[j_tull]

If the "acoustic tiles" were really hull array hydrophones, that would account for the large price tag.

[OldCorps]

guess the skipper can kiss his career goodbye.

[Pan_Yan]

The accoustic tiles are the rubber coatings that cover the whole hull. They are a pain in the a## to attach and come off all the time. You can go out to sea for five minutes and lose twenty tiles. I'm sure they lost some hull hydrophones as well. If they banged up the rudder, they probably dinged the prop as well (not cheap). The 'outboard motor' drops out of the hull right before the rudder and it might have needed some realignment as well.