#1 Morse, #2 AeroBusiness, #3 MeasureGeo, #4 Starship Lander, #5 Improv, article When Satellites Go Quiet, People Notice, on X Loomer discovers ADS-B. Yay. Welcome to the party. How about you ask what / who said Iran would be a cake walk? Did they think Iran would go like Venezuela? If so, they should resign. Is Iran a threat? Sure, but you kill all the leadership and now we're negotiating with Jafar in HR. I thought we won this "conflict" 50+ times.

#1 Morse#2 AeroBusiness#3 MeasureGeo#4 Starship Lander#5 ImprovArticle When Satellites Go Quiet, People NoticeOn X Loomer discovers ADS-B. Yay. Welcome to the party. How ab...
Marshall Frith

Ship Finder

Ship Finder

Compares public Sentinel-1 radar detections with AIS positions you record or import. A match is a candidate, not an identification. No account, ads, or analytics.

Marshall Tyler Frith

Ship Finder is an iPhone app that compares public Sentinel-1 radar detections with AIS positions you record or import. A match is a candidate, not an identification.

This page is the App Store Support landing for Ship Finder. The browser tool at /ship-finder/ is a separate preview.

What it does

  • Draw a box over water, or pick a preset strait, set a date range, and find Sentinel-1 scenes in the public Microsoft Planetary Computer catalogue.
  • Find bright returns in the radar image and see an estimated length and a confidence for each one.
  • Compare those detections with AIS positions: a bundled recording, a CSV you import, or a live aisstream.io watch with your own key. A detection with no AIS position nearby in the stored window is labelled “unmatched detection (no AIS within window)”. That is a data gap, not an identification.
  • Filter by length and select by confidence, then export GeoJSON, KML, or KMZ on the phone.
  • Build a card tour from the detections you pick, and read a plain-language note on how radar returns work.

Requirements

  • iPhone
  • Internet connection for scene search and the radar image
  • No account. An aisstream.io key is optional and only used for Watch area.

Privacy

Privacy Policy — no account, no ads, no analytics SDK, no Ship Finder servers. AIS positions and exports stay on the phone unless you share them.

Support

Questions, bug reports, or App Store review contact go through the contact form with Ship Finder in the subject. Messages reach Marshall Frith directly. There is no in-app chat.

App Store

iPhone · Bundle com.marshallfrith.prototype.s1checklist