In the mid 80's there use to be a company called #8220;Super Ship Models#8221; who built
GRP hulls and super structures in 1:72 scale and they produced the USS Nimitz.
The hull and deck came in three parts and the island structure was also included.
It had built in ballast tanks and came out at over 15 feet long.
FSM did a featured on it in the August 87 issue Vol: 6 No: 8 issue.
I have the plans and instruction books somewhere.
Would love to do a project that size.
Regards,
Beau.