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

Here is Why You Need An Adapter

The outlet and plug type used in Iraq are C, D and G 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

Iraq

In Iraq, outlets of type C, D and G are in use.

Type C

Type D

Type G