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An otherwise ordinary iceberg, weighted with sufficient tonnage of
sand/gravel/moraines so it attains neutral buoyancy. Then the addition or
removal
of air from chambers inside the iceberg could be used to manipulate its
submersion
depth.
As the ice melts it is a matter of also jettisoning
rock into the water, to maintain
buoyancy stasis.
"Ice" by James Follett
http://www.fantasti...mes-follett/ice.htm
Prior Art [8th of 7, Jun 01 2011]
Heavy water ice
http://scienceforum...t-in-regular-water/
Same sort of question [Ling, Jun 03 2011]
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Annotation:
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Was this really worth interrupting my attempts to
insert Schubert into a Scott Adams cartoon? |
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Actually, yes, it was. [+] |
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I couldn't possibly comment. |
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Oh go on, you know you want to. |
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I'll bun it if they're artificial pykrete-burgs instead. |
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You would have to know at what depth the 'enemy
submarine' was traveling (if anything fitting that
description can be found nowadays) in order to put your
modified iceberg into its path, which leads me to two
points: |
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A) almost every method of pinpointing the position of a
submarine will make the crew of that submarine aware
that you are trying to determine thier position, giving
them ample time to react to the iceberg as it heaves into
position. |
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B) since they already know you're looking for them, once
you've pinpointed the sub's location there's really no
further need for subtlety, so just fire a damn torpedo at
them and save the precious pykrete resources for orbital
breakfast-food delivery weapons. |
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"I bet no ship expects to be struck by an iceberg from below." |
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Nobody expects the Spanish Ice-quisition! |
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With some sculpting of the top of the iceberg, this scheme could be used to sneak up on a ship, then jettison ballast and rise beneath it, lifting it out of the water. The (seadragon-shaped) iceberg could then take the helpless ship and its contents home. The music would be from You Only Live Twice and the scene with the spaceship eating rocket. 19thly would be Blofeld (peering from the I of the seadragon Iceberg) but with two ferrets instead of the cat and very buff like the Beastmaster. Yes, yes, it's all coming together... |
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<Quietly removes paper bag containing [bungston]'s remaining supply of Funny Mushrooms> |
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Would heavy water ice be more dense than seawater? Just
a thought... |
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Heavy water ice would have a density close to 10/9 that of ordinary ice, or 1.018 g/ml. The density of seawater is about 1.025 g/ml. Very close. |
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It might not be me looking out from the I. |
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Wouldn't the amount of sand, gravel or whatever ballast necessary to submerge the iceberg make this idea a bit impractical? At least if the iceberg was to have a relevant size to be used as a weapon |
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Oh, sure, it's the sand/gravel/ballast issue that makes this
impractical... and here all this time I thought the
impracticality lay in the enourmous surplus of fully-baked
anti-submarine technology already sitting around unused
because of a noticable reduction in the number of hostile
submarines skulking about where they don't belong since
the end of the Cold War... |
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Sand has this habit of melting ice. |
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