How Do Real Subs Keep Out Water?

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  • Das Boot
    Rear Admiral
    • Dec 2019
    • 1149

    How Do Real Subs Keep Out Water?

    I’ve never seen this addressed. Are they o rings? How do they keep water from coming into the sub via the prop shaft and rudder/dive plane couplings?
    Of the 40,000 men who served on German submarines, 30,000 never returned.”
  • He Who Shall Not Be Named
    Moderator
    • Aug 2008
    • 12253

    #2
    Originally posted by Das Boot
    I’ve never seen this addressed. Are they o rings? How do they keep water from coming into the sub via the prop shaft and rudder/dive plane couplings?
    Most of the time chevron type packing.
    Who is John Galt?

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    • redboat219
      Admiral
      • Dec 2008
      • 2735

      #3


      ĺThe stern gland assembly consists of a gunmetal bulkhead casting to which is secured a gland stuffing box containing seven turns bf Sterntite square section packing. A gunmetal lantern ring is inserted between the third and fourth turns of gland packing.

      The glands are lubricated with grease supplied from Tecalemit spring feed reservoir lubricators one mounted as near as possible to each stern gland. The lantern ring is located by a locking plug, the bottom half of the ring being drilled to register with a test plug screwed into the bottom of the stuffing box.

      The gland packing is compressed by a flanged gland ring tightened by four hexagon headed pinion nuts screwed
      Make it simple, make strong, make it work!

      Comment

      • DrSchmidt
        Captain
        • Apr 2014
        • 919

        #4
        Drwaing of a Type XXIII stuffing box

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