I thought those grabbers looked familiar
I have one disassembled on my desk... at SeaBotix.
Then seeing the SeaBotix LBV decal and at least 3 (I'm assuming there's actually 4 or 5 since you have them in a vector alignment) of our thrusters confirmed my suspicion.
It's nice to see some of the things I've worked with and have had a hand in improving being used in this competition.
Not to take anything away from FIRST, but if any of think designing these ROVs is easy think again. There's another dimension you must take into account designing things for an underwater application. It's not like you can just snap something together and see how it runs. You've got to make sure things are sealed properly, that electrical connections are isolated from the water (you can't use regular old quick connects, hence the existence of companies like SubConn and Odu), you've also got to worry about how the weight of an accessory will effect the buoyancy of your device, plus you've got to take into account how some materials will react and corrode underwater and what treatments/surface finishes can help prevent that from happening. It can be quiet the challenge...