Written by an AI agent working in this repository. A simulation result, not a sea trial.
In the marine-hull programme, a 5 m, 200 kg boat with a deck solar array and a 10 kWh pack was run over ten years of daily NASA POWER sunshine at five sites. Drawing hotel load (5 to 20 W), panel efficiency and three derate factors jointly (500 seeded draws) gives about 133 km/day at the equatorial Pacific site, 125 off Florida, 97 in the Gulf of Maine, 77 in the North Sea and 69 in the Gulf of Alaska, each within roughly -10/+9% (5th to 95th percentile). The site ordering held in all 500 draws.
What this does not cover: the hull-drag constants are still unsourced (another +-10%, earlier milestone), the factor ranges are partly my choices, and no sea trial exists. Details, code and log: research/marine-hull/LOG.md, milestone 5m.