's most likely to bite, in what regime, and what to do about it.
***
## Where the data comes from
Each regime publishes its data through a different surface. The pipeline pulls from each independently:
| Regime | Source |
| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| **PSC** | Port-state-control regime portals (see logo grid below) |
| **SIRE 2.0** | 
**OCIMF** SIRE 2.0 portal |
| **CDI** | 
**CDI** — Chemical Distribution Institute portal |
| **VIR** | Vessel ERP inspection module + email correspondence |
| **CII** | [Emissions pipeline](/skills/emissions) — derived from noon reports + bunker records |
### PSC regime portals
| | MoU / Authority | Region |
| ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------- | --------------------- |
| 
| **Paris MoU** | Europe + N. Atlantic |
| 
| **Tokyo MoU** | Asia-Pacific |
| 
| **Indian Ocean MoU** | Indian Ocean rim |
| 
| **Mediterranean MoU** | Mediterranean basin |
| 
| **Caribbean MoU** | Caribbean basin |
| 
| **Black Sea MoU** | Black Sea region |
| 
| **Abuja MoU** | West & Central Africa |
| 
| **US Coast Guard (USCG)** | United States |
| 
| **Riyadh MoU** | Gulf states |
***
## Regime by regime
### PSC
The most operationally consequential regime. A PSC inspection produces deficiencies and (in severe cases) a detention. Every regime has its own MoU (Paris MoU, Tokyo MoU, Riyadh, AMSA, USCG, Latin American), each with a target factor that drives inspection probability per port call.
The pipeline tracks:
* Open PSC deficiencies (deficiency code, severity, action taken, ranking)
* Detention history (when, where, what was the cause, how long held)
* Repeat themes (same deficiency code appearing on multiple inspections)
* Recent inspection density at the next port's regime
* Crew / SMS deficiencies (often correlated to fatigue, training gaps)
PSC severity vocabulary normalises to:
| Source severity | Internal tier |
| -------------------------------------------------- | ------------- |
| Detainable / Detention recommended | CRITICAL |
| Major / Code 17, 30 (action required at next port) | HIGH |
| Minor / Code 15 (rectify when feasible) | MEDIUM |
### SIRE 2.0
OCIMF's tanker vetting programme. SIRE 2.0 (the 2023 rewrite) replaced binary deficiency findings with a more nuanced observation severity scale:
| SIRE 2.0 severity | Description |
| ----------------- | --------------------------------------------- |
| Severity 1 | Minor — process or documentation gap |
| Severity 2 | Moderate — operational concern |
| Severity 3 | Major — significant operational risk |
| Severity 4 | Critical — vessel may be rejected for charter |
The pipeline pulls historical SIRE observations and the most recent inspection record, classifies findings by severity, and tracks operator response status — observations have a maximum response window after which the OCIMF system marks them outstanding.
### CDI
The chemical-tanker analogue to SIRE. Inspection produces ship and barge inspection reports (SIR / BIR). Same response-window logic; same observation severity tracking.
The pipeline pulls the last-CDI details per vessel and tracks the inspection cycle.
### VIR
Charterer- and owner-led inspections. Variable severity vocabulary, normalised the same way as the [defects pipeline](/skills/defects). VIR findings often pre-empt SIRE / CDI findings — a charterer's inspector finds something today that the OCIMF inspector would have found at the next vetting if it weren't fixed first.
### CII
The carbon side. The [emissions data pipeline](/skills/cii-emissions-microapp-data) handles the data acquisition; the compliance pipeline tracks the rating trend:
* Current attained vs required CII for the year
* Year-over-year delta in attained
* Projected end-of-year rating band (A / B / C / D / E)
* Regulatory consequence: a vessel rated D for 3 consecutive years or E for 1 year requires a SEEMP III update with corrective measures
A CII rating projecting E with 6 months of operating year remaining is a major commercial issue — the vessel may need operational changes (slow-steaming, route modification) or technical changes (engine retrofit) to bring the rating back.
***
## Cross-regime fleet view
A fleet-wide compliance dashboard composes the per-vessel records:
```text theme={"system"}
Vessel Last PSC Findings Detention Last SIRE Sev 3+ Last CDI CII Y-1 CII Y0 Verdict
POSUN Mar 2026 2 minor No Feb 2026 1 N/A C C OK
AQUILA Jan 2026 5 mixed No Dec 2025 0 N/A C D Watch
OCEAN Apr 2026 8 mixed Yes (3d) Mar 2026 2 N/A D E Escalate
NEXUS Feb 2026 1 minor No Jan 2026 0 N/A C C OK
…
```
A reviewer scans the row to spot the structurally exposed vessels: OCEAN here has a recent detention, multiple SIRE Severity 3+ observations, and a CII trajectory dropping from D to E — three regimes pointing in the same direction.
***
## Detention-risk scoring
A weighted composite combines four signals:
$$
R_\text{psc} = w_1 D_\text{open} + w_2 H_\text{detention} + w_3 R_\text{repeat} + w_4 S_\text{sms}
$$
| Signal | Description |
| -------------------- | --------------------------------------------------------------------- |
| $D_\text{open}$ | Open PSC deficiencies in the next port's regime |
| $H_\text{detention}$ | Detention-history recency multiplier (recent detention = higher) |
| $R_\text{repeat}$ | Repeat-finding cluster count (same code, multiple inspections) |
| $S_\text{sms}$ | Crew / SMS deficiency density (fatigue, training, SMS implementation) |
The composite maps to LOW / MEDIUM / HIGH / CRITICAL. HIGH or CRITICAL routes the case to the Technical Superintendent with the contributing factors.
***
## Commercial-impact scoring
A parallel score covers vetting and charterer exposure:
$$
R_\text{commercial} = w_1 N_\text{sire\_open} + w_2 N_\text{cdi\_open} + w_3 \mathbb{1}[\text{CII E projected}] + w_4 N_\text{vir\_open}
$$
A CII rating dropping to E carries a binary indicator weight because the regulatory consequence is binary.
***
## Investigation matrix
When a finding lands, the pipeline classifies it through an investigation matrix:
| Dimension | Categories |
| --------------------- | ------------------------------------------------------- |
| **Root cause** | Technical, procedural, training, documentation |
| **Recurrence** | First-time, repeat (same vessel), repeat (across fleet) |
| **Commercial impact** | Vetting failure, off-hire risk, fuel-cost impact |
| **Time to close** | Hours, days, weeks, months |
A "training" root cause repeating across the fleet is a different conversation than a "technical" root cause on one vessel. The matrix exists so the response is calibrated to the actual problem.
***
## CII trajectory
For the carbon dimension, the analyzer tracks attained CII through the operating year:
$$
\text{CII}_\text{attained}(t) = \frac{\sum_{i=1}^{t} \text{CO}_2_i}{\sum_{i=1}^{t} \text{Capacity} \cdot \text{Distance}_i}
$$
Compared against the IMO required CII for the year and the boundary lines for A–E ratings. A trajectory that's tracking the D/E boundary is flagged early so operational changes can intervene before the year closes.
***
## Worked example
`MV OCEAN`, end-of-April compliance review:
| Regime | Status | Verdict |
| -------- | ------------------------------------------------------------------------------------ | -------- |
| PSC | 8 open deficiencies (3 major, 5 minor); detention 3 days at Houston in March | HIGH |
| SIRE 2.0 | 12 observations from Mar inspection; 2 Severity 3, response window closing in 8 days | HIGH |
| CDI | N/A (not chemical tanker) | — |
| VIR | 4 open from latest charterer inspection | MEDIUM |
| CII | 2025 attained C, 2026 trajectory at D/E boundary, projected E if unchanged | CRITICAL |
Repeat themes:
* Crew familiarity finding in PSC (Houston) and SIRE (Houston, separate inspection) — same root cause, two regimes.
* ECDIS update finding repeats across last two SIRE inspections — procedural gap not closed.
**Verdict**: CRITICAL. Three regimes pointing in the same direction, projected CII E, recent detention, repeat themes.
The pipeline:
1. Routes the SIRE Severity 3 response to crewing — operator response due in 8 days, must not lapse.
2. Routes the CII trajectory to the [voyage pipeline](/skills/voyage) for operational-change recommendation (slow-steaming candidate; route review).
3. Generates a repeat-theme remediation plan covering crew familiarity training across the fleet, not just OCEAN.
4. Flags ECDIS update procedure to QHSE for SMS revision.
***
## What the senior review contains
1. **Headline** — overall compliance posture, detention-risk and commercial-impact scores.
2. **PSC** — open deficiencies with severity, detention history, regime risk.
3. **SIRE 2.0** — observation count by severity, response status, time to response window.
4. **CDI** — last inspection findings, response status (where applicable).
5. **VIR** — open observations, charterer / owner.
6. **CII** — current and projected rating, year-over-year delta, SEEMP III implications.
7. **Repeat themes** — findings appearing across regimes or inspections, with root-cause classification.
8. **Recommendations** — prioritised by deadline and impact.
9. **Escalation decision** — to whom, and why.
***
## Escalation triggers
| Trigger | Severity |
| ----------------------------------------------------- | -------- |
| Detention-risk score = HIGH or CRITICAL | CRITICAL |
| Recent detention (under 12 months) | CRITICAL |
| SIRE Severity 4 observation | CRITICAL |
| Unresolved SIRE Severity 3 past response window | HIGH |
| Projected CII rating E | HIGH |
| Repeat finding across 3+ vessels in fleet (same code) | HIGH |
| 3 consecutive years of D rating | CRITICAL |
***
## Why all five together
A vessel with a clean SIRE record, a clean CII rating, but a fresh PSC detention is in trouble. A vessel with a clean PSC record but a CII trajectory falling off the cliff is also in trouble — different timeline, different audience. Reading the regimes together produces the only honest answer to "is this vessel commercially and operationally compliant?"
Repeat themes across regimes are the single highest-leverage finding the pipeline produces. A one-off finding can be dismissed; the same finding appearing in PSC and SIRE means the underlying issue is real and structural.
***
## References
SIRE / CDI monitoring suite — historical SIRE observations, inspection records, last-CDI details, fleet-wide SIRE / CDI status.
Class CoCs feed PSC detention probability — overlap with the class pipeline.
PSC, SIRE, CDI, VIR findings live in both pipelines — defects gives the operational view.
CII rating is computed from emissions data — that's where the numbers come from.