Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!mips!pacbell.com!ucsd!dog.ee.lbl.gov!nosc!cod!deichman
From: deichman@cod.NOSC.MIL (Shane D. Deichman)
Newsgroups: comp.sys.mac.games
Subject: Re: harpoon
Message-ID: <3024@cod.NOSC.MIL>
Date: 30 Apr 91 23:43:27 GMT
References: <1991Apr30.213107.29355@midway.uchicago.edu>
Organization: Naval Ocean Systems Center, San Diego
Lines: 15

In article <1991Apr30.213107.29355@midway.uchicago.edu> hui@control.uchicago.edu writes:
>
>When topedo follows your sub, is similer situation,
>one better turn his sonar off (as well as engin) and change depth, launch
>a noisy decoy will help a lot.

And then PRAY!  Torpedoes rely on active homers, so shutting everything 
down on your vessel will turn you into a 6,000 ton sitting duck.  The
noisemakers are only intended to confuse a torp (by saturating it's own
receptors) and are of somewhat dubious effectiveness.  The best approach
is to run away from a torp as fast as possible, since most torps are
pretty slow beasts (i.e., <40 knots!) and have pretty short lifetimes.
The Soviet Alfa-class boats have a top speed of over 42 knots submerged!

-shane