So what does that mean? How could there be liability for a product or something non-tangible like software?

When we say 'liability' that means that the company would be responsible for damages or 'harms' suffered as a result of negligence in the product creation, design or manufacturing. What kinds of things could go wrong in producing a mapping device (actual box like item with a screen), something you would attach on a boat navigation system? What kind of things could cause harm or invoke liability for a software product?