---
title: "Vessel events (fishing, encounters, port visits, loitering)"
method: GET
path: "/api/v1/gfw/events"
tags: ["Environment"]
---

# Vessel events (fishing, encounters, port visits, loitering)

`GET /api/v1/gfw/events`

Vessel activity events detected from AIS data. Types: fishing (apparent fishing activity), encounter (vessel-to-vessel meetings - potential transshipment), loitering (vessels stationary at sea), port_visit (arrivals and departures). Each event has position, duration, distances from shore/port, and EEZ/MPA/RFMO region data. Max date range: 366 days.

## Query parameters

- `vessel_id` string — GFW vessel ID (optional - omit for global events).
- `type` string — Event type: fishing, encounter, loitering, port_visit.
- `start_date` string — Start date (YYYY-MM-DD). Default: 90 days ago.
- `end_date` string — End date (YYYY-MM-DD). Default: today.
- `limit` integer — Max results.

## Response `200`

Vessel activity event records with positions, durations and region tags.

- EnvelopeGfwEventsData
  - `data` GfwEventsData, required
    - `event_type` string, required — Event type classifier.
    - `count` integer, required — Number of items in this result set.
    - `total` integer, required — Total count or sum.
    - `date_range` DateRange, required
      - `start` string, required — Start date (YYYY-MM-DD).
      - `end` string, required — End of the data range or time window.
    - `events` GfwEvent[], required — Array of event records.
      - `id` string, required — Record identifier.
      - `type` string, required — Record type.
      - `start` string, required — Start of the data range or pagination cursor.
      - `end` string, required — End of the data range or time window.
      - `lat` number, required — Latitude in decimal degrees.
      - `lon` number, required — Longitude in decimal degrees.
      - `vessel` Vessel, required
        - `id` string, required — Record identifier.
        - `name` string, required — Entity or record name.
        - `ssvid` string, required
        - `flag` string, required — Flag value.
        - `type` string, required — Record type.
        - `publicAuthorizations` PublicAuthorization[], required
          - `hasPubliclyListedAuthorization` string, nullable, required
          - `rfmo` string, nullable, required
        - `nextPort` unknown, required
      - `regions` GfwRegions, required
        - `mpa` unknown[], required
          - unknown
        - `eez` string[], required
        - `rfmo` string[], required
        - `fao` string[], required
        - `majorFao` string[], required
        - `eez12Nm` string[], required
        - `highSeas` string[], required
        - `mpaNoTakePartial` unknown[], required
          - unknown
        - `mpaNoTake` unknown[], required
          - unknown
      - `distances` Distances, required
        - `startDistanceFromShoreKm` integer, required
        - `endDistanceFromShoreKm` integer, required
        - `startDistanceFromPortKm` number, required
        - `endDistanceFromPortKm` number, required
      - `detail` GfwDetail, required
        - `totalDistanceKm` number, required
        - `averageSpeedKnots` number, required
        - `averageDurationHours` unknown, required
        - `potentialRisk` boolean, required
        - `vesselPublicAuthorizationStatus` string, required
  - `meta` SugraMeta, required — Metadata attached to every /api/v1/* response envelope.
    - `endpoint` string, required — Requested endpoint path.
    - `data_time` string, required — ISO 8601 UTC timestamp of the source data, not of the request.
    - `response_time` string, required — ISO 8601 UTC timestamp when this response was produced.
    - `provider` string, required — API name and version.
    - `source` string, nullable — Identifier of the primary upstream source used for this response.
    - `attribution` string, nullable — Human-readable attribution mandated by an upstream source (e.g. a securities regulator or self-regulatory organization). Present only on responses whose source requires the owner and source to be clearly identified. Do not remove or alter it when using the response.
    - `fallback_used` boolean, nullable — True when the primary source failed and a fallback produced the data.
    - `fallback_chain` string[], nullable — Ordered list of sources attempted, in the order they were tried.
    - `cached` boolean, nullable — True when this response was served from the internal cache.
    - `stale` boolean, nullable — True when the cached response was returned after the upstream rate-limited or errored. Clients can use this to detect degraded data.

## Other responses

- `401` — Missing or invalid `x-api-key` header. JSON body with a stable `code` distinguishing `missing_api_key` (no header sent) from `invalid_api_key` (header sent, key not accepted); any other 401 source carries the generic `unauthorized` with its detail as `reason`. Plus `hint`. `plan` is always null on 401 - an unauthenticated request has no plan; quota exhaustion is 429, not 401.
- `422` — Validation Error
- `429` — Daily rate limit exceeded. Check `X-RateLimit-Reset` for the next window.
- `503` — Upstream source is temporarily unavailable. Retry after a short delay.

---

[API](https://skmtc.net/sugra/apis/sugra-api.md) · [All operations](https://skmtc.net/sugra/apis/sugra-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/sugra/sugra-api/versions/4c4530760ba1/schema)