Here’s a project we had last year that was a little interesting. We received a call from a marina manager here who was concerned about a concrete piling that had developed a fair bit of list after being hit by a rather large yacht (see the above water photo). He called two divers to inspect the piling and report back.
The first diver reported that the piling had a big crack but was otherwise intact. The second told him the piling was completely broken and the top half was leaning at an angle. The marina manager asked us if we might be able to take a look to verify either of the other reports.
We reported on scene the very next morning and after about an hour of flying it was pretty obvious that the piling was intact but was leaning (here are just a few of the photos we took).
Apparently the pilings were set in very soft sand / earth and it didn’t take much impact to move them. According to the marina manager, because the piling was intact the repairs were much less expensive and our quick inspection saved the marina in the neighborhood of $150K. Not bad for a morning’s work!