A friend of mine has a climbing rope, a Petzl Nomad that has been for a swim in the Mediterranean. There has been concern raised about what the salt could have done to the core of the rope. I am not sure, as this is one of Petzl's ropes with the Duratec Dry system.
9.8 Nomad | Petzl
What say you guys? Safe to use as long as the rope passes visual inspection?