Grates on the hull?

Discussion in 'Submariners' started by 306dturbo, Sep 10, 2016.

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  1. Probably going to get torn a new arse for asking this on here but I thought if you don't ask you don't find out lol

    On PRNC we had a tour of an A boat and I remember stood on the casing there were several grates on it leading inside to the second inner hull (is that right?)

    Just wondered why this area wouldn't fill with water through the grates when submerged and pull the boat further under or how they stop this happening?

  2. The area between the pressure hull and the casing (outer skin if you like) is free flood space. Gratings prevent air getting trapped between the two.

    The space is designed to fill with water, same as the fin.
    Last edited: Sep 10, 2016
  3. I'm feeling benevolent today - maybe it is the G&T.

    As long as the number of dives and the number of surfaces are more or less the same, then everything is just fine.

    If the linky doesn't work, just cut and paste it into Google.
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  4. Here's another grate in Hull, North Humberside.

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  5. This one in blocked.
    blkd drn.jpg
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  6. Could be useful if you wanted some anechoic tile shavings. grater.jpg
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  7. This one's full of cheese.

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  8. ...and this grate had a kangaroo stuck in it.

  9. [​IMG]
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  10. Be grateful that everyone iis in a caring mood?
  11. Its to stop the great unwashed falling out of their boats, the same as why ship's have Bilges, stops tiffs dropping their spanners into the sea.
  12. Ageing_Gracefully

    Ageing_Gracefully War Hero Moderator Book Reviewer

    More or less the same? So an extra dip would not be that much of a worry? ;)
  13. Prior to 1st August 1970 - Of a typical A boat's crew of 63 persons:

    15 were listed on the ship's books as being RA, 5 others were UA but only 2 were T.

    The other 41 were all grates.
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