Drain plug-87 Glasstream Caravelle

[Handyman77]

I am a total novice to boating !!!!!!! But enjoy a challenge---
Just got this and noticed there is no drain plug ? The hole is NOT threaded ! Looking for the best way to proceed--

 

[Scott Danforth]

flip-type garboard drain plug

 

[Woodonglass]

Yup Brass and Rubber Compression Drain Plug. They make different sizes. Measure your hole and buy the right size.