About the Starship Titanic and joules/accelerations.

Upon discovering the Starship Titanic while doing some research about time travel, I was wondering what joules would be necessary to accelerate even faster to attempt a more severe time dilation: Namely, a 50,000kg ship to 99.999999999%C. Am I correct in my calculations that this requires app. 1x10^30 joules?



If not, what are the joules required to do so? And what would the peak wattage be if I am accelerating said ship over 1 year?



Thanks.