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  1. #1
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    Boxes of 20mm rounds washed ashore in Cornwall.

    A BBC news article from a couple of days ago.

    http://www.bbc.co.uk/news/uk-england-cornwall-43799188

    One of the photos shows the box markings as Mk 244. More information on that round here: Are these used by the Royal Navy?

    https://www.gd-ots.com/munitions/med...on/20mm_mk244/

    Would a sealed box of these rounds contain enough air to allow it to float?

  2. #2
    MODERATOR/ORDNANCE APPROVED
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    They have a rubber seal in the lid, I'm not sure if they are airtight though.
    "Any live or recovered ordnance in my posts has been dealt with by trained EOD personnel"

    I've seen things you people wouldn't believe.
    Barbeques on fire by the chalets past the castle headland
    I watched the gift shops glitter in the darkness off the Newborough gate
    All these moments will be lost in time, like icecream on the beach
    Time for tea.

  3. #3
    MODERATOR/ORDNANCE APPROVED
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    It should be fairly easy to track where they came from. The BKI on the box and the white lable should provide clues

    r.jpg
    "Any live or recovered ordnance in my posts has been dealt with by trained EOD personnel"

    I've seen things you people wouldn't believe.
    Barbeques on fire by the chalets past the castle headland
    I watched the gift shops glitter in the darkness off the Newborough gate
    All these moments will be lost in time, like icecream on the beach
    Time for tea.

  4. #4
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    The lid is airtight.
    In the old pre Montreal International Law of the Sea Conference 1974 days which put a phased in ban on sea dumping of munitions at sea, even though packages did not have any kind of lid sealing, the munitions were removed and holes to a prescription, were made in the packages.
    One good reason for the additional holes is that those dropping them over the side feel happier about the screws driving the ship beginning to turn, if they have seen them moving rapidly towards Davy Jones.
    Davy Jones's Locker was the destination marked on all sea dumping issuing paperwork.
    Last edited by AE501; 20th April 2018 at 12:12 AM.

  5. #5
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    Back in my Navy days, in a weapons division, I can assure you nothing like that would/could accidentally fall over the side. Those were chunked. Traceable back to the ship and whoever last signed for them. Lucy's got some 'splainin' to do. Somebody's gonna get an a$$chewin', at the least. We never threw expired ord/ammo over the side. It always got shot up.
    Last edited by Slick; 20th April 2018 at 12:16 AM.
    Better to remain silent and be thought a fool than to speak out and remove all doubt.

  6. #6
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    The type of round used in the CIWS anti missle Vulcan miniguns, don't know if UK has them,looks to be US ammo.

  7. #7
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    To be precise, the MK244 is the latest ammo for use in the Phalanx 1B CIWS which among other things has longer and heavier barrels than previous versions. The MK244 fires tungsten-cored APDS projectiles which are larger and heavier than the previous MK149 family, and the propellant load is tuned for the longer barrels. It has a red plastic sabot as opposed to the last iteration of the MK149, which were white (and before that, orange, and before that, black - both with DU core).

    The RN does use the Phalanx and although I am not 100% certain, I think that they have all been upgraded to the 1B version, so it could have come from an RN ship. The ammo is not made in the UK however, it is bought from the USA.

  8. #8
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    Just to show the different MOD types ... Yellow and Green are (as far as i know) experimental/testing specimens
    Attached Images Attached Images
    IAA and ECRA/NVBMB member
    My collection : http://www.20mmcollector.net/20mm.htm

 

 

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