When I think about when people are believed to be lost through the ice I think that what we might need is a hovercraft that has a constant sonar that see through the ice and displays an image. It could help eliminate drowning as a cause of a missing person.
The sonar could be made by a roller type connection that is pressed to the ice. Or a heating element that clears snow in front of the sonar element. There ought to be a way to do it. And the modern sonar has the capability to cast a very detailed underwater image. More than one tranducer could be used in an array pattern to minimize the number of passes that are needed to cover an area.
Such a system would not catch everything, like close to shore where there many obstructions, by it might help. It should have recording to digital media capability to.
If the Clean Water act is indeed successful more people will be swimming in rivers and lakes and something like this would be helpful.
That or a mini submarine! But a mini submarine would be very very expensive. I would think a hovercraft and this type of sonar could be or should be able to be procured for less then $20,000 dollars. And the hovercraft could direct the power such that the operator does not get wind chill. For example snow mobile type drive system located under hull that retracts upward over open water and a different propulsion engages.
Copyright 2013 Thomas Paul Murphy
Originally published at: www.themilwaukeeandwisconsinnews.blogspot.com