New hull designs and electric pod drives have reduced ambient noise in staterooms by 19 decibels compared to the previous fleet. For light sleepers, this represents a radical improvement—better than any land-based hotel in the same class.
If you can share the exact source (forum thread, video comment, etc.), I can give an even more precise interpretation. Otherwise, this should help you navigate the Oceane Dreams library like a pro. oceane dreams sets 19 25 better