Just removed the interior skin of a 75 27' landyacht, of the 8 interior ribs, 4 were cut and sections where removed, for windows, ac unit, etc. How is this possible? The skin is holding it up, they couldn't of moved a rib over? What engineer signed off on this? Commonsense tells me this is wrong. This unit was untouched till today, so this is how it left the factory. I know it's been on the road for 45 years, but is this structurally sound? As an old builder, I've seen it all, but this is really disappointing.
On top of this, there is no framing in the end caps. How do you install segmented aluminum or wood endcaps with no attachment except to the exterior skin?