<sod >âWhat they're going to have to be looking for is contrast between hard objects, like bits of a fuselage, and that silty bottom,â Williams added.< eod>< sod > "What they're going to have to be looking for is contrast between hard objects, like bits of a fuselage, and that silty bottom," Williams added. "With the types of sonars they are using, if stuff is sitting up on top of the silt, say a wing was there, you could likely see that .< eod>