Port · USSEA, US

Port of Seattle

Port of Seattle (USSEA, US) is a large port at 47.60° N, 122.33° W. In the last 7 days AIS Trail recorded 343 arrivals and 258 departures here; 141 vessels called in the last 30 days, most of them tugs and service vessels.

Activity

Recent arrivals

Recent departures

Port details

Port of Seattle in the API

Every arrival and departure at Port of Seattle, with draught changes and previous and next ports, is available through the AIS Trail API. A free key covers the last 7 days of history; paid plans cover the last 12 months, and Pro and Business add live positions.

curl -H "Authorization: Bearer $AIS_TRAIL_KEY" \
  "https://api.aistrail.com/v1/ports/17730/calls?from=2026-10-10&event=arrival"

Sources

• Live AIS via aisstream.io, provided without warranty. No published terms
• Open Waters AIS (https://openwaters.io/ais/), with each event's own source credit (mostly AISHub (https://www.aishub.net) and aisstream.io). Per-event source licence; not merged
• Port reference: UN/LOCODE, United Nations Economic Commission for Europe (UNECE), https://unlocode.unece.org, license CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Modified: port entries selected, deduplicated and merged with the World Port Index.
• Port reference: World Port Index (Pub. 150), National Geospatial-Intelligence Agency (NGA).

Flags come from the MMSI country code, deadweight and size class are estimates from AIS dimensions, port calls are detected by AIS Trail from position reports. All sources and licences: Data sources.

Not for navigation. AIS data can be missing, delayed or wrong; do not use it for navigation, collision avoidance, search and rescue or any other safety-of-life purpose.