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Old 21-01-2015, 16:42
DogFather DogFather is offline
Ordinary Seaman
Join Date: Jul 2011
Posts: 9
Default D-Day & DD tank (Duplex Drive amphibious tank)

My understanding is that the beaches where the DD tanks made it to land,
they were very effective. Could not have some type of Landing Ship Tank, of smaller size and less draft, been developed. Then sent on a one way trip to
the beaches at Normandy.

The DD tank was never tested in rough water. Despite knowledge they would
need to operate in that situation. This is the reason many sank, killing some
of their crews. Then the troops at Omaha had no tank support. Omaha was
only completely secured after the enemy began to run out of ammo. You certainly see ships unloading heavy vehicles right on the beach, in some situations, during the Normandy Operations. In various D-Day documentaries.
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Old 09-11-2016, 17:42
sigurd83 sigurd83 is offline
Chief Petty Officer
Join Date: Oct 2016
Posts: 74
Default Re: D-Day & DD tank (Duplex Drive amphibious tank)

Omaha Beach
DD Tanks were designed to operate in waves up to 1 foot (0.3 m) high; however, on D-Day the waves were up to 6 ft (1.8 m) high. These were much worse conditions than the tanks had been tested in and hence they were swamped.

Also, the tanks of 741st Tank Battalion were launched too far out, about 3 mi (4.8 km) offshore. Considering the inherent difficulty in steering a 35 ton modified tank, it is a tribute to the crews that they got as far as they did.

The DDtank was later modified by fitting undersealing,an inflatable skirt and a propeller,

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