𝗧𝗵𝗲 𝘁𝗿𝘂𝘁𝗵 𝗮𝗻𝗱 𝘂𝗻𝘁𝗿𝘂𝘁𝗵 𝗮𝗯𝗼𝘂𝘁 𝘂𝗹𝘁𝗿𝗮𝘀𝗼𝗻𝗶𝗰 𝗮𝗻𝘁𝗶-𝗳𝗼𝘂𝗹𝗶𝗻𝗴 - 𝟳 - Fish cannot hear ultrasonic sound. They actually have hearing for lower frequencies than humans. Some sea mammals - dolphins, whales - do actually hear the high frequency sounds. Shipsonic is going to participate in a research to measure how much of its systems' sound travels - how far away from a vessel can how many decibels be registered? We should have answers in about a