Be very careful launching your straight bottom boat...
 

...by crane:

http://www.break.com/index/failed-la...zes-yacht.html

Once again, someone did not know the center of gravity and proper way to turn the boat!

Oh thats gotta hurt : (

It would seem to me that these crane operators or who ever would secure the straps in manner that they wouldn't slip. There has to be a way. That way the boat would not have to be so perfectly balanced. That slip started so slow I bet a few bungie cords could have prevented it! :D

Same video.... Nice Job!!!

http://www.clipjunkie.com/Yacht-Laun...l-vid5425.html

I've never rigged a boat but I've rigged a lot of other things. They have spreader bars side to side on that boat but no spreader bars fore and aft. the two cable attachment points above look very close together. Without fore and aft spreaders the straps ate trying to pull towards each other. I think with another simple set of spreaders that would not have happened.

The boat manufacturer supplies the CG, usually an adhesive CG sticker is placed on either side of the hull. The slings of course have to be spaced equally on either side of the CG. Tag lines should be used to control the load. No CAPTAIN MORGAN SPICED RUM is allowed during this procedure!

Wow. That's some really nice bottom paint!

Ouch.. Wonder who's insurance took the hit for that one.

Had it not been for the props getting hung up, it may have not barrel rolled on the way down, and might could have survived with a nose dive. It did hit the big ship on the way down, but only after it was rolling.

There is a reason that they put the "STRAP LOCATION" stickers on boats now days!!!