{"uid":"cap_sll_eopJNpuWTH4jtYKsq","slug":"sitecheck-trade-energy-dark-fleet-ais-gap-encounter-events-4ae31f7c","name":"SiteCheck Trade & Energy – Dark Fleet AIS Gap & Encounter Events","description":"Dark-fleet signals from Global Fishing Watch: AIS gap events (a vessel switching its transponder off, with off/on positions, gap hours and distance) or at-sea encounters between two vessels (possible ship-to-ship transfers, with both vessels, duration and median distance), filtered by flag and vessel type over the last 1 to 30 days, newest first. Coverage is GFW's (mostly fishing, carrier, bunker and support vessels).","url":"https://api.tradeenergy-api.workers.dev/api/logistics/dark-fleet-ais-gap?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":[],"properties":{"days":{"type":"string","description":"Look-back window, 1 to 30 days (default 7)"},"flag":{"type":"string","description":"Vessel flag as ISO-3 code, e.g. RUS, PAN, CHN (optional)"},"kind":{"type":"string","description":"gaps (AIS off, default) or encounters (vessel meetings at sea)"},"limit":{"type":"string","description":"Events to return, 1 to 50 (default 20)"},"vesselType":{"type":"string","description":"fishing, carrier, bunker, support, cargo, tanker, passenger, other, gear (optional)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"to":"2026-10-23","flag":"RUS","from":"2026-10-09","kind":"gaps","count":3,"total":3,"events":[{"id":"88d3f53e2e1aee39f25095fa217c9943","eez":["5690"],"end":"2026-10-18T10:11:09.000Z","gap":{"hours":35.7,"distanceKm":723.06,"onPosition":{"lat":73.381855,"lon":155.43417},"offPosition":{"lat":74.76762,"lon":132.2130266666667},"impliedSpeedKnots":10.94,"intentionalDisabling":true},"lat":74.0747,"lon":143.8236,"start":"2026-10-16T22:29:12.000Z","vessel":{"flag":"RUS","mmsi":"273336180","name":"S.KUZNETSOV","type":"cargo","gfwId":"2431fcd1d-d93a-326d-315d-f48b9c0e8c70"},"highSeas":false,"distanceFromShoreKm":112},{"id":"e22980cf8250d78b160e2ec3153e1c91","eez":["5690"],"end":"2026-10-13T15:04:06.000Z","gap":{"hours":37.06,"distanceKm":742.1,"onPosition":{"lat":45.45666666666666,"lon":139.5316666666667},"offPosition":{"lat":47.82279666666667,"lon":148.60264},"impliedSpeedKnots":10.81,"intentionalDisabling":true},"lat":46.6397,"lon":144.0672,"start":"2026-10-12T02:00:47.000Z","vessel":{"flag":"RUS","mmsi":"273432830","name":"TAIMYR","type":"other_non_fishing","gfwId":"b7c333074-43d5-4e76-bddc-5ffd73306e64"},"highSeas":false,"distanceFromShoreKm":200}],"source":"https://gateway.api.globalfishingwatch.org/v3/events","checkedAt":"2026-10-23T09:38:01.284Z","vesselType":null}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_t1VRDxzFk1QLB72_W419g","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns recent AIS gap events (transponder off/on) or at-sea vessel encounters from Global Fishing Watch, filterable by flag, vessel type, and look-back window","exampleAgentPrompt":"Pull the last 14 days of AIS gap events for Russian-flagged vessels from Global Fishing Watch — show me up to 30 results, focusing on intentional transponder disabling — I want to see the off/on positions, gap hours, and implied speed for each.","exampleUseCases":[{"title":"Sanctions compliance vessel screening","prompt":"Show me all AIS gap events in the past 30 days for Russian-flagged tankers — I need to check for intentional transponder disabling as part of our sanctions due diligence, with gap duration, positions, and vessel MMSI."},{"title":"Dark fleet encounter monitoring","prompt":"Get me the last 7 days of at-sea encounter events from Global Fishing Watch for carrier vessels, up to 50 results — I want to see both vessel names, how long they met, and the median distance between them."},{"title":"Fishing vessel AIS compliance audit","prompt":"Fetch AIS gap events for fishing vessels over the past 14 days, limit to 20 results — I'm auditing transponder compliance and need to know which vessels had gaps flagged as intentional disabling, along with distance covered and EEZ."}],"resultDescription":"A JSON object containing a list of AIS gap or encounter events with metadata: event IDs, start/end timestamps, vessel details (name, MMSI, flag, type, GFW ID), gap metrics (hours, distance km, off/on positions, implied speed knots, intentional disabling flag), EEZ codes, high-seas flag, distance from shore, plus summary fields (count, total, date range, source URL, and checkedAt timestamp).","failureModes":["Invalid 'kind' value (not 'gaps' or 'encounters') returns an error","Unsupported ISO-3 flag code may return zero results or an error","'days' outside 1–30 range may be rejected or clamped","'limit' outside 1–50 range may be rejected or clamped","Global Fishing Watch upstream unavailability may cause empty or error responses","No events matching filters returns count:0 with empty events array"],"whenToPreferThis":"Choose this endpoint when you need structured, filterable dark-fleet signals (AIS transponder gaps or vessel encounters) sourced directly from Global Fishing Watch, especially for sanctions research, trade compliance, fisheries monitoring, or supply-chain risk involving fishing, carrier, bunker, or tanker vessels. Prefer this over raw AIS live-position endpoints when the goal is detecting suspicious behavior patterns (going dark, rendezvous) rather than current vessel position.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T00:34:28.145Z","isFirstParty":false,"canonicalSlug":"sitecheck-trade-energy-dark-fleet-ais-gap-encounter-events-4ae31f7c"}