After about my 3rd test dive in very shallow water (not much deeper than 4 meters) I was tidying up some wiring inside the vehicle and putting a vac test on the main electronics pod, only to find it wasn’t holding a vacuum. It seems like the domed front has developed a small crack near the bolt holes. Is the test vacuum to high?
I use the ROV in colder water (north sea) so not sure if temperature makes the dome more brittle? Is it possible to get a replacement dome in case this one was defective? I’ve really not pushed the vehicle depth wise or really done any exploratory dives just showed it off in a harbour while configuring it.