You Do Need power plug adapter while traveling from Saint Vincent and the Grenadines to North Korea.

Here is Why You Need An Adapter

The outlet and plug type used in North Korea is C and in Saint Vincent and the Grenadines are A, B and G. This is how they look like.

Saint Vincent and the Grenadines

In Saint Vincent and the Grenadines, outlets of type A, B and G are in use.

Type A

Type B

Type G

North Korea

In North Korea, outlets of type C are in use.

Type C