You Do Need power plug adapter while traveling from Sint Eustatius to South Sudan.

Here is Why You Need An Adapter

The outlet and plug type used in South Sudan are C and D and in Sint Eustatius are A, B, C and F. This is how they look like.

Sint Eustatius

In Sint Eustatius, outlets of type A, B, C and F are in use.

Type A

Type B

Type C

Type F

South Sudan

In South Sudan, outlets of type C and D are in use.

Type C

Type D