Painting: a golden ship sails out to sea at sunrise while the blinded giant Polyphemus looms in the clouds above.

Nereus

Ships at sea. Running now.

Ulysses Deriding Polyphemus, J. M. W. Turner, 1829

Ships at sea

A reported position is either possible for that hull, or it is not.

Each report is held to the one before: the distance, the time between them, and the speed and turn that hull could have made. Where a radar satellite passed overhead, its image is a second witness. When the data cannot settle it, the answer says so.

Ships dragged across the eastern Gulf of Finland, October 2026
119
The speed their reported positions implied
65 kn