what are the escape hatch requirements for catamarans?

I want to modify the wave breaker under my bridge deck that would require eliminating 4 escape hatches. the boat was built in France in 1996 to what I think is a commercial standard similar to uscg inspection over 12 passengers.

It is now US registered so can I operate private and be insured with this modification?

Would this mod prohibit a uscg 12 pac inspection ?

if I remove the 4 there are still 6 more escape hatches and I don't intend to race.

 

Insurance coverage is a private contract, so the most the company may ask is to have a current survey and valuation.
To get the vessel documented for 12 pac, or any other commercial use, it needs to be built in the USA. You can't get it documented since it was built in France.