Hello Douglas E Knapp,

As a retired submarine sailor and sonar technician we practiced in trainers that simulated the boat's maneuvers, sort of link a link trainer for pilots, in submarine versus submarine engagements. My best analogy is aerial combat with the twist that we were in an aircraft with the canopy painted so you couldn't see out and had to passively listen or use active sonar to track the target. In deep water the limit was crush depth and in shallow water the depth to the bottom limited the maneuvers. The movie "Hunt for Red October" scene of the two submarines in combat is what I imagined what was going on with the deck tilting in response to rudder, stern, and fairwater planes being moved. My apologies but this is the best I have to explain submarine combat.

Tom R

From: "Knapp" <xxxxxx@gmail.com>
To: "TML" <xxxxxx@simplelists.com>
Sent: Sunday, February 21, 2016 2:23:01 PM
Subject: Re: Off-topic - tracking enemy vessels, was Re: [TML] Instant city

On Sun, Feb 21, 2016 at 9:33 AM, Richard Aiken <xxxxxx@gmail.com> wrote:

On Sun, Feb 21, 2016 at 1:45 AM, Lymon Twist <xxxxxx@gmail.com> wrote:

The Alphas were titanium hulled, they could dive deeper.

Yep. And the latest American subs are INCREDIBLY expensive. Might some of that expense be due to titanium hull construction?

--

Richard Aiken

Design always has trade offs and I don't see how having a lot of extra crush depth increases your ability to fight well. My understanding of sub warfare is that it mostly happens at relatively shallow depths. I could of course not understand because I don't know much about it.

Douglas E Knapp

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