Size requires innovation in all kinds of context, this is a narrow view. What about earth moving equipment, skyscrapers, IT systems, etc. ?

I'm sure it required at least 1 bit of special tooling, capacity, or engineering. Ignoring downstream innovation challenges, like the bridge. You don't think there is an opportunity for innovation there? Maybe they make improvements when they replace it

I think it’s common to underestimate the hidden complexity in things. Even the smallest widget can contain surprising amounts of innovation. Take the diminutive Apple iPhone Wall Charger - that little wart is the culmination of decades of safe and efficient AC/DC design.

A biggest in the world sailing yacht will have hundreds of innovations just in construction of the masts. All the rigging is likely custom materials and hardware, they are probably using exotic techniques in all sorts of ways.

No average sailor will ever use these "innovations" tho.

Also you don't necessarily want to innovate too much when you want to build something reliable.

Boats at this calibre take months if not years to iron out all the build kinks - it's custom made after all.

I'd love someone like Bezos or Musk to build a robotic dry stack of e-boats for public to use by subscription basis - something that can actually take innovating, can be scaled everywhere in the world, has positive impact (grid balancing) and is useful.