Since that thing holds 1,000,000 liters of fuel, I thought I would see how long that much fuel would carry me at 7 knots. That is 264,200 gallons. For me, 66,060 engine hours, 522,534 miles. If I run the engines 10 hours a day, every single day, I can cruise for 6,606 days, or a few days more than 18 years! I hope to live and cruise that long!
Oops! Better scale back the cruise a bit, I forgot to calculate generator time.