You Do Need power plug adapter while traveling from Saba to Madagascar.

Here is Why You Need An Adapter

The outlet and plug type used in Madagascar are C and E and in Saba are A and B. This is how they look like.

Saba

In Saba, outlets of type A and B are in use.

Type A

Type B

Madagascar

In Madagascar, outlets of type C and E are in use.

Type C

Type E