To download animation of double-auger - each 5.5ft diameter x 50ft long, separated by 2” - CLICK HERE

Here is an animation at 30”/sec revolving speed, which is probably close to what it would look like.  Watch it in Quicktime player with loop turned on ~ Windows media player is jerky.

Here is animation of shrouded boat ~ can’t get the hull to be smooth, nor animation ...........aarrrgggghhhhhh!!!