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Originally Posted by FutureTank
Actually the science of builogy says that they, the amphibians, MUST be completely submerged to enable them to subsist. Almost invariably the amphibians feed from the water, and the tactic used by the crocodile species is to attack from a submerged position.
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Not being such a smart guy, you will have to define builogy for me. A quick google search turns up the term, but no definitions.
Google did find several definitions for amphibious:
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am·phib·i·ous (m-fb-s) KEY
ADJECTIVE:
1. Biology Living or able to live both on land and in water.
2. Able to operate both on land and in water: amphibious tanks.
3. Relating to or organized for a military landing by means of combined naval and land forces.
4. Of a mixed or twofold nature.
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Others:
Amphibious - definition from Biology-Online.org
Amphibious Vehicle definition - Army Technology
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Who is talking about the surf? The so transported infantry have to get to the surf FIRST! The EFV is advertized as being able to deliver infantry in an assault so delivered from "beyond horizon". This is not some abstract distance, bit varies from 21 to as far as 70 nautical miles. What this means is that the EFV with a speed of 15knots would be very observable on the survace (by virtue of the wake it generates) for over an hour at least.
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Initial posts to this thread lacked any reference to crossing the surf, IMHO a key component for naval infantry, however it may be accomplished.
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On the other hand the fully amphibious vehicle would also have problems witht he surf on some beaches, but far less so since it can ground itself and use tracks to make it's way up the beach.
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Sounds like a neat capability, but driving the development,cost, and weight of the vehicle through the roof. Not a necessary characteristic in my mind.
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I'm not sure how this is relevant to the question.
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Once again, earlier posts discussed breaching buildings, I was providing information on organic USMC rifle company capabilities.