Discovered by Redditor Reowyn.
The codes give 1 day of premium and a port slot.
Follow instructions on this site.
- Register an account (10min mails working!)
- Download/Install program
- Start it, click on “Razr Comms”, search for “warships” and join the “sub”
- Go back to the promo Website and “Verify account”
- The code is immediately displayed when all steps were successfully processed
For all regions! (even EU!! -edit: obviously no RU) Have fun.