Eureka III delivers four dry metric tons of nodules every 4 hours. Eureka III delivers 4 dry metric tons. Each Eureka IV will deliver 12 metric tons. The breakdown of the mission time for Eureka III is as follows:

  1. Launch Eureka from the transport vessel to the ocean: 2 minutes
  2. Dive Eureka to the seabed at 5km depth: 70 minutes (~1.2 meters per second)
  3. Harvest nodules to fill Eureka payload: 60 minutes
  4. Rise Eureka up the 5km water column: 70 minutes (~1.2 meters per second)
  5. Recovery of Eureka from the ocean to the transport vessel using our Smart Launch and Recovery System (SLARS): 5 minutes
  6. In parallel on the vessel: 25 minutes
    a. Unload the Eureka payload of nodules to the transport vessel
    b. Swap the Eureka battery for a fully charged new battery pack
    c. Fill the buoyancy tanks for the next mission
    d. Eureka vehicle maintenance
    e. Download of mission data
    f. Upload of the next mission

Total = 232 minutes or ~4 hours. So in 24 hours, 6 missions can be executed per Eureka III.

Please also see Question I.1 How do you scale to high production rates?