Carl- Not to belittle your concern because asbestos is a serious issue, but the article your link pointed to was discussing a cargo ship which had asbestos dust in the hold after having carried a load of it the shipment before.
I'm not sure how this pertains to cruise ships having asbestos on them.
And I do not doubt that they do. The use of asbestos is not illegal, it is still used today in the US in many applications. It is perfectly safe if applied properly and removed properly. The dangers come when used where its dust can escape and be breathed.
Carnival Cruise Lines:
Fantasy 90, Celebration 95, Victory 05, Conquest 05, Spirit 6/06, Freedom 6/08, Holiday 7/08, Victory 6/09, Valor 9/09, Dream 6/10, Splendor 8/10,Conquest 8/11,Magic 11/11,Triumph 4/12,Spirit 7/12,Freedom 11/12, Triumph 2/13 - The fire cruise
NCL Dream October 2006, RCCL Mariner OTS June 2007, Celebrity Silhouette 2013