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Oil filled Stern Tubes

2598 Views 39 Replies 11 Participants Last post by  Dave Lambert
I was working at a shipyard in Tampa when they were building 5 tankers. They were ER aft jobs, so only ashort length of shafting in the ER. On the LOP system they had the ability to purify the stern tube. You had oil filled seals with a header tank on the inboard and outboard ends, plus the oil around the shaft to lubricate it with a header tank also.

We get back from trials so next day thought I would line up a LOP on this system. I ended up pulling water into the stern tube so something was obviously wrong with the system.

Never came across anything like this before. As long as your seals were ok and you had that head of oil above the water line than you shouldn't have any leaks inboard only outboard.
Though it was US designed and built and had some really backward designs.
Anybody come across this set up before?
Wood Naval architecture Building Watercraft Engineering

Finished ship image to follow when on PC.
https://en.wikipedia.org/wiki/USNS_Paul_Buck this was 1st of 5.
Ocean Product Tankers Inc.
Due to a senior management faux pas the 2nd hull was ready first. They all started with Ocean ........ names which would be easier on the tongue , but reverted to the US tradition of naming them after seamen who had won medals which ended up with long Italian names complete with the inevitable middle i initial included such as Lawrence S Giannella and similar mouthfulls over VHF.
Even the Chinese names were better like Wan Long Dong and the like.
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Did you have any trouble with these new puri's, failed sensors etc. Still had the plates I assume and auto cleaning like the A boats.
The RBS thing sounds a bit like the Greek/ Monrovian high jinks with their fleets. Mind you old Vestey was at it from way back, every ship a stand alone company, he had various companies round the world like Lion Shipping, Calmeda (sounds more of a social disease), Austasia, some South American outfit. Then the registered office in a back street in Paris.
There were no flies on him.
I have seen Harry since the Mandama, at our Duty Mess Lunch in the Sunderland area, it was just getting going when Covid put the blocks on it. Met up with Keith Gladman a couple of times and saw Keith Eade at a Liverpool reunion.

Have you ever come across a stern tube that has been piped up to a LOP?
Dudley was ok until he had a few drinks, then he would become a bit punchy from all accounts. I sailed with him after he had been promoted to Master for a few years on the America Star.
I believe you live in Oxfordshire, I am down in Newbury.

Wonder if those two engadets ever made anything of themselves, or became actors. They seem to like dressing up.
When we were in Freemantle they cut a road sign down in the docks and brought it to the ship, they couldn't even cut it straight perhaps far too much to drink. That didn't go down very well with all concerned. Not sure what happened afterwards, that was between Harry and the OM.
I am in touch with Dave Richards who took over the 2nds job after me. Both he and Keith Gladman got their redundancies after they got off. I resigned to get married and go ashore.
Still have the plates but you don't auto clean, they clean when the sensors tell them to, the Westfalias are now belt driven. Sludge level tank lasts for ever.
It was 1998 Mr Vestey sold Blue Star lock stock and barrell (Including the model BSL ships in Albion House) PONL owned the lot. RBS was a PONL subsiduary.
My last ship, was one of the big ones at that time, small ship now. A mere 8450teus, 12 Cylinder RT flex 92. Very impressive.
dear oh dear, i am a liverpudlian from a seagoing family, raised schooldays leeds, so I could not as a lancky play for yorkshire cricket, again so hull was nearest to my leeds base. Why offshore and shields for the extras. I was sponsered by AUNTIE BOT? and worked in the shipping department of DOT/MSA, newcastle and London then HSE Offshore based in LONDON, then Norwich But travelled the UK OFFSHORE Industry, as a marine surveyor.
NICKName i spout confusion, hence my fellow engineers called me captain confusion. Are you confused??? I trust not.
Got you. Did you ever have to mark exam papers or conduct orals at any point?
Old Barr was BOT in Hull, not sure if he was related to my old Maths teacher at school, same name and build, never thought ask at the time, you are all keyed up.

My writing was so bad on a couple of papers for Chiefs he failed me and passed the message to Dave Taylor to suggest I used a fountain pen which would slow my writing down and make it legible. If I had been sitting medical exams I may have been ok as Drs writing was known to be attrocious and they probly went to the same schools as the dispensing chemist so they all wrote the same.
I did apply for a job with BOT to do with the fishing industry but they wanted Extras. Lloyds was the same, but they had to relax because Graduates of Marine or Mechanical hadn't the experience and there was a bit of a wastage rate. Don't think they liked the idea of crawling about in a crankcase or boiler, yet ex Merch it didn't worry them.
Did you ever have to use any of the fancy Maths from Extras.
Seemed to remember something called Matrices, I always thought that was some how connected with the master, mistress and mattress.
Then there was sampling for QA and a bunch of funny formulas, never needed that when sampling different beers. Didn't see where that came into ships and one offs. The Maths chap at Shields had been a production engineer, which I can see the relevance. Dry old stick he was. The rest of the lecturers were ex Merch.
Old Calvert, took us for Hydrodynamics & Fluids, would say to us if he was looking at our work, ' Let the dog see the rabbit' or 'If you don't know what your looking for, you will never find it' . He was a bit of a north countryman, probably had a ferret or two at home.
It was all interesting stuff that came in handy when boiler surveying. But I reached retirement without entering the 'work house' (where the snow was raining fast). If you don't try you will never know.
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Check your pm's Brian.
Check your pm's Brian.
I don't usually bother with pm's. I have checked this time and replied.
dear oh dear, i am a liverpudlian from a seagoing family, raised schooldays leeds, so I could not as a lancky play for yorkshire cricket, as a marine surveyor.
NICKName i spout confusion, hence my fellow engineers called me captain confusion. Are you confused??? I trust not.
I think we have corresponded in the past re Hull fish dock.
Not sure what's happening with this site, its reverted to my old name- but Johnfitpatrick and Patrickfitzjohn are two stewards.
ST, I hate to carp, but shouldn't that be "hinders natural selection"?
ST, I hate to carp, but shouldn't that be "hinders natural selection"?
Varley, it works either way for me, but I will change it, well I was but couldn't find where, checked account details, signature etc. No sign of it.

A'ha, its only on the Sternchallis not the Chalisstern.
That name change was due to Google poking its nose in and upsetting the apple cart.
Happy with that Varley?
Got you. Did you ever have to mark exam papers or conduct orals at any point?
Old Barr was BOT in Hull, not sure if he was related to my old Maths teacher at school, same name and build, never thought ask at the time, you are all keyed up.

My writing was so bad on a couple of papers for Chiefs he failed me and passed the message to Dave Taylor to suggest I used a fountain pen which would slow my writing down and make it legible. If I had been sitting medical exams I may have been ok as Drs writing was known to be attrocious and they probly went to the same schools as the dispensing chemist so they all wrote the same.
I did apply for a job with BOT to do with the fishing industry but they wanted Extras. Lloyds was the same, but they had to relax because Graduates of Marine or Mechanical hadn't the experience and there was a bit of a wastage rate. Don't think they liked the idea of crawling about in a crankcase or boiler, yet ex Merch it didn't worry them.
Did you ever have to use any of the fancy Maths from Extras.
Seemed to remember something called Matrices, I always thought that was some how connected with the master, mistress and mattress.
Then there was sampling for QA and a bunch of funny formulas, never needed that when sampling different beers. Didn't see where that came into ships and one offs. The Maths chap at Shields had been a production engineer, which I can see the relevance. Dry old stick he was. The rest of the lecturers were ex Merch.
Old Calvert, took us for Hydrodynamics & Fluids, would say to us if he was looking at our work, ' Let the dog see the rabbit' or 'If you don't know what your looking for, you will never find it' . He was a bit of a north countryman, probably had a ferret or two at home.
It was all interesting stuff that came in handy when boiler surveying. But I reached retirement without entering the 'work house' (where the snow was raining fast). If you don't try you will never know.
Yes dear sir, I was pure gypsie in te marine Industry, Tankers-Fleet safety Officer-Inert gas plants= Fish dock hull and fleetwood Insurance surveyor, assistant fleet superintendent,Glasgow based. BOT Auntie all sections- EXAMS HQ -engineers= Port eng and ship surveyor-offshore=transfered to HSE UK Offshore/retired.
Cpt C, sounds like you was never anywhere long enough to get unpacked, but probably an interesting life.
With respect to the research vessel that fell over in Leith, who would carry out the investigation? BOT or HSE? Or between them.
the leit drydock incident??? I am unsure these days who or whom would carry out the investigations. I suspect HSE Inspectorate? But i cannot confirm, The fault to me lies in the lack of appriciation of the vessels design/hull form, and displacement as lightship on the drydock blocks_ Leith drydock company, would I have thought for insurance purposes, would have ensured a correct docking procedure, so my inclination is a lack of consultation=owners/drydock company= so HSE for or under the Health and Safety at Work acts 1974 and amendments???
the leit drydock incident??? I am unsure these days who or whom would carry out the investigations. I suspect HSE Inspectorate? But i cannot confirm, The fault to me lies in the lack of appriciation of the vessels design/hull form, and displacement as lightship on the drydock blocks_ Leith drydock company, would I have thought for insurance purposes, would have ensured a correct docking procedure, so my inclination is a lack of consultation=owners/drydock company= so HSE for or under the Health and Safety at Work acts 1974 and amendments???
apart from the legal, ownership and technical questions, I ask a more basic question=''IF IT LOOKS WRONG, IS IT WRONG????
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I was working at a shipyard in Tampa when they were building 5 tankers. They were ER aft jobs, so only ashort length of shafting in the ER. On the LOP system they had the ability to purify the stern tube. You had oil filled seals with a header tank on the inboard and outboard ends, plus the oil around the shaft to lubricate it with a header tank also. We get back from trials so next day thought I would line up a LOP on this system. I ended up pulling water into the stern tube so something was obviously wrong with the system. Never came across anything like this before. As long as your seals were ok and you had that head of oil above the water line than you shouldn't have any leaks inboard only outboard. Though it was US designed and built and had some really backward designs. Anybody come across this set up before? View attachment 696986 I know These stern tube systems pretty well. They are really 3 systems. Lube OIl for the bearing, and cooling from a head tank high up in the ER so there would be plenty of oil during a power failure and higher pressure than the sea water. Then, each of the seals has its own system. Much lower head pressure with viscous oils and sophisticated shaft seals on each end. If you pulled in water with the purifier, it's because it came through the after seal. That's the only exposure to water. These systems are extremely reliable, even the seals if they are properly maintained.
Question one with any stern tube lube oil system with obvious water content "is it fresh or sea water?" (provided vessel is operating mainly in seawater). I have had a lot of experience with up to 0.5% fresh water due to heavy condensation.
We had a coalescer to take care of the condensate. Otherwise salt water is the most likely, but more likely is LO going into SW since the LO pressure should be much higher.
Yes know Dave Taylor (ex Blue Star), he used to run a pre-sea class for apprentices thinking of going to sea, it was based on 2nds EKs in Motor, Steam & General, then I met up with him when doing part B 2nds & Chiefs. Dave was Deputy head of the department and looked after the Admin for ticketed courses.
Ted Barnet was head honcho of the Marine department which also covered Cadets. Ted took a class of Motor EK's in Chiefs to keep his hand in.
I think Ron Pyewell looked after admin for some of the cadets, he was ex deck I believe and took Naval Arch.
There was a Naval Arch from Dunstans, (local shipyard) that took ship construction in 2nds.
Then there was Stan the Man for Electro, definately one of the lads, sense of humour. He must have been scream in the bar at sea.
2nds pt A jan 75, B Jan 78 1st class A Sept 78, B Jan 82.
I as up as soon as I had enough sea time.
Looks like I was stiil serving my time when you was up at Hull and could have been another head of Dept before Ted. I heard his name mentioned but don't know if he moved to Queens Gardens.
It is no longer a Tech College but has dubious University status unlike the red brick university on Cottingham road.
My dabble at Extras was a bridge to far too late, my previous life hadn't prepared me for the eye watering Maths of that course. Failed all subjects and got a job with the Insurance Inspection industry, inspecting pressure vessels, perhaps more than your Lloyds surveyor would, plus I was home each night not in some far flung place in the world.

Dave Taylor once told me that you always got a tribe of Patels & Khans coming down from Shields to Hull for the exam as they thought we got easier exams in Hull because the pass rate was higher. Same exams, same caliber of lecturers, which meant there was only one other variable, but they couldn't work that out.
I have a sheet of schematics in the loft of the oil system, I will scan it and put it up on the post to prevent confusion.
I did Chiefs in Hull in 76 and got to know Dave and Ted quite well. I got to know the examiner in Hull Bob Barr quite well as I had all my exemptions from Part A from Oz, so had to supply the Oz data to the examiner to have them accepted. Had a great time at the Hull Marine College, finished up married to a nurse from Hull. In 78 I when to South Shields for Extras although I did the exam in Hull.
I did Chiefs in Hull in 76 and got to know Dave and Ted quite well. I got to know the examiner in Hull Bob Barr quite well as I had all my exemptions from Part A from Oz, so had to supply the Oz data to the examiner to have them accepted. Had a great time at the Hull Marine College, finished up married to a nurse from Hull. In 78 I when to South Shields for Extras although I did the exam in Hull.
Hi
I guess you would have been doing Chief`s roughly the same time period as myself? and Chris Pailthorpe?. So Friday Lunches in the "Big Queens"?. Where we often had "Stan The Man" for company and "Electricals". Then back in lectures to fall asleep to the dulcet tones of Ron Pywell. 🤣

Pete
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We had a coalescer to take care of the condensate. Otherwise salt water is the most likely, but more likely is LO going into SW since the LO pressure should be much higher.
Must admit never seen a coalescer in the sterntube L.O system but agree S.W contamination most usually the problem. One vessel I was super for went to a handover docking where new owners asked for tailshaft to be pulled. When removed the white metal fell out like jigsaw puzzle pieces. Investigation found C/E had known about high temps in s/t for months and had the thermos disconnected to stop annoying alarms. Just topped the oil up now and again. The vessel kept going though with mostly water lubricant. Shaft was hardly marked. We replaced with a Thordon type bearing approved by class and new owners. Always amazing what you can get away with!
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