Silhouette drydock

I have searched and can't seem to find any info for a drydock for Silhouette. I know there was somethings done a couple of years ago when there was the azipod problem, but it was not a lot. Was a dry dock done since then or is one coming up?

Thanks

Check on cruisedeckplans.com. it's a TA site free. It includes information for all cruise lines/ships.