Anyone know if these little shortwaves are any good?

I've had one for years....its very good for a small portable, which
can also recieve ssb (single side band).....but, they eat batteries.
Best bet on a boat is to power it with a cheap (Radio shack) 12v
battery adapter and save the (6) internal AA batteries for portable
use. Also, you need the external wire antenna for good short wave
reception....it comes with the radio.