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N.E.M. - Doxford Oil Engine
N.E.M. - Doxford Oil Engine

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eriskay



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Registered: March 2006
Location: Scotland
Posts: 1,043
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Machinery from the Richardson Westgarth Group.

A turbo-charged, direct-reversing, opposed piston, 2-cycle 8,000 BHP oil engine manufactured by North Eastern Marine Engineering Company Limited of Wallsend, founded in 1865.
· Date: Thu, 15 April 10 · Views: 1,127
· Tags: 2 · Filesize: 158.1kb, 158.2kb · Dimensions: 873 x 900 ·
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Keywords: N.E.M. - Doxford Oil Engine
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wazim

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Registered: January 2008
Location: Port of Spain, Trinidad
Posts: 1,120
Thu, 15 April 10 14:31

Brilliant photo.........

------------------------------
Best Regards,
Waz
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Mike S

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Registered: December 2005
Location: Perth Western Australia
Posts: 985
Thu, 15 April 10 20:20

Brings back memories of long ago. Dad would have been proud, he was there during the war and MD in the fifties.
Poetry in motion!
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eriskay

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Registered: March 2006
Location: Scotland
Posts: 1,043
Fri, 16 April 10 05:35

Yes - I was thinking of you when I was posting it, Mike, following your information from previously. N.E. Marine had to be about one of the foremost marine engineering concerns of the day.
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Mike S

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Registered: December 2005
Location: Perth Western Australia
Posts: 985
Fri, 16 April 10 07:54

Eriskay.......are you able to put a date on this engine please.
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eriskay

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Registered: March 2006
Location: Scotland
Posts: 1,043
Fri, 16 April 10 12:30

Not accurately, I'm sorry, only that it would be in the mid to late 1950s.
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eldersuk

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Registered: October 2005
Location: Liverpool
Posts: 1,507
Fri, 16 April 10 18:33

First turbo-charged Doxford was built by Scotts' in 1957, so it must be later than that.

Derek
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Mike S

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Registered: December 2005
Location: Perth Western Australia
Posts: 985
Fri, 16 April 10 21:29

OK I think it might be 1958/9. I suspect I recall family discussions of the first turbo-charged Doxford from NEM around that time. Dad had moved to National Gas then so it would have been one of his last at NEM. Regardless he would have been in the chair when it was ordered. These flash back memories are truly amazing.
My sincere thanks to SN for bringing these forward for all to see.
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Mike S

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Registered: December 2005
Location: Perth Western Australia
Posts: 985
Fri, 16 April 10 21:32

There is an interesting person standing on the tops by unit No 3. I am not sure if I am looking at a ghost or not. Very likely not however it is awfully like J.E.Smith however he would have had his trilby hat on! He had two.
One for the works and one for best!
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Doxfordman

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Registered: March 2005
Location: Hobart, Tasmania
Posts: 2,128
Sat, 17 April 10 02:37

A very late LBD or an early "P" type?

------------------------------
Dox (R907127)
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Mike S

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Registered: December 2005
Location: Perth Western Australia
Posts: 985
Sat, 17 April 10 04:46

Mmmm........
According to the history of Percy Jackson the P was a bit different around the top end. Looks like an LBD to me as they were apparently turbo charging them in the fifties.
I bow to others superior knowledge here........I just know that the best engines that shoved me around the world were the mighty Doxfords all those years ago.
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eldersuk

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Registered: October 2005
Location: Liverpool
Posts: 1,507
Sat, 17 April 10 20:13

I just know that the best engines that shoved me around the world were the mighty Doxfords all those years ago.

Couldn't agree more.Do you remember some of the earlier NEM Doxfords had an arrangement called NEMSTOP on them. It was an extra lever on the console which used starting air to open the cylinder relief valves in sequence, thus unbalancing the engine and bringing it to a rapid stop. It did the job, but as you can imagine was very noisy - emergency use only!
Derek
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Mike S

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Registered: December 2005
Location: Perth Western Australia
Posts: 985
Sun, 18 April 10 05:59

Oh dear........this is becoming a very memorable discussion. I had decided to make the sea my career in 1956. I was 16 years old and Dad arranged for me to sail on the trials of the Lamport & Holt new build "MV Rosetti."
The idea was for me to see a real ship and a real engine room and she was fitted with a 5 cyl oil engine. It had the NEM stop fitted and noisy though it may have been it certainly worked. The man in charge was a remarkable man called Jackie Stevens. We sat eating our lunch ham sandwiches in the cross alleyway while she was heading up to the Newbiggin Mile and I can still hear him saying "You are watching the closest thing man has made to perpetual motion young lad!" All in a broad soft Geordie accent. What that man did not know about a Doxford was not worth knowing. He used the NEM stop on the crash stop trials to advantage.
It was the air start trials that stick in my mind. He was notorious for getting an impossible number of starts out of an air bottle. They were well in front of the trial schedule and he gave me the wink to stand next to him on the starting platform. He then proceeded to get well over 40 starts out of one bottle bouncing the engine from ahead to astern and never lifted a relief valve. He then turned to some one and said "Tell them that I am thirsty and need a brew....forty odd should be enough."!
The reply from the Bridge was not for publication.
I could not handle the maths so I went on deck. Always loved those big Doxfords all the same.
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eriskay

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Registered: March 2006
Location: Scotland
Posts: 1,043
Sun, 18 April 10 07:36

Mike :

Great recollections, really enjoying these anecdotal reminiscences.

With regard to the NEMSTOP feature as raised by Eldersuk and yourself, for general interest here is what the old RWG brochure (1959/1960) mentions on subject :

(QUOTE)
North Eastern Marine has introduced refinements to the Doxford Engine. One of these, the NEMSTOP braking gear, designed and patented by North Eastern Marine and fitted to many Doxford engines, has brought a 16,000 tons fully loaded tanker to a standstill in 60 seconds - instead of the normal 4 minutes 45 seconds. It has also taken way off a vessel from a speed of 14 knots in only 8 minutes 37 seconds, a saving of over 2 minutes. (UNQUOTE)

And here was what it said about the NEM-Gotaverken Engines :

(QUOTE)
The Richardsons Westgarth Group can also offer the NEM-Gotaverken diesel engine. This is a development of the well-known Swedish design which first appeared shortly before the last war. It has been fitted to a number of ship types, including passenger liners for transatlantic service, cargo liners, tankers, ore-carriers, and general cargo ships. It is available in units having from five to twelve cylinders and a power range from 1,850 to 22,000 BHP.

The NEM-Gotaverken engine is of a robust and reliable type, of simple construction with all parts easily accessible and capable of speedy dismantling and inspection. This is particularly useful for ships requiring a quick turn-around. North Eastern Marine is the sole licensee for the British Commonwealth, but can also supply these engines to West garmany, Portugal, Poland, Yugoslavia, China and countries in South America.

In addition, high-speed NEM-Gotaverken engines for operating auxiliary generator units can be manufactured at Wallsend. (UNQUOTE)

I will try and post a few additional photographs later today/tonight on 'Engines & Ship Mechanics' gallery

Angus
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eriskay

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Registered: March 2006
Location: Scotland
Posts: 1,043
Sun, 18 April 10 08:59

Image showing the NEMSTOP braking feature posted
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Steve Oatey

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Registered: February 2008
Location: Vancouver Island
Posts: 1,211
Sun, 18 April 10 15:09

Looks like the turbocharged NEM Doxford LBD we had in RFA Plumleaf, which was a 1960 build.
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