CPA_ais-265828550|ais-265828560Two vessels will approach to approximately 25 m distance within ~0 minutes: "SOFIA" (4 kn) ↔ "CLARA" (7 kn). Reciprocal/crossing course at this close proximity is a collision risk indicator. Automatic CPA calculation — unverified event, early warning signal. 📋 EVIDENCE (AIS · aisstream): "SOFIA" MMSI 265828560 @ 59.3156,18.1100 · 4 kn · heading 151° | "CLARA" MMSI 265828550 @ 59.3159,18.1112 · 7 kn · heading 229° | Timestamp: 2026-09-20 19:35:19 UTC
Fast forward to the AIS position, speed and heading of the two ships; If the closest passage distance (CPA) will fall below 0.5 nautical miles, a warning will be generated.
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