Every part of the marine economy already works. The system between them does not.
Marinas operate. Boatyards operate. Insurers, brokers, registries — they all do their jobs. The marine industry doesn't lack capability. It lacks a layer that holds the capability together over time. Vessel records evaporate at resale. Service knowledge stays with the person who holds it. A marina has no view of who will berth there next month. The parts work; the system between them is what's missing.