The challenge was to ensure that all variable factors were included in the battery capacity calculations. Together with the shipyard, we looked at the consumption at mooring , different speeds at which the ship is sailing, the internal systems, etc. to determine how powerful the batteries need to be to achieve this goal.
Almost three years after completion, an interim calculation was carried out to check whether the goal can be achieved. Currently the forecasts are better than expected. It looks like the goal will be achieved with ease. A later intermediate measurement will give more precision.