Each Eureka IV robot has approximately 60 arms with a 25-metric-ton payload. The Eureka IV can be reused every 4 hours. So, in 24 hours, 6 missions can be completed, delivering 6 * 25 = 150 metric tons per 24 hours. A fleet of 128  Eureka IV robots can deliver 19,200 metric tons per 24 hours using 4 vessels, which translates to 6 million metric tons per year, assuming ~312 production days a year. (Assuming around 53 days a year when a weather hold is in operation.)