Keggle ?

Found some kegs for a good price but they look a little different to me. Could you help educate a n00b? The keg i found is similar to the one that is second from the left in this picture

http://www.usaveliquors.com/kegs.html
(red and blue stripe)

three questions
1) Can you use this for a keggle
2) If yes what do i use to plug the whole in the side so I can boil wort
3) what is the capacity of these types of kegs.

Thanks for any info. Sorry to make you visit a link, I am planning on joining, but my card is in my car and I'm too lazy to go get it right now. Thanks.

You could use this as a keggle but the hole in the side would have to be welded shut or plugged in another manner, maybe useful for a port for something depending on the type of system you are using, as far as I know these are 15.5 gallons

maybe when you cut the top off, you have the scrap used to weld a plug over the hole. otherwise I wouldn't buy it

it would make a great cask for a real ale!