NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Navigator's Vision,Day or Night.
From: Douglas Denny
Date: 2009 Oct 5, 15:27 -0700
From: Douglas Denny
Date: 2009 Oct 5, 15:27 -0700
I believe British Polaris subs used Barr and Stroud periscopes with built-in
sextants with pendulous reference and averaging device.
No point in going outside on the fin ('conning-tower')in the cold and wet and
exposing the submarine needlessly when a few inches of periscope is all that
is needed.
Underwater navigation since the 1960s has been SINS (ships inertial navigation
system), which allowed for the first time under the ice-cap navigation.
I guess now based on much more accurate ring-laser gyros and sensitive
accelerometers; no doubt position updated to check drift every now and then
by GPS from a floated antenna sent up on 'a bit of string'.
I'm not sure about modern arrangements though.
Douglas Denny.
Chichester. England.
============
Original Post:
Byron,
Can you describe what it was like making an observation from a Polaris
Sub? Was it done on the Conning tower or could it be done through the
periscope?
Greg
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