Boat manufacturer

I am in need of help in identifying a shallow draft magnesium boat. My grandfather had it in Indiana, they gave it to my father who gave it to me. I know it's at least 60 yrs old. There is no hull plate. I did some research and found that Dupont made a similar looking boat called a tank boat that was used on farms. But, this is not one of them. Can anyone out there help me id this boat?

 

Magnesium......really??

 

Mag wheels, mag boats ?

 

I thought it was just aluminum but my aunt recalls gramps saying it was made of magnesium. It's super light, one person can carry it but then again if it was made of aluminum it'd be light too. There is no welding on the boat. This boat was put together using only rivets.

 

Could always take a blow torch to a corner of it and see what happens!

 

An alloy no doubt. And don't worry, aluminium burns fiercely when it gets a go on.

 

It might be related to a Dow Chemical Magnesium Starcraft boat.

What’s a Dowcraft Magnesium boat?

1940(something) 12' Starcraft Magnesium Semi V-Hull
"You can dissolve some copper sulfate in water and put in on a small spot on the metal. Aluminum will do nothing; magnesium will turn black and bubble. Copper sulfate is used for cleaning roots out of sewer drains and is found at any hardware store."

Motorboating (Jan 1946): DowCraft Magnesium Boat, only $325

 

I'll give it a try. Though it's still not getting me any closer to finding out who made it