Lone star rivet size?

[d-camarena]

Does anyone know what size rivets lone star used? My boat is a 1960 king commander.
I can tell it has 2 different size rivets. Trying to fix a leak the right way. Thanks

 

[BigTerp]

You're going to have to remove the rivets to replace them anyway, and during removal you could wallow out/widen the hole needing a bigger size than original. So I would go ahead and remove the ones in question and then measure to figure out exactly what you need.