RC Submarine

this is a very simple RC submarine developed for use in ponds, it has motor covers so that fish or frogs cannot get caught in them. it has a water tight battery compartment which needs 4xm3 nuts. It will need weighting by you to get it right for what camera you might be using. it will want to be just slightly positively buoyant so it will not be lost if the battery runs out. it is a static sinker (does not need forward motion to sink) but as it uses a propeller to go down it will not require and