MARINE ELECTRONIC SONAR FOR DETECTING THE DEPTH OF WATER AND/OR THE DEPTH OR LOCATION OF FISH OR OTHER OBJECTS IN THE WATER; ELECTRONIC NAVIGATIONAL DISPLAY RADIOS, NAMELY, GLOBAL POSITIONING AND MAPPING SYSTEMS (GPS) THAT OPERATE UPON INFORMATION RECEIVED FROM SATELLITES IN ORBIT AROUND THE EARTH OR LAND-BASED TRANSMITTERS OR DATABASES; AND RELATED ACCESSORIES, NAMELY, ELECTRONIC TRANSDUCERS FOR USE WITH MARINE ELECTRONIC SONAR; MARINE TEMPERATURE SENSORS, MARINE SPEED SENSORS, ELECTRIC POWE...