Wednesday, January 19, 2011

THE NAIVE SAILOR , TURNBUCKLES AND BOTTLE SCREWS -- CAPT AJIT VADAKAYIL



I plan to start a NAIVE SAILOR SERIES.



( if you read my blog on SNOW SHOVELLING AND BACK ACHE -- i have included a piece on rat guards--why it will fall off for the next 500 years  )

the idea is NOT to be sarcastic or to patronise-- but to save lives.

People who have sailed with Capt Vadakayil will vouch, that he is a HUGE champion of the poor mushroomed sailor at sea.

(Digression: A mushroom is always in the dark and fed with lot of crap.)

We at sea are ruled by powers ashore who secured their shore chairs , by tilted playing fields and NOT merit, and their ability to compromise and be hypocrites.


So when we have a company seminar ashore , and the sailing party comes in contact with ashore party, there is so much of EGO hassles , lack of respect and immaturity.


This has to be seen to be believed.

This can never ever happen in some other professional strain , like say a world seminar of brain surgeons. An administrator ex-surgeon , who has not lifted the scalpel for 30 years , will never ever try to brow-beat or bulldoze a surgeon who does a brain operation job daily, with 100% success. This happens only with sailors.

THIS POST IS ABOUT TURN BUCKLES AND BOTTLE SCREWS--

Once i attended a company seminar in a 7 star hotel , and the Dutch Technical director was telling a group of 200 Masters, Chief officers and Chief Engineers , about how a container ship lost their containers as the lashings were lose.

And then his cure and prevention rolled into one moronic solution was to keep checking and tightening the container lashing turnbuckles every 12 hours. He went on and on--literally frothing from the mouth--

When he had got all in agreement , I got up , a cordless mike was thrust into my hand-- as when Capt Vadakayil speaks you get nothing but the NAKED TRUTH-- it must be loud and clear.

i said - " If a container turnbuckle is tightened it remains there, without loosening itself  for the next 1000 years" .

there was shocked silence -- i could see the MD had broken into a wry smile as he knew , that Vadakayil would take it to the logical bitter end.

It was time to lie back and enjoy, what is inevitable.

here is a gist of what i told him--the blow by blow account may be embarrassing to read--

what is a nut and a bolt? how does the nut remain in position after tightening?

It is about elasticity of the steel bolt. This is why washer rings are used , in the absence of CHECK NUTS.

This is why the Japanese Kosaka  Deepwell Pumps came a cropper. Their impeller was secured by stainless steel bolts and nuts. This usually worked lose with disastrous effects.

The Framo deepwell pump, understood this. They used nylon single use bolts and nylon washers. The impeller will NOT work lose.

So this means if if tighten a bottle screw, what you do is to bring two ends closer. Like when you  tie your pyjamas with a single overhand knot.

Now you need to hold it in position. On your pyjama it will be another overhand knot to make a reef knot ( a granny knot by land lubbers ).. On a bottle screw this boils down to TIGHTENING THE CHECK NUT -- or inserting a spike so that it will not unwind.

Another option would be to introduce friction on the worms by degreasing and putting a tough layer of paint. This is why an old rusted nut and bolt remains tight despite all vibration.

So, when you tighten a nut on a blot, the bolt elongates and keeps the nut in place. On a water tight door with dogs , the supple packing pushed the door outwards like a spring and holds the dogs in place. If the packing is hard on main decks you must change the packing, as it is this suppleness which keeps the door in place.

A CHECK NUT IS SELF TIGHTENING IN VIBRATION. IT IS NOTHING BUT A SIMILAR NUT PUT OPPOSITE (OR ULTA AS WE INDIANS TERM IT.)

So next time you go on board , check your anchor lashing bottle screw, If it does not have a check nut replace it.

On chemical tankers we do NOT trust any nut and bolt system , unless it has a check nut. When i go for delivery of chemical tankers i insist that steam coil clamp nuts and bolts must have a check nut. Or very soon they will work loose and damage the sump impeller.


On brand new Japanese ships , they provide small stainless steel silver bottle screws , to secure the cabin chairs in rolling. These worms/ threads  do NOT have any friction value and with every roll they loosen. After the first bad weather, all these fancy useless bottle screws with be lying here and there in pieces.

On my chemical tanker--i do NOT allow greasing of butter worth port butterfly nuts . When my ship carries Sulphuric acid or MEG FG, and if the tank cleaning port does not have check nuts , i get a light coat of epoxy paint applied on the threads AFTER tightening it.  Only STUPID chemical chief officers use Silicon gun.


LESSON:  So, what makes the nut remain there after tightening? the FRICTION afforded by the elastic pull of the elongated steel bolt , and the compressed soft metal washer. If not, use another nut reverse to make a check nut, which is self tightening in vibrations  .

The above check nut with lever can be tightened manually or with a small hammer.


CAPT AJIT VADAKAYIL ( 28 years in command )
..

2 comments:

  1. CH
    October 13, 2014 at 6:35 AM
    Respected Captain,

    What is special about Tamil Nadu?

    How come it is able to continuously produce word geniuses like Ramanujam, Subrahmanyan Chandrasekhar, C.V. Raman, A.R. Rahman, Abdul Kalam, Venkatraman Ramakrishnan, Viswanathan Anand, Illayaraja, etc?

    Even till recently the Chief Justice of India, the Finance Minister, the RBI governor are all Tamils?

    Is there any scientific reason behind this? Because no other region has produced such super genius people in such numbers.

    Regards

    ReplyDelete
    Replies
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    Capt. Ajit Vadakayil
    October 13, 2014 at 7:06 AM
    hi ch,

    i am sure if i were a lawyer, i will NEVER EVER become CJI.

    i am sure if i were an economist, i will NEVER EVER become finance minister.

    you want me to continue ?

    when i was on my training ship in mumbai with 250 other cadets ( two years ) -- the biggest TELUs ( oily and slimy ) and SNEAKS ( snitches ) became SCC ( senior cadet captains ) , CC ( cadet captains ) , CL ( cadet leaders ) etc.

    i used to be in the CAPTAINS MONTHLY BREAKFAST PARTY ( cadet with maximum negative marks for OFFICER LIKE QUALITIES ) -- to be chewed up for breakfast every month .

    i got an EXTRA FIRST in every subject --except OFFICER LIKE QUALITIES.

    now what are OFFICER LIKE QUALITIES-

    being a son of a bit#h, being a sneak, being a hypocrite, being a as$ kisser , being a leader who will sell out his team, being a back biter, being an informer , being the best in playing to the gallery.

    so, so--

    at the passing out parade --most of the cadets who got all PRIXES were leaders -- they all got BOOOOOEEEEED !

    I remember i got only one prize--for being the best REPORTER IN ENGLISH -- the claps I got from the entire hall still resound in my ears -- along with another ROC ( royal officer cadet -who did NOT care to become a sold out leader ).

    and mind you -- i was in every single team which made my TOP ( starboard fore top ) the champion TOP.

    i was a champion sailor, rower, signaller, marks in subjects, soccer team in both years --

    but i lacked OLQ ( officer like qualities ) of being a FU#KIN' SLIME BALL.

    so in my passing our certificate , after two years of training -- i had an EXTRA FIRST in all subjects -- except OLQ where i was third grade

    so i guess they held a special meeting and GRACED ME TO FIRST CLASS --a young 18 year old boy -- .TEE HEEE !

    AT SEA, THE SAILORS DO NOT CARE FOR YOUR FOUR STRIPES- THEY ONLY CARE FOR WHO YOU ARE--

    AT SEA PEOPLE WHO KNOW ME , OR HAVE HEARD OF ME -- OR SAILED WITH ME, WILL VOUCH--

    CAPT AJIT VADAKAYIL WAS A SLAVE MORE POWERFUL THAN THE MIGHTY FU#KIN' CAESAR -- BY LIGHT YEARS .

    this has now passed on to LORE -- never ti happen again in the annals of sea .

    am i boasting ?

    -- so be it !

    humility is NOT about having a low opinion of yourselves to please the JEALOUS party.

    see, this would have been part of my post-- GAMES CAPTAIN PLAYED--

    you made me reveal it prematurely --with your TAMIL PRIDE ! TAKE IT EASY !

    check out my training ship-

    https://www.youtube.com/watch?v=MwpFBPMtnj4

    https://www.youtube.com/watch?v=k0BxC3kFET8

    capt ajit vadakayil
    ..

    ReplyDelete
  2. Capt. Ajit Vadakayil
    October 15, 2014 at 7:00 PM
    STOP PRESS:

    I AM WRITING THIS AS I PROMISED ONE OF MY READERS 45 MINUTES AGO-- HE RAN UP TO ME DURING MY MORNING WALK--

    HE WANTED TO KNOW OUT OF MY 300 PLUS SCOOPS IN MY NEARLY 845 ODD POSTS--WHICH IS NO 1 AND WHICH IS NUMBER 300.

    ############

    well let me make it clear , these 300 scoops are CONSTRUCTIVE SCOOPS .

    all these 300 scoops are in the plane of INVENTION and NOT innovation.

    none of these 300 scoops are DESTRUCTIVE -- so my posts proving that edison, newton, darwin, einstein etc are IDIOTS does not find a place in these scoops.

    so waht could be the no 1 scoop?

    it is about providing a HINT on how to make a astronaut hibernate while travelling to mars -to cut down on food and water .

    it is about keeping alive a seriously wounded soldier till he can find proper medical care.

    punch into Google search-
    HIBERNATION WITH HYDROGEN SULPHIDE GAS VADAKAYIL

    and

    FUMAROLES FOR FREE ENERGY AND HYDROGEN SULPHIDE SUICIDES IN JAPAN VADAKAYIL


    one of my russian chief engineers who lived near siberia , a place infested with HUGE bears had once woken up a bear while on hibernation in a cave ( as a child ) and he told be how furious the animal was. Before they go into months of hibernation they would kill a large animal ( bury the dead animal it in the ground ) and would NOT eat it unless it became putrid , reeking of rotten eggs..

    WELL WHAT WOULD BE NO 300 RANK.

    it is about PIN WORMS on as$hole.

    Check out the comment dated 18th Dec 2013 , about surcharging the anus with oxygen 5 times a day to prevent pinworms disrupting your REM sleep. This is a 6000 year old Ayurvedic cure for pinworm which happens when you eat non-veg heavy meats and do NOT wash your as$hole after a crap.
    Punch into Google search-
    VEDIC PRACTISES IN MECCA VADAKAYIL

    If I were a white JEW, I would have been an international celebrity. but then who cares?

    I have reached a stage where ONLY I can evaluate myself--

    one of my DUTCH bosses tried to patronise me nearly 2 decades ago -- he said he has given me a good confidential service report-

    so i told him something in Hindi -- with its translation.

    VADAKAYIL KHUD QUESTION PAPER SET KARTA HAI !

    VADAKAYIL KUD EXAM LIKTHA HAI !!

    VADAKAYIL KHUD NUMBER DETA HAI !!!

    capt ajit vadakayil sets his own exam question paper, he writes the exam , and then he gives himself the marks .

    THIS IS THE MEANING OF LIBERATION.

    believe me -- that man hugged me ( NO patronising here ) and said -- he expected such an frank retort from me .

    he said- every other captain would have said thank you .

    he was told to enter into this dialogue by the single man owner of that shipping company . this was about my " CUT THE CRAP " EMAILS -- where i would point out that the EMPEROR IS NAKED .

    99% of the people will NOT even understand the wisdom and gravity of the statement above.

    capt ajit vadakayil
    ..

    ReplyDelete