Comments on: Can a modern submarine detect a sailing yacht through sonar or any means other than periscope? http://boatssailing.com/can-a-modern-submarine-detect-a-sailing-yacht-through-sonar-or-any-means-other-than-periscope All about boats, yachts and sailing Fri, 18 May 2012 01:48:12 +0000 http://wordpress.org/?v=2.7 hourly 1 By: Wayne C http://boatssailing.com/can-a-modern-submarine-detect-a-sailing-yacht-through-sonar-or-any-means-other-than-periscope/comment-page-1#comment-431 Wayne C Sun, 06 Sep 2009 16:07:25 +0000 http://boatssailing.com/can-a-modern-submarine-detect-a-sailing-yacht-through-sonar-or-any-means-other-than-periscope#comment-431 Sonar requires the return echo of sound. Whales and schools of fish can be picked up. Those are both submerged so the entire object is available for echo return. In the case of a surface vessel only the submerge portion of the hull is available. Plastic and fiberglass both are pretty good sound insulators. Anything is possible. I seem to recall that subs are required to check the surface, at least in some specific locations close to land, seems that was mentioned when the Japanese ship was hit around HI a few years ago. Check out the link. Electronic devices can be very complex in theory, operation and repair. The ATM you take cash out of has 2 -3 manuals each about 8 inches thick. There are no more than 5 devices inside it to complete the operation, in the case of sonar/radar/data comm/CCTV/Access Control (card key) and many other systems the operations are both complex and not always easy to predict. Sonar is the one with the most variables to drive operators and repairmen crazy. It is subject to depth/temperature/salinity of the water the math is very complicated and not always accurate. Edit: Active sonar would likely have trouble. The sound emitted by a small engine could be picked up, not sure at what distance though. A yacht under sail is going to be very very very silent....let me add one more very! Sonar requires the return echo of sound. Whales and schools of fish can be picked up. Those are both submerged so the entire object is available for echo return.

In the case of a surface vessel only the submerge portion of the hull is available. Plastic and fiberglass both are pretty good sound insulators. Anything is possible. I seem to recall that subs are required to check the surface, at least in some specific locations close to land, seems that was mentioned when the Japanese ship was hit around HI a few years ago.

Check out the link. Electronic devices can be very complex in theory, operation and repair. The ATM you take cash out of has 2 -3 manuals each about 8 inches thick. There are no more than 5 devices inside it to complete the operation, in the case of sonar/radar/data comm/CCTV/Access Control (card key) and many other systems the operations are both complex and not always easy to predict. Sonar is the one with the most variables to drive operators and repairmen crazy. It is subject to depth/temperature/salinity of the water the math is very complicated and not always accurate.

Edit: Active sonar would likely have trouble. The sound emitted by a small engine could be picked up, not sure at what distance though. A yacht under sail is going to be very very very silent….let me add one more very!

]]> By: Mike W http://boatssailing.com/can-a-modern-submarine-detect-a-sailing-yacht-through-sonar-or-any-means-other-than-periscope/comment-page-1#comment-430 Mike W Sun, 06 Sep 2009 13:49:43 +0000 http://boatssailing.com/can-a-modern-submarine-detect-a-sailing-yacht-through-sonar-or-any-means-other-than-periscope#comment-430 For the boat would have noise though sonar techs are mainly trying to find machinery noises and screw cavitation when searching for. For the boat would have noise though sonar techs are mainly trying to find machinery noises and screw cavitation when searching for.

]]> By: spkultr http://boatssailing.com/can-a-modern-submarine-detect-a-sailing-yacht-through-sonar-or-any-means-other-than-periscope/comment-page-1#comment-429 spkultr Fri, 04 Sep 2009 00:57:42 +0000 http://boatssailing.com/can-a-modern-submarine-detect-a-sailing-yacht-through-sonar-or-any-means-other-than-periscope#comment-429 The first torpedo to reach you. The first torpedo to reach you.

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