I used to have one in a boat I had about 40 years ago. I think at the time it was a case of 'anything'll do' but now I'm a bit more worldly wise
I'm curious about them, hence a couple of questions.
The boat I'm currently building is approx 800mm long and will probably weigh in at around 7kg when fully kitted out (incl battery). It runs 3x 12v 385 motors with 25mm props so my first question is this:
Would something like this
be suitable? I'm not interested in light speed capabilities, it will be a plodder and this size of battery will fit nicely inside.
Hence secondly, does it have to be kept upright as in the picture?