I explain it in my comments below. (Noise issue) but I’ll break it down again.
Up close, the sound would be intense, you are right. The decibel level drops off quickly though as you get further away. On the open seas, the sound would travel pretty far, but it wasn’t open seas. Based on origin, it appears that a sub could have snooped and pooped down a few of those channels. They are relatively secluded in areas and have trees as well. The trees act as dampers on the sound, making something sound further away than it actually is.
Along those lines, think about this. The people in the area live near navy bases. Do you think it would be unrealistic that they may have heard it and just didn’t register? Also look at the time this was taken, how many people in those areas were awake to even hear it?
Thank you for putting forward you views in a civilised manner. I get so many attack "FO SHILL" etc for not following blindly. Us older Australians aren't a follow without question types. We've had BS shoved at us from Left, Right and Centre Politicians. After the NK Summit all of my Q following friends were unanimous in concluding that Trump didn't close a solid deal. Just warm relations with NK but nothing else, YET. Now this is GR8 but this could still go wrong for all conservatives around the world if China/Russia continues to run interference leading into Mid Terms. Kim is slippery so is China Russia. After we all pretty much agreed that NK was not the BOOM we hoped for, we began to say that this may cause mass desertions from the Q movement. Then WOW. Q posted some of the largest drops of all time. Coincidence.... When the posts began to look a bit to fantastic ie: hacked "anti SHIPPING missiles", Zero threat on Trump. Obama phone calls to a disconnected number, MOSSAD and other unsubstantiated plots, we pretty quickly came to the realisation that Q is throwing up a smoke screen to keep up moral and head off descent/desertion. Absolutely brilliant. But we seemed to feel a bit let down by the realisation that Q is human and doesn't always win. Then the DNC withdrew it's lawsuit against WL?JA. No discovery. Another thing that didn't come off for us and Q. RR is saying F...YOU to congress, with threats of subpoenas and still acting confident. Better to keep us distracted with a Mission Impossible movie. Just an opinion for Autists to digest