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Subject: "RE: Titanic 3D model project" Previous topic | Next topic
Scott AndrewsWed May-24-17 02:55 PM
Member since Sep 18th 2004
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#55171, "RE: Titanic 3D model project"
In response to In response to 110


  

          

Steve,

Is there any particular reason you chose to model two telegraphs per engine? The Olympic-class liners were essentially handled during maneuvering as conventional twin-screw ships. While the order telegraphs on the bridge were twin double units, meaning that orders could be rung down for both engines by a single operator from either side of the bridge shelter, the receiving/reply telegraphs in the engine room were generally arrange with one unit per engine -- in other words one instrument per engine receiving orders and sending back acknowledgements for that engine only.

Also, in the original engine telegraph arrangement aboard both Olympic and Titanic, there was no telegraph at all for the center shaft. Operation of the turbine was left entirely to the discretion of the engineer standing watch, in accordance with certain priorities regarding both operational requirements of the machinery and the number of revolutions and, therefore, speed requested by those on the bridge. The turbine was cut out during maneuvering and/or at speeds below half ahead, and there appears to be an interlock on the reversing levers of the reciprocating engines which prevented reversing of the reciprocating engines without also redirecting exhaust steam from the turbine and re-routing it to the main condensers via the change-over valves.

Later in her career, possibly during the 1912-1913 refit, and electric telegraph and bridge tell-tale were fitted for the turbine, and I assume that the same arrangement was fitted aboard Britannic from the beginning. At who's request this extra telegraph was fitted is unknown to me, and other than allowing the bridge to observe that the center screw was running, or to order the center screw stopped without telephoning the starting platform, this telegraph seems to fall into the category of an extra novelty, since its presence didn't, and couldn't, change the manner in which turbine had to operated in conjunction with the two reciprocating engines.


Regards,
Scott Andrews
TRMA Trustee

  

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Titanic 3D model project [View all] , SteveFury, Mon Feb-20-17 08:27 PM
  RE: Titanic 3D model project, Bill West, Feb 21st 2017, #1
RE: Titanic 3D model project, SteveFury, Feb 21st 2017, #2
RE: Titanic 3D model project, Bill West, Feb 22nd 2017, #3
RE: Titanic 3D model project, SteveFury, May 31st 2017, #119
RE: Titanic 3D model project, SteveFury, Feb 25th 2017, #4
RE: Titanic 3D model project, Bill West, Feb 25th 2017, #5
RE: Titanic 3D model project, J. Kent Layton, Feb 27th 2017, #6
RE: Titanic 3D model project, SteveFury, Mar 01st 2017, #7
RE: Titanic 3D model project, Bill West, Mar 01st 2017, #8
RE: Titanic 3D model project, SteveFury, Mar 03rd 2017, #9
RE: Titanic 3D model project, Bill West, Mar 03rd 2017, #10
RE: Titanic 3D model project, SteveFury, Mar 09th 2017, #11
RE: Titanic 3D model project, Bill West, Mar 11th 2017, #12
RE: Titanic 3D model project, SteveFury, Mar 12th 2017, #13
RE: Titanic 3D model project, Bill West, Mar 13th 2017, #14
RE: Titanic 3D model project, SteveFury, Mar 16th 2017, #15
RE: Titanic 3D model project, Bill West, Mar 17th 2017, #16
RE: Titanic 3D model project, SteveFury, Mar 19th 2017, #17
RE: Titanic 3D model project, Bill West, Mar 19th 2017, #18
      RE: Titanic 3D model project, Ralph Currell, Mar 23rd 2017, #19
           RE: Titanic 3D model project, Bill West, Mar 24th 2017, #20
                RE: Titanic 3D model project, Ralph Currell, Mar 24th 2017, #21
                     RE: Titanic 3D model project, Bill West, Mar 24th 2017, #22
                          RE: Titanic 3D model project, Ralph Currell, Mar 24th 2017, #23
RE: Titanic 3D model project, SteveFury, Mar 25th 2017, #24
RE: Titanic 3D model project, Karol_W, Mar 25th 2017, #25
RE: Titanic 3D model project, Bill West, Mar 26th 2017, #26
      RE: Titanic 3D model project, Bill West, Mar 27th 2017, #27
RE: Titanic 3D model project, Scott Andrews, Jun 25th 2017, #127
      RE: More regarding WTD at WTB "K", Scott Andrews, Jun 26th 2017, #128
           RE: More regarding WTD at WTB , SteveFury, Jun 28th 2017, #129
RE: Titanic 3D model project, SteveFury, Mar 27th 2017, #28
RE: Titanic 3D model project, Bill West, Mar 27th 2017, #29
      RE: Titanic 3D model project, SteveFury, Mar 28th 2017, #30
RE: Titanic 3D model project, SteveFury, Mar 30th 2017, #31
RE: Titanic 3D model project, Bill West, Mar 30th 2017, #32
      RE: Titanic 3D model project, SteveFury, Mar 30th 2017, #33
           RE: Titanic 3D model project, Karol_W, Mar 30th 2017, #34
                RE: Titanic 3D model project, SteveFury, Mar 30th 2017, #35
                     RE: Titanic 3D model project, SteveFury, Mar 30th 2017, #36
                          RE: Titanic 3D model project, Bill West, Mar 30th 2017, #37
                               RE: Titanic 3D model project, SteveFury, Mar 30th 2017, #38
RE: Titanic 3D model project, SteveFury, Apr 01st 2017, #39
RE: Titanic 3D model project, Bill West, Apr 02nd 2017, #40
      RE: Titanic 3D model project, tucky, Apr 02nd 2017, #41
RE: Titanic 3D model project, SteveFury, Apr 03rd 2017, #42
RE: Titanic 3D model project, Bill West, Apr 04th 2017, #43
RE: Titanic 3D model project, SteveFury, Apr 04th 2017, #44
RE: Titanic 3D model project, tucky, Apr 04th 2017, #45
      RE: Titanic 3D model project, Bill West, Apr 04th 2017, #46
           RE: Titanic 3D model project, tucky, Apr 05th 2017, #47
                RE: Titanic 3D model project, Bill West, Apr 05th 2017, #48
                     RE: Titanic 3D model project, tucky, Apr 05th 2017, #49
RE: Titanic 3D model project, SteveFury, Apr 08th 2017, #50
RE: Titanic 3D model project, Karol_W, Apr 09th 2017, #51
      RE: Titanic 3D model project, Bill West, Apr 09th 2017, #52
           RE: Titanic 3D model project, SteveFury, Apr 10th 2017, #53
                RE: Titanic 3D model project, Bill West, Apr 11th 2017, #55
RE: Titanic 3D model project, SteveFury, Apr 10th 2017, #54
RE: Titanic 3D model project, Bill West, Apr 11th 2017, #56
      RE: Titanic 3D model project, SteveFury, Apr 11th 2017, #57
      RE: Titanic 3D model project, Ralph Currell, Apr 11th 2017, #58
           RE: Titanic 3D model project, Bill West, Apr 11th 2017, #59
                RE: Titanic 3D model project, Bill West, Apr 11th 2017, #60
                     RE: Titanic 3D model project, Ralph Currell, Apr 11th 2017, #61
                          RE: Titanic 3D model project, Bill West, Apr 11th 2017, #62
                               RE: Titanic 3D model project, Ralph Currell, Apr 13th 2017, #63
                                    RE: Titanic 3D model project, Bill West, Apr 13th 2017, #64
                                         RE: Titanic 3D model project, Ralph Currell, Apr 13th 2017, #65
RE: Titanic 3D model project, SteveFury, Apr 14th 2017, #66
RE: Titanic 3D model project, Karol_W, Apr 15th 2017, #67
      RE: Titanic 3D model project, Bill West, Apr 16th 2017, #68
           RE: Titanic 3D model project, SteveFury, Apr 16th 2017, #69
                RE: Titanic 3D model project, Bill West, Apr 16th 2017, #70
RE: Titanic 3D model project, SteveFury, Apr 18th 2017, #71
RE: Titanic 3D model project, Bill West, Apr 19th 2017, #72
      RE: Titanic 3D model project, SteveFury, Apr 19th 2017, #73
RE: Titanic 3D model project, SteveFury, Apr 23rd 2017, #74
RE: Titanic 3D model project, Bill West, Apr 23rd 2017, #75
      RE: Titanic 3D model project, SteveFury, Apr 23rd 2017, #76
           RE: Titanic 3D model project, Bill West, Apr 24th 2017, #77
RE: Titanic 3D model project, SteveFury, Apr 30th 2017, #78
RE: Titanic 3D model project, Bill West, May 01st 2017, #79
RE: Titanic 3D model project, SteveFury, May 01st 2017, #80
RE: Titanic 3D model project, Bill West, May 02nd 2017, #81
RE: Titanic 3D model project, SteveFury, May 06th 2017, #82
RE: Titanic 3D model project, Bill West, May 10th 2017, #85
RE: Titanic 3D model project, SteveFury, May 07th 2017, #83
RE: Titanic 3D model project, Ralph Currell, May 08th 2017, #84
RE: Titanic 3D model project, Bill West, May 10th 2017, #86
      RE: Titanic 3D model project, SteveFury, May 10th 2017, #87
           RE: Titanic 3D model project, SteveFury, May 10th 2017, #88
                RE: Titanic 3D model project, Bill West, May 10th 2017, #89
                     RE: Titanic 3D model project, Bill West, May 10th 2017, #91
RE: Titanic 3D model project, Scott Andrews, May 10th 2017, #90
RE: Titanic 3D model project, SteveFury, May 11th 2017, #92
      RE: Titanic 3D model project, Bill West, May 11th 2017, #93
           RE: Titanic 3D model project, Bill West, May 12th 2017, #94
                RE: Titanic 3D model project, Bill West, May 12th 2017, #95
RE: Titanic 3D model project, Bill West, Jul 12th 2017, #130
RE: Titanic 3D model project, SteveFury, May 13th 2017, #96
RE: Titanic 3D model project, Bill West, May 14th 2017, #97
RE: Titanic 3D model project, SteveFury, May 15th 2017, #98
RE: Titanic 3D model project, Bill West, May 16th 2017, #99
RE: Titanic 3D model project, Ralph Currell, May 16th 2017, #100
RE: Titanic 3D model project, SteveFury, May 16th 2017, #101
RE: Titanic 3D model project, Bill West, May 16th 2017, #102
RE: Titanic 3D model project, Ralph Currell, May 16th 2017, #103
RE: Titanic 3D model project, SteveFury, May 17th 2017, #104
RE: Titanic 3D model project, Bill West, May 17th 2017, #105
      RE: Titanic 3D model project, Bill West, May 18th 2017, #106
RE: Titanic 3D model project, Bill West, May 18th 2017, #107
RE: Titanic 3D model project, SteveFury, May 19th 2017, #108
      RE: Titanic 3D model project, Bill West, May 20th 2017, #109
           RE: Titanic 3D model project, SteveFury, May 20th 2017, #110
                RE: Titanic 3D model project, Bill West, May 21st 2017, #111
                RE: Titanic 3D model project, Scott Andrews, May 24th 2017 #112
                     RE: Titanic 3D model project, SteveFury, May 24th 2017, #113
                          RE: Titanic 3D model project, William W. Young, May 24th 2017, #114
                          RE: Titanic 3D model project, Scott Andrews, May 28th 2017, #116
                               RE: Titanic 3D model project, Bill West, May 29th 2017, #117
RE: Titanic 3D model project, SteveHall, May 27th 2017, #115
RE: Titanic 3D model project, SteveFury, May 30th 2017, #118
RE: Titanic 3D model project, Ralph Currell, Jun 01st 2017, #120
RE: Titanic 3D model project, SteveFury, Jun 01st 2017, #121
RE: Titanic 3D model project, Bill West, Jun 02nd 2017, #122
RE: Titanic 3D model project, SteveFury, Jun 05th 2017, #123
RE: Titanic 3D model project, SteveFury, Jun 11th 2017, #124
RE: Titanic 3D model project, Bill West, Jun 23rd 2017, #125
RE: Titanic 3D model project, SteveFury, Jun 25th 2017, #126

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Titanic artwork at top of page is owned and copyright of Stuart Williamson and is used with permission.