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E.M.F.

Zoomup

Please excuse this diversion from the norm. But I though that the diverse learned members of the forum may be able to help me. I have been studying the S.S. Arandora Star which was a 16,000 ton (Gross register) ship run by the Blue Star Line of 3, Lower Regent Street, London S.W.1. 

I am trying to obtain a passenger list for 1936 to identify a passenger whose travel trunk bore the initials "E.M.F." I believe that this passenger was on a Med. cruise.

Can anyone help please?

The story of the ship is very interesting and sad.

"Her turbines, main generators and emergency generators were all immediately put out of action and therefore knocked out all lights and communications aboard." I presume that the emergency radio messages were possible because the radio used backup batteries after the generators were destroyed.

SS Arandora Star - Wikipedia

Arandora Star (bluestarline.org)

Thanks,

Z.

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  • 0

    Can not help WRT the passenger list, but as regards back up batteries, I can confirm that the radio transmitters on board ships were required to have backup batteries in or immediately adjacent to the radio room. Exact arrangements differed but a 6 volt or 12 volt vehicle type lead acid battery  for LT or filament supplies was usual, trickle charged from the lighting supply.

    The emergency HT supply often used large banks of dry batteries.  about 100 batteries in series, each of the 4.5 volt 126 "door bell" type was one arrangement. Able to provide several hundred volts HT at an amp or so. Replaced once a year or after significant use.

    At the time in question, the emergency transmitter on a ship MIGHT JUST POSSIBLY have been an arc transmitter. A high powered electric arc from an induction coil and a tuned circuit.

  • 0 in reply to broadgage

    Did the 126 door bell batteries have two terminals with screws to secure the wires, initially made of brass then in more modern time made of plastic?

    I have just found this picture of a 126 battery.

    www.radiomuseum.org/.../ever_battery_126.html

    Z.

  • 0 in reply to Zoomup

    Vintage marine radios.

    www.tripadvisor.co.uk/LocationPhotoDirectLink-g503775-d8600890-i184647415-Sandford_Mill_Museum-Chelmsford_Essex_England.html

    Z.

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