tide prediction machines philip l. woodworth national oceanography centre, liverpool sloc meeting 21...
TRANSCRIPT
![Page 1: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/1.jpg)
Tide Prediction Machines
Philip L. WoodworthNational Oceanography Centre, Liverpool
SLOC Meeting 21 June 2013
![Page 2: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/2.jpg)
Doodson-Légé Machine
![Page 3: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/3.jpg)
William Thomson, 1st Baron Kelvin
‘Father’ of TidePrediction (TP) Machines
![Page 4: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/4.jpg)
First (official) tidePrediction machine bySir WilliamThomson (Lord Kelvin)1872, now in Science Museum.
10 constituents.
![Page 5: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/5.jpg)
Edward Roberts
Another father ofTide Prediction machines
![Page 6: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/6.jpg)
![Page 7: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/7.jpg)
India Office Machine1877 made by A. Légé & Co., London to design of Edward Roberts. 20 (later 24) constants.
![Page 8: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/8.jpg)
Tide Prediction Machines
• Only 25 Tide Prediction (TP) machines were ever built (plus models and prototypes no doubt)
• Three machines were associated with Bidston: the ‘Kelvin’, ‘Roberts’ and ‘Doodson-Légé’ machines
• The DL machine with 42 constituents was one of the last and largest although not the largest ever (see below).
![Page 9: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/9.jpg)
![Page 10: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/10.jpg)
Kelvin Machine
• The Liverpool Tidal Institute was funded in 1925 by Charles Booth (Booth Shipping Lines) to buy a new 25-28 constituent prediction machine (the Kelvin machine) for its sole use.
• Doodson took a lead in its construction and operation and used the machine to start an important business in tide table production.
• The Kelvin and Roberts machines were used for D-day predictions etc.
• The Kelvin machine was given (or sold) to SHOM after WW2 and used up until 1966. (Moved to Brest in 1970).
• An explanation how it worked in Joyce Scoffield’s book.
![Page 11: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/11.jpg)
BidstonKelvinMachine
![Page 12: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/12.jpg)
![Page 13: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/13.jpg)
Bidston Kelvin machine now in lobby of SHOM at Brest
![Page 14: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/14.jpg)
Roberts Machine
• When HWT Roberts (son of Edward) died in 1929, the LTI (Doodson) took over the Roberts business.
• That brought the ‘Roberts’ TP Machine of 1906 to Bidston, which was larger than the LTI machine (it had 40 constituents) but in need of an overhaul which Doodson oversaw.
• Beware it is called the ‘Légé machine’ in Doodson publications
• The Roberts machine now in the Liverpool Museum.
![Page 15: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/15.jpg)
Roberts“Universal Tide Predicter” of 1906, winner of the “Grand Prix” of the Franco-British Exhibition of 1908
![Page 16: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/16.jpg)
![Page 17: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/17.jpg)
![Page 18: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/18.jpg)
![Page 19: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/19.jpg)
![Page 20: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/20.jpg)
Doodson Machine
• Doodson’s final involvement with machines was the DL installed in 1950.
• 42 constants
![Page 21: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/21.jpg)
Doodson-Légé Machine
![Page 22: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/22.jpg)
![Page 23: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/23.jpg)
A Couple of Other Machines
Valued by their Owners
![Page 24: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/24.jpg)
![Page 25: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/25.jpg)
Now in lobby of Norwegian Hydrographic Office Stavanger
![Page 26: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/26.jpg)
![Page 27: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/27.jpg)
![Page 28: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/28.jpg)
![Page 29: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/29.jpg)
One Other Machine
Not Valued by its Owner
![Page 30: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/30.jpg)
![Page 31: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/31.jpg)
Roberts machine
![Page 32: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/32.jpg)
![Page 33: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/33.jpg)
![Page 34: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/34.jpg)
![Page 35: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/35.jpg)
Most of the others we know where they are or what happened to them e.g.
- India machine now at Dehra Dun- Philippines machine
Others we don’t - but must be easy to find if we had the time e.g. Spanish and Argentina machines
![Page 36: Tide Prediction Machines Philip L. Woodworth National Oceanography Centre, Liverpool SLOC Meeting 21 June 2013](https://reader031.vdocuments.us/reader031/viewer/2022020417/56649e255503460f94b139a5/html5/thumbnails/36.jpg)
Plan now is for Julie Ledder to get either the Roberts machine or Doodson-Lege machine back on loan from NML for display in the JPB atrium when building work is finished – watch this space.