Superb!!! It looks very much like what Nefelodamon does in his hydrophone tutorial (video) that he posted in the Sh3 section.
http://www.subsim.com/radioroom/showthread.php?t=154461
http://www.filefront.com/14186971/Hy...on.part01.rar/
Jerm138: Excellently clear and step-by-step tutorial. Just like I would use the drawing tools. Well done!