I like the bit about doublers as TC is adament about their non-use.
Since the loss of the MOL Comfort, the line announced that six of her sister vessels will be retrofitted with hull strengthening members, allegedly increasing hull strength to “twice as much” as the safety standard. The classification society and shipyard have been very generic about how they intend to achieve this hull strengthening. They do not specifically mention the customary means, such as external hull doubler plates, inserting interstitial shell plate longitudinals, laying straps on the weather deck, doubling and stiffening internals, or increasing overall scantlings in select locations.
See more at: http://blog.rtiforensics.com/2014/01/13 ... Nhbon.dpuf