It is not uncommon for boater's who venture offshore to discuss the merits of redundancy. Twin engines, two VHF's, two chartplotter/MFD's, etc., can add up in costs, but two is always better than one. If not already equipped, one of the cheapest options to add redundancy is the addition of a second bilge pump. There are two main considerations that drive the decision to add a second pump. The most obvious driver is to provide a backup should the primary pump or any pump s