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Dean, I'm receiving your emails in 18-point Arial. I
just assumed you did that so you could type without putting on your
glasses, so I've always replied in 14-point.
Jim T.
In a message dated 1/16/2011 5:41:41 P.M. Central Standard Time,
cast55@telus.net writes:
Dean -
check your email settings. Your messages are showing up in a
huge
font on my system.
As for your comments - I'm sure every designer has
their reasons for
keeping their designs as light as possible, but it is an
interesting
thought exercise to consider the actual downsides to
incorporating
larger main buoyancy tank volumes, in conjunction with
additional lead
ballast, to increase the righting arm of any given boat
for the same
freeboard. Lead is relatively cheap, and exterior MBTs
would seem to be
one of the easiest structural / mechanical retrofits that
can be
effected. The obvious downside being the necessary power to
drive the
boat at the same speed, but for most PSub applications (Cliff
excepted),
we're not racing around down there. Perhaps designing for
sufficient
stability to support a load on the weather deck is worth the
additional
displacement? Even without changing displacement and
ballast, it might
be possible to lower the position of fixed ballast on a
given design in
order to increase stability? I am curious to know if
anyone on the list
has, after completing and testing a sub, opted to make
modifications in
order to change the stability.
Comments?
-Sean
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