Vessel intelligence profile

POTENTIAL_SOURCE

POLARIS — candidate pollution association only. Not a confirmed polluter. Not a criminal profile. Not labelled shadow fleet.

HISTORICAL_DATAINFERRED_DATAUNDER_REVIEW

Identity

Name: POLARIS
MMSI: 477300300
IMO / callsign: not in source materials · not in source materials
Flag / type: HKG · tanker

Listed under Potential Sources in source materials — not confirmed.

Shadow-fleet / deceptive-shipping context

NO SHADOW FLEET INDICATORS OBSERVED

Marine Sentinel prefers “deceptive shipping indicators” and “maritime behaviour anomalies” over a binary shadow-fleet label. “Shadow fleet” is used as a vessel descriptor only when a competent external source classifies the vessel that way and the source is shown. None does here.

This is a pollution-event association case, not automatically a shadow-fleet case.

Attribution language

Label in force: POTENTIAL_SOURCE

Do not upgrade to confirmed without authority finding + evidence.
Association score is explainable and versioned (model 0.1.0).
Geographic proximity alone is never treated as causation.

Why associated with the Nikoi event?

AIS trajectory correlated with slick geometry in source materials
Temporal co-occurrence on 29 April 2025 window
Vessel type (tanker) compatible with oil/bunker hypotheses

Score 0.62

spatial_relationship: +0.22 — Track proximity to reported slick geometry
temporal_relationship: +0.18 — AIS activity on observation date window
track_compatibility: +0.12 — Trajectory consistent with corridor
source_characteristics: +0.10 — Tanker type relevant to oil/bunker class hypotheses

AIS history / gaps

Asserted: no. AIS gap ≠ deception. No dark period is asserted for POLARIS. Defaulting to intentional concealment is forbidden.

Possible explanations if a gap were later reconstructed: unknown, coverage_gap, equipment_issue. Default is not intentional concealment.

Identity anomalies

NONE OBSERVED

Observed: POLARIS / MMSI 477300300 / flag HKG / tanker. Identity inconsistency ≠ fraud.

Rendezvous / STS

STS status: INSUFFICIENT EVIDENCE

STS assessment is opened only when a rendezvous candidate warrants it. None does. Ship-to-ship transfer ≠ illegal transfer.

Ownership / management / voyage

Flag, class, P&I, beneficial ownership, port-call chronology, and cargo context are not loaded. Architected — not faked.

Sanctions / watchlist context

Listed: Not retrieved
Authority: —
Last checked: 2026-09-07
Epistemic: REFERENCE

OFAC / UK / EU / UN / Australian lists are not ingested in this build. Absence of a retrieved listing is not a clearance. Sanctions-listed ≠ polluter. Do not infer sanctions evasion.

Environmental associations

Nikoi 29 Apr 2025 pollution event (candidate association — not confirmed source)
East Bintan marine conservation area (SIDAKO T535) in the wider system — overlap ≠ harm
Coral / seagrass / mangrove extent layers available as receptors, not impact
Tourism receptors (Nikoi / Cempedak context)
Schematic shipping corridors

If this behaviour matters operationally, these systems may also be relevant. Do not infer harm from overlap.

Behavioural indicators

Indicator	Present	Observed	Why it may matter	Alternatives	Confidence
AIS correlation with pollution event	yes	Source materials correlate POLARIS AIS activity with the 29 Apr 2025 slick geometry.	Supports candidate-source review for a pollution event.	Corridor coincidence; Other vessels in the same window; Classification false positive of the slick	MODERATE
AIS gap / dark period	no	No reconstructed gap chronology is available.	A genuine gap near a sensitive area would warrant review — not accusation.	coverage gap; equipment issue; unknown	UNKNOWN
Identity inconsistency	no	Single identity string in source materials (name, MMSI, flag, type).	MMSI/IMO/name mismatch would be an identity anomaly, not proof of fraud.	stable identity; incomplete record	MODERATE
Rendezvous / STS candidate	no	No vessel-to-vessel encounter geometry in this build.	Encounters near receptors would be operationally relevant if sourced.	waiting; supply; coincidence; lawful STS	UNKNOWN
Sanctions / watchlist context	no	No listing retrieved. Lists not ingested.	A sourced listing is context, not behavioural evidence and not evasion.	not listed; list not checked against a live API	UNKNOWN

Behavioural hypotheses

H1 — Ordinary operational presence in a traffic corridor on the observation date
Confidence MODERATE · next: Independent AIS validation for the event window
H2 — Lawful bunkering / supply / service encounter (not identified)
Confidence LOW · next: Do not open an STS assessment without an encounter candidate
H3 — Lawful STS transfer (not identified)
Confidence UNKNOWN · next: Requires a sourced rendezvous before STS review
H4 — Transfer associated with opaque / deceptive shipping behaviour
Confidence UNKNOWN · next: Do not promote this hypothesis without independent corroboration
H5 — AIS / identity issue without transfer
Confidence LOW · next: Multi-provider AIS trail if operationally required
H6 — Insufficient evidence for a maritime-behaviour finding
Confidence HIGH · next: Keep POLARIS as pollution-event candidate only; do not reframe as shadow fleet

Red team: could this be lawful STS, coverage-related AIS gap, stable identifiers, missing imagery, stale listing, or permitted in jurisdiction? No one-way allegation logic.

Multidimensional confidence

Identity: MODERATE
Track: LOW
AIS gap: UNKNOWN
Rendezvous: UNKNOWN
STS: UNKNOWN
Sanctions record: UNKNOWN
Environmental association: MODERATE
Pollution attribution: LOW
Overall intelligence: MODERATE

HIGH rendezvous confidence is not claimed. LOW illicit-activity / attribution confidence is explicit.
Pollution-event association is separate from maritime-behaviour anomaly detection.
This vessel is not labelled shadow fleet.

Intelligence gaps

Reconstructed AIS track and gap chronology
IMO / callsign / registry extract
Independent AIS provider
Sanctions / watchlist API
Port-state inspection / class / insurance
Rendezvous or STS geometry
Satellite confirmation of vessel pair

Missing & contradictory (pollution association)

Missing

Independent spectral classification of slick chemistry
Authoritative discharge confirmation
Full AIS trail validation against multiple providers
Transport / drift model run (Phase 1 not executed)

Contradictory / limiting

No authority finding of pollution offence attached
Alternative natural or third-party sources not ruled out

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