Page 2 of 5 FirstFirst 12345 LastLast
Results 11 to 20 of 41
  1. #11
    Join Date
    Dec 2003
    Posts
    5,492

    Default Re: Submarines' anchors

    This first link of yours is excellent

  2. #12
    Join Date
    Jun 2011
    Location
    Berkshire, UK
    Posts
    2,707

    Default Re: Submarines' anchors

    Quote Originally Posted by dom View Post
    This first link of yours is excellent
    I especially liked the punch-line!

    Mike.

  3. #13
    Join Date
    Mar 2007
    Location
    Atlantic
    Posts
    20,854

    Default Re: Submarines' anchors

    Quote Originally Posted by mjcoon View Post
    I especially liked the punch-line!

    Mike.
    Yeah, classic way of winding up your ships divers! No idea why those blokes used to volunteer for that training. The extra money was not a big incentive.

  4. #14
    Join Date
    Nov 2016
    Posts
    2,538

    Default Re: Submarines' anchors

    As a modest 'aside', one of the Hydrographic Office charts of the eastern Bay of Biscay showed the dip-slope 'drop off' into the 3000 metre+ abyss. A point on that slope, well off France, had a symbol depicted. This translated, on investigation, into an underwater telephone point....

    While it was never fully explained, my understanding from a lady at Taunton was that it was indeed a 'phone plug-in point for submarine(s) and that it had been included in the print-plate by error..... or 'finger-trubl'. It hadn't been deleted from the French military 'SHOM' charts, as perhaps it should have been.

  5. #15
    Join Date
    Apr 2019
    Location
    Wales
    Posts
    694

    Default Re: Submarines' anchors

    Quote Originally Posted by zoidberg View Post
    As a modest 'aside', one of the Hydrographic Office charts of the eastern Bay of Biscay showed the dip-slope 'drop off' into the 3000 metre+ abyss. A point on that slope, well off France, had a symbol depicted. This translated, on investigation, into an underwater telephone point....

    While it was never fully explained, my understanding from a lady at Taunton was that it was indeed a 'phone plug-in point for submarine(s) and that it had been included in the print-plate by error..... or 'finger-trubl'. It hadn't been deleted from the French military 'SHOM' charts, as perhaps it should have been.
    Sounds like a full explanation to me? Though just in case someone else wonders "why do Submarines need underwater telephones?". That's an easy one. Radio (nor sat) does not propagate that far through seawater, I believe the maximum depths to receive radio is about 30 meters or so, though a bit deeper if they can reel out a floating antenna most subs operate at -200m. There has been some success with Extremely Low Frequency (ELF) but this is generally used for emergencies and such due to the power demand and possible other side effects. To avoid re-surfacing and possibly revealing their position they can instead connect to an underwater network that provides faster comms at various points.

  6. #16
    Join Date
    Aug 2006
    Posts
    96

    Default Re: Submarines' anchors

    The first reference was written for a US submarine. RN submarine anchors are similar but use a more conventional ships anchor with an attached fairing plate. Anchoring is only ever done as part of trials, after that the anchor is available but not used, and I always doubted its effectiveness since the fairing plate is well and truly faired in with compound to stop it making any noise, so I wondered if it would release when wanted.
    Whilst conventional (diesel electric) submarines regularly sit on the seabed, nuclear submarines never do, because their sea water intakes could become blocked.

  7. #17
    Join Date
    Mar 2007
    Location
    Atlantic
    Posts
    20,854

    Default Re: Submarines' anchors

    I operated the anchor windlass control panel on an SSN several times. Once to anchor, several times to veer and haul for maintenance in dry dock maintenance periods. They work quite well.

    Great zap on the uw telephone plug in though, who said Crabs got no sense of humour?

  8. #18
    Join Date
    Mar 2013
    Location
    London
    Posts
    6,373

    Default Re: Submarines' anchors

    Quote Originally Posted by zoidberg View Post
    As a modest 'aside', one of the Hydrographic Office charts of the eastern Bay of Biscay showed the dip-slope 'drop off' into the 3000 metre+ abyss. A point on that slope, well off France, had a symbol depicted. This translated, on investigation, into an underwater telephone point....

    While it was never fully explained, my understanding from a lady at Taunton was that it was indeed a 'phone plug-in point for submarine(s) and that it had been included in the print-plate by error..... or 'finger-trubl'. It hadn't been deleted from the French military 'SHOM' charts, as perhaps it should have been.
    Must have been an old chart. That terminal is a proper internet access point now and there is also a phone mast there so the crew can fire up their smartphones and "like" their mates on facebook. Gotta keep up with the times.

  9. #19
    Join Date
    May 2007
    Posts
    37,703

    Default Re: Submarines' anchors

    A mate of mine worked for STC, submarine cables, i.e. fibre optic cables to America etc.
    After explaining lots of stuff about the system to some new recruits, one asked 'and where do the submarines come into it?'.

    The 'submarine connection point' is probably a junction box for the internet?

  10. #20
    Join Date
    Mar 2007
    Location
    Atlantic
    Posts
    20,854

    Default Re: Submarines' anchors

    During practical sailing courses Ive been asked dozens of times how submarines pick up the cables indicated on charts. I always refrain from taking the P.

Page 2 of 5 FirstFirst 12345 LastLast

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Latest YBW News

Find Boats For Sale

to
to