You Do Need power plug adapter while traveling from North Cyprus to Sint Maarten.

Here is Why You Need An Adapter

The outlet and plug type used in Sint Maarten are A and B and in North Cyprus is G. This is how they look like.

North Cyprus

In North Cyprus, outlets of type G are in use.

Type G

Sint Maarten

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

Type A

Type B