Here's my argument for why 6V is easier for a NEW CAPTAIN. I consider the average reliability of most new captain ships to be way too low, typically I see that driven by suggestions online. Those suggestions make for good camera men, but poor new member retention This is my proposed new captain ship control system: BC integrated gun/pump board Hobbywing 60A ESC, waterproof receiver johnson 600 motors (same motors for pump and drive) LiFe bricks or cylindrical cells solenoids waterproof rudder servo Steps for assembly: 1) Pot BC board in epoxy, coat receiver in E6000 2) Add connectors to battery, motors, solenoids 3) plug stuff in 4) bind receiver (can be tricky) You now have a pretty waterproof, operational ship control system. I would go as far as saying that it would be difficult to make that system not work. I put this in my Fiji a few months ago and was shocked at how simple it was. Can also be done at 12V if you can pick the right motors, but ship geometry makes battery selection trickier, not impossible, but why add a point of incompatibility for a new guy whose stuff is going to break and might not grasp spare parts needs. I haven't seen the >15V gun board solution, but it could exist. And Carlo, I'd say stay under 100V, 30V if possible. Life doesn't last long at 440V across the chest, I'm more comfortable plugging in the wet boat at <30V. One thing I have been planning to write up a 'new ship guide,' since I find that those with experience (and those without, haha) end up answering the same questions over and over again on this site. The plan would be to get input from others, so we don't end up with the 'voltage measuring contests' that spring up on every thread (I blame Steve). In regards to power consumption data, since we are measuring up here, I will say that my data is from about 14 events over the past two years, with two nationals. It is true that charger data introduces the error of residual discharge in the 12 hours between charge and battle, as well as countless other data inaccuracies, but those that believe in significant figures would say that those differences probably don't matter. I used to log the mAh for every charge, but those that believe in statistics will understand that I stopped logging the data once all of the numbers started falling into the same band. I've yet to establish my 95% confidence interval, so in that respect my data is deficient. Overall you could probably just say that I'm jealous of Chris' EE skills Me personally, I typically run at least two different circuits in my boats, usually 4S drive and 2S pump, I couldn't find the right brushed 12V pump motor that lasted more than a few battles and got tired of burning through motors. When I go brushless pump I'll go up to 4S across the board, because I too believe in physics. If we can get more experienced captains figuring out simple, reliable solutions at 24V I think that would be great, but lets not direct the new guys to serve as a test platform.