You Do Need power plug adapter while traveling from Sint Eustatius to Cape Verde.

Here is Why You Need An Adapter

The outlet and plug type used in Cape Verde are C and F 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

Cape Verde

In Cape Verde, outlets of type C and F are in use.

Type C

Type F