Measured product lead custody receipt.
MIT Ship Spiral Design Engine
Five-discipline design spiral · ZeroShip · Hull 20098 proving article · github.com/Zer0pa/ZeroShip
Global shipping carries roughly 80% of world trade and still burns the dirtiest fuel afloat. ZeroShip is the in-silico form of the MIT design spiral — hydrodynamics, propulsion, structure, arrangement, stability — running on one vessel concept until every discipline agrees on the same ship.
Hull 20098, a 10,955-tonne hydrogen-electric freighter at 14.36 MW installed power and 23 knots service speed, is the first public proving article. The page shows what the spiral converged on, and what it has not yet been asked to answer.

Five disciplines have always read the hull; never simultaneously, never from the same vessel concept.
Iterate the spiral until the disagreements stop; that is the ship.
Ship design still runs each discipline in turn — hydrodynamics, then propulsion, then structure, then stability. By the time they all weigh in, the first assumptions are already stale and every team has answered a slightly different ship.
ZeroShip runs all five through the same loop — hydrodynamics, propulsion, structure, arrangement, stability — each pass informing the next until the design converges on one ship. Hull 20098 sits in the loop today at 10,955 tonnes, 14.36 MW installed power, and 23 knots service speed; the page also names where the spiral has not yet been run.
Four spiral passes name what holds and what does not.
The spiral governs what is public and what is not.
ZeroShip is the in-silico form of the MIT design spiral: five disciplines — hydrodynamics, propulsion, structure, arrangement, stability — cycling through the same vessel concept, each pass informing the next. The public page describes how the platform is organised, where Hull 20098 currently stands, and what the spiral is not yet claiming. Implementation source, detailed geometry, flow-analysis archives, OEM and partner data, and live engine operation stay private. A reviewer reads the shape of the spiral and a checked list of what is held back — not the working files behind it.
No public implementation code, no package manifest, no PyPI project, no wheel, no command-line tool, no hosted service, no private geometry, no flow-analysis archives, no OEM data, no partner data, no vessel-status promotion, and no authorized restart of the live engine. Copy cannot close this boundary; named public evidence must.
FIVE DISCIPLINES, one ship.
The aim is a shared design workspace where hydrodynamics, propulsion, structure, arrangement, and stability pass through one in-silico spiral until a hydrogen-electric vessel coheres. Hull 20098 is the proving article. What it lets a yard, a class society, or a financier do depends on the public evidence still being built.