Hull material?

JAC1

.
Aug 28, 2019
16
Sirius 21 Pioneer Valley Yacht Club
Hi everyone! I just purchased a 1979 Sirius 21. Here's my first dumb question - what's the hull material? I assumed it was fiberglass, but the previous owner's registration for says it's plastic. Can anyone confirm? Sorry, I'm new to all this.
 
Jun 25, 2004
1,108
Corsair F24 Mk1 003 San Francisco Bay, CA
Fiberglass is also known as fiber reinforced plastic.
 

JAC1

.
Aug 28, 2019
16
Sirius 21 Pioneer Valley Yacht Club
Fiberglass is also known as fiber reinforced plastic.
Thanks for responding. I'm asking because my state's registration lists fiberglass and plastic as different hull materials, so I'd like to confirm which it is.