I purchased a used 44DS early in 2023. I wondered about the individual capacity of each of the three tanks that came with the boat but there were no answers. Even the total capacity is questionable over forums and old "one-sheets." I recently bought an inexpensive flow meter and here are the capacities: Forward Tank = 80 US Gal; Port Tank = 34 US Gal; Starboard Tank = 30 US Gal. These measurements are ±.5 US Gal due to the capacity of the filler and drain hoses connected to each tank.