Time and time again I keep seeing people being paranoid about flooding etc. There is a solution to this if you are willing to go the extra mile. Instead of leaving your systems full of air you can fill your containers up with a high dielectric oil. If you want to understand more of what I am talking about look up “Pressure Balanced Oil Filled”.
I have built cables with pretty much Tygon tubing and connectors filled and equalized … and vacuum degassed … with oil that have went to the bottom of the ocean and back. PBOF systems are used in a lot of your SONAR towed cables and other systems that have electronics and require acoustic transparency. It is nothing new but it is basically messy and you have to deal with a fill system etc.
Using the WTE sold on here, you can make a PBOF system so you don’t have to be worried about your little ROV going to a 1000 feet and dying.
Just wanted to toss out that suggestion in case anyone wanted to go a little deeper in protection schemes for their systems.