----- Original Message -----
From: SFreihof@aol.com
To: personal_submersibles@psubs.org
Sent: Thursday, February 19, 2004 4:47 PM
Subject: [PSUBS-MAILIST] Mercury ballast
Mercury was used by Cousteau for trimming his soucoup because of
the
liquid metal's high density. I would expect mercury to be very
expensive and hard to get now.
Likewise, the Bathyscaphe Trieste used gasoline in her float
because
it is a lighter--than-water liquid. It worked, but I don't think
you'd
get away with that technique now because of environmental hazards.
Given our current knowledge, why ignore the fact that there are
better
choices with fewer drawbacks than mercury for ballast and gasoline
for
flotation?
My 2 cents paid in full.
Stan
In a message dated 2/18/2004 12:46:47 PM Eastern Standard Time,
ojaibees@ojai.net writes:
I'm not designing my sub for a lawyer.
Brisn Cox
----- Original Message -----
From: NeophyteSG@aol.com
To: personal_submersibles@psubs.org
Sent: Wednesday, February 18, 2004 8:40 AM
Subject: Re: [PSUBS-MAILIST] battery acid? & battery issue
follow
up
In a message dated 2/17/04 11:46:38 PM Pacific Standard Time,
ojaibees@ojai.net writes:
I don't intended on drinking it, and it will be in a closed
loop
and sealed. The fact that it is liquid makes it ideal for pumping
from
point A to point B.
Brian
I'll suffice to say that, for me, it comes down to the
question of
whether the design advantage is worth it when balanced against the
potential and likely event that an environmental government agency
(DEQ,
Coast Guard) and/or activist group(s) finds out you're carrying even
trim-ballast-quantity of mercury in State or Federal waters or over
roads on a trailer (DOT governs transportation of toxic & hazardous
materials) ... shudder. Not only that but I'd feel like ... if I
actually spilled. Not for me.
Shawn