The spec seems high,but does state 18 turns or more motors.Which rules out most boat motors except high speed ones .Im also not impressed by the start up procedure.John.
Wrong way round. It
includes all but a very few motors, the high speed, low turn types being the excluded ones. For a given size of motor, and the buggy types always assumed a 540 size can, fewer turns means more amps, because there is a shorter length of thicker wire in the space available. The low turn motors will always draw more current, even when unloaded, but in a boat its the propellor fitted that ultimately determines the current drawn. Size, shape of blade, pitch, skew, blade section and number of blades all contribute to or detract from performance, and do so differently at different speeds, so there will probably never be a "this is best" chart that will sort out the best combination. If there was, everybody would be using it and there would probably only be one style of prop available.
The "safety" start-up, to me, indicates sloppy programming, and could lead to some tricky moments out on the water. With a buggy, if it stops unexpectedly,you can walk over to it and manually wake it up. This is difficult on water, and a safety feature like that could become a dangerous liability.
The relatively short duty cycles anticipated for racing might help to account for the high current ratings claimed by many oriental manufacturers, and it may well be that for the length of time it took to drain a "normal" battery, (under 5 minutes) it was adequate to be considered, in those terms, "continuous". Planning to pull that kind of current in a boat for, say, 20 minutes would be overly optimistic.