Comment by djoldman

3 hours ago

It took a bit of digging but it looks like the ship can operate for 90 minutes without recharging:

> ... the batteries will power eight axial-flow water jets driven by permanent magnet electric motors. These will be able to keep the ship going for 90 minutes before needing to be recharged.

> The ship’s permanent home will be the Rio de la Plata estuary, where it will travel between the ports of Buenos Aires, Argentina, and Colonia del Sacramento, Uruguay. The two cities are 60 kilometers apart, a distance Hull 096 is expected to travel in 90 minutes. Direct-current charging stations will be installed at each port and will draw energy from the two countries’ grids. A full charge is expected to take just 40 minutes.