Thanks Oz Brett if the Lowrance does that it sounds sensible to try and connect them. All the gear is good but it certainly takes some sorting.
If that's the case I need to try and find the right cable ( $60 sounds rediculous but I guess there isn't much I can do about it). A boat name, register for MMSI number, update the EPIRB details to include MMSI. And join the coast patrol.