zoidberg
Well-Known Member
Of course they do!
But what kind....?
But what kind....?
Submarines' anchors
- Thread starter zoidberg
- Start date
Orion Jim
Well-Known Member
They submerge to the bottom....they ARE the anchor.....
nortada
Well-Known Member
When a submarine settles on the bottom how does it ensure the ground is not foul or includes points rocks that could do a power of no good
Just asking.
Neeves
Well-Known Member
They used (and may still use) the same anchors and chain as you would see on any warship or large commercial vessel, though the anchors might have been slightly modified to allow them to fit in the anchor pocket. When we, anyone, see submarines they tend to be alongside a submarine depot ship, alongside a pier or attached to a fleet mooring buoy. If they are involved in any real conflict there might be no appropriate pier, mooring nor room alongside the depot ship - they then must have the ability to anchor.
Things may have changed and use may now be made, for sone vessels, of high tensile anchor chain (to allow a significant weight saving) and/or dyneema (to reduce noise) they, or some, may use aluminium anchors, think Fortress (don't bother asking why I make this comment - my source is impeccable and is not Fortress).
Jonathan
Things may have changed and use may now be made, for sone vessels, of high tensile anchor chain (to allow a significant weight saving) and/or dyneema (to reduce noise) they, or some, may use aluminium anchors, think Fortress (don't bother asking why I make this comment - my source is impeccable and is not Fortress).
Jonathan
Neeves
Well-Known Member
When a submarine settles on the bottom how does it ensure the ground is not foul or includes points rocks that could do a power of no good
Just asking.
Think of a better fishfinder, or better than the ones 'we' might have access to.
Jonathan
Poignard
Well-Known Member
When a submarine settles on the bottom how does it ensure the ground is not foul or includes points rocks that could do a power of no good
Just asking.
They are rather strongly made.
nortada
Well-Known Member
vyv_cox
Well-Known Member
capnsensible
Well-Known Member
But on the surface, they use an anchor. When stowed it forms part of the fairing of the hull profile. Rarely used but always available when entering and leaving harbour in the event of a propulsion or steering gear failure.Just like your yacht.....
capnsensible
Well-Known Member
So are rocks
Places of interest are mud, shale or sand. :encouragement:
dom
Well-Known Member
mjcoon
Well-Known Member
This first link of yours is excellent
I especially liked the punch-line!
Mike.
capnsensible
Well-Known Member
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.
zoidberg
Well-Known Member
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.
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.
NotBirdseye
Well-Known Member
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.PeterV
Well-Known Member
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.
Whilst conventional (diesel electric) submarines regularly sit on the seabed, nuclear submarines never do, because their sea water intakes could become blocked.
capnsensible
Well-Known Member
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?
Great zap on the uw telephone plug in though, who said Crabs got no sense of humour?
Biggles Wader
Well-Known Member
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.
lw395
Well-Known Member
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?
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?
capnsensible
Well-Known Member
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.
