If you like it, get a survey done, work out your budget and place a bid. You don't have to be there when the auction closes, just committed with a realistic offer.
Surveyor will be able to provide additional images if you want them.
Alternatively, engage a broker to act for you and do all the groundwork, and place a bid accordingly.
And always remember, boats are just like strippers, they only work while you're throwing $100 notes at them.
If you only use 1 piece of advice that's been offered up so far, listen to Aardvarkash10 & get it surveyed.
Good luck Pal, you're gonna need it.