There were several marine radios that were programable to ham radio freqs. The first I remember were a couple of ITT Makay radios. Some of the Harris radios were easily programmed but only for USB with the ones we were issued. The SEA 330s were very good. Keyboard entry, USB, LSB and digital modes. 300 watts above 4 MHz and 150 watts below 4 mhz. The Furuno 1502 was easily opened up with a digital code sequence for direct freq input and USB, LSB and digital modes.