<p>I’m no expert, but I doubt that simply slowing down a few knots would prevent a hit. Granted, IF the torpedo is nearing the limits of its range/turning ability, that would work. From what I’ve heard, a lot of it depends on whether or not the torpedo is being fed information from the launch source (submarine). Supposedly, the Russians are exporting a 200knot capable torpedo, which slows during the terminal phase to better track the target. Apparently, the export model does not have terminal guidance. So, changing speeds (if done VERY quickly) could defeat it.</p>