8. Mega Electronics Array
The only electronics device you absolutely need is a VHF radio. If your radio is equipped with DSC (digital selective calling), you'll need a GPS, a good combination to have in an emergency. Most folks think that a GPS chart plotter is also a "must have." While handy as a second opinion to navigational input, never depend on it alone. Save money and buy up-to-date paper charts. A depth sounder, or a fish finder for anglers, is a worthwhile purchase, but few of us need to spend $3,500 minimum for radar. If you're sticking to one brand, save money with a multifunction unit.