Vessel intelligence profile

Identity

Name

POLARIS

MMSI

477300300

Flag

HKG

Type

tanker

Listed under Potential Sources in source materials — not confirmed.

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?

• 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

• 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

Missing & contradictory

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

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