Why did grant move ships past vicksburg, taking the risk they could sunk?

hi from your options you gave in the comment sections to your question : There's was a lack of needed supplies for the army

There were no confederates in the area

He needed to begin operations south of the city

Grant moved his ships past Vicksburg because There were no confederates in the area

Explanation:

The batteries of the bluffs of the confederates on the River bank could outrun any union Naval ship crossing the Vicksburg hence Grant moved his troops south of  the east bank of River Mississippi taking his men far away from the confederate lines and recrossing to the other side on a narrower part of the River which risked his ship been sunk    

a agree i agree becuase it is very importnat for example it can tlel you about your past for exmaple   the first culture was the semerians which people are sitll tryignt o uncover there secrets the wall is just anohter treasure that has thousnads of secrets in it to be uncovered

it was justfied as english were being brutal to the colonist and they needed to be stopped therfor causing a war but the moral over that is yes it was justifed