110 is transmitted in a similar fashion utilizing parallel line 140 multiplexer 142 line 144 acoustic transducer 146 water medium 122 for acoustic data 148 acoustic transducer 150 line 152 demultiplexer 154 parallel lines 156 and fire control system 110 the acoustic transducers 116 and 124 carrying acoustic data 120 should be separated an adequate distance from acoustic transducers 146 and 150 carrying acoustic data 148 so that interference from cross talk does not occur this distance can be easily determined by cut and try methods for each type facility for systems having a large amount of simultaneous data to be transmitted the arrangement shown in fig3 could be used the operation of each path is similar to that described for fig1 the fire control system 10a has three separate paths available for transmitting information to weapon electronics system 12a information can also be sent from weapon electronics system 12a to fire control system 10a the components used in fig3 are similar to those of fig1 and use the same numerical notation with a letter added for distinguishing them the launch tube wall 18a and weapon shell 26a would be modified for the additional transducers each transducer pair 16a and 24a 16b and 24b and 16c and 24c.