214B? = T55?
Same/similar engine used in Unlimited Hydro boats. Enough saltwater in one of those and the PT eventually locks up as it builds up on the PT wheel rim and blades causing surge and stall as well - not pretty!
I think a surge or stall in a 214B would be a pretty expensive exercise and trash a lot of the drive train.
San Diego is the only place they run in saltwater. Big teams just change engines between races. Small teams clean the PT wheel between races - interesting to watch as the parts are still pretty hot!!
They run extended inlets to try and mitigate it but it is still a big issue.