Diesel S Boat Query.

janner

MIA
Book Reviewer
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What are the two circular things forward of the after periscope? My suggestion is that they are engine room telegraphs. This is a pic. of Submarine Spitefulls bridge.
 

WreckerL

War Hero
Super Moderator
As a mere skimmer, may I suggest they could be used for taking on fresh water/fuel.
I can't see how that would work.
Alternatively:

a. Remote layer & trainer for the foredeck gun,

or

b. Remote foreplanes & after planes controls for running 'shallow' or trimmed down.
As above, I can't see how that would work for either or why you would need to remotely operate the gun or the planes. They look like smaller versions of the engine room telegraphs we had on the Rusty B, which is why I agree with janners hypothesis.
 

huwshpis

War Hero
@WreckerL, I think you and Janner are probably right, but I'm puzzled by one thing. RN practice (and that of, for example, Cunard) was to have 2 telegraphs per shaft, one for power and direction (slow, half, full ahead/astern) and one for the number of revolutions. I can't make out a revolutions telegraph for either shaft in the photo.
 

janner

MIA
Book Reviewer
Just had a email back from Eric Andrews, He was Scratcher on the Sidon (same class of Boat for those that don't know) in his opinion they are the engine room telegraphs. Huw, I don't remember Diesel Boats having the Rev counters/indicators.
 

huwshpis

War Hero
Just had a email back from Eric Andrews, He was Scratcher on the Sidon (same class of Boat for those that don't know) in his opinion they are the engine room telegraphs. Huw, I don't remember Diesel Boats having the Rev counters/indicators.

Thanks, @janner. I did one trip on an 'O' boat as a passenger in the very early 80's and can't remember (if I ever knew) about the telegraphs. I did, however, find a combined telegraph for sale on ebay for £1950 this morning.

https://www.ebay.co.uk/itm/Bronze-S...456164?hash=item4619da6e24:g:IDMAAOxy79JRicIH

The seller is apparently in Pompey Dockyard
 

janner

MIA
Book Reviewer
Boats had very small dials by the helm, if you haven't visited the Historic Dockyard it's well worth a look, with several different museums under the one roof so to speak, Royal Marines Museum is moving in as well. There is a large shop selling all sorts of Naval stuff.
 
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