Cargo Estimation

Draft survey

A draft survey estimates cargo quantity from the change in a vessel's draft (how deep it sits in the water) between arrival and departure, combined with its deadweight tonnage and hydrostatic characteristics. Overwatch applies this at scale: when a ship sinks deeper after loading, the draft delta and DWT produce a tonnage estimate — the core mechanism behind weekly grain export estimates.

See how this fits into the platform: Axiom Overwatch · pricing