Many of you know, how a Car is driven – the vehicle gets power as in the engine, petrol / diesel is burnt with oxygen in metal cylinders, there is gear box and more! – in boats there would be propeller. May have seen in Movie chasing scenes – boat would be steered by simply tilting the motor casing of motor, the propeller would push the water away from it at an angle !
Descartes
is a commune in the Indre-et-Loire department in central France, on
the banks of the Creuse River. Gustave Pierre Trouvé was
born here in 1839 ! – what is the relevance of this, as also the above photo !!
A
ship or a boat is a contraption that can float and move on the ocean, a
river, or any waterbody, either through its own power or using power from the
elements (wind, waves, or Sun). Plain steel would sink in water immediately, as
would a wrecked steel ship !
The reason that a ship
floats is that it displaces a lot of water. The displaced water keeps pushing
the ship upwards – this force is called the buoyancy force. The more
water that is displaced, the stronger the buoyancy force is which pushes the
object up. Any object dipped into water experiences two forces: the
gravity force which pulls it down due to its weight, and the buoyancy force
which pushes it up. If these forces are equal, then the object
floats. This is about the divine float – the Theppam for Lord Sriman
Narayana
ஸ்ரீராமனின் காதை "இராமாயணம்"
ஒரு அற்புத காவியம். கம்ப நாட்டாழ்வான் - கங்கைகாண்
படலத்திலே - ஸ்ரீராமனுக்காக, குகன் கொணர்ந்த நாவாய்களின் அழகை இவ்வாறு விவரிக்கிறார்.:
நங்கையர் நடையின் அன்னம்
நாண் உறு செலவின் நாவாய்,
கங்கையும் இடம் இலாமை
மிடைந்தன-கலந்த எங்கும்,-
அங்கொடு, இங்கு, இழித்தி
ஏற்றும் அமைதியின், அமரர் வையத்து
இங்கொடு அங்கு இழித்தி
ஏற்றும் இருவினை என்னல் ஆன.. .....
பெண்கள் நடைபோன்ற நடையையும்;
அன்னப் பறவைகள் நாணப்படும்படியான நீரிற்
செல்லுதலும் உடைய, நாவாய்; அக்கரையில் உள்ளாரை இக்கரையில்
ஏற்றி இறக்கும்தன்மையினால்; தேவருலகமாகிய அவ்வுலகத்தோடு; இவ்வுலகில் உள்ளாரை
ஏற்றிச்செல்லும் புண்ணியம் பெற்றவையாக, பெருங்கடல் போன்ற புண்ணிய கங்கை நதியிலும் கூட
இடமில்லையோ எனும்படி எல்லா இடங்களிலும் நிறைந்து இருந்தனவாம்.
In the divyadesam of Thiruvallikkeni, the tamil month of Masi
has special significance. On the Full moon [Pournami day and Magam
Nakshathiram] Sri Parthasarathi Swami visits the shores of Marina, famously
known as Masi Magam On Masi New moon [Amavasyai] starts the float
festival at Thiruvallikkeni. The tank of Sri Parthasarathi Swami is
famous ~ it is ‘Kairavini Pushkarini’… the pond
of Lily – ‘allikkeni’ from which the place itself derives its name (~ and
my blog is titled Kairavini Karaiyinile literally meaning
on the banks of holy Kairavini, the temple tank).
Every year there is ‘theppam’ – the float
festival. A floating structure gets spruced up, made of drums, timber
and ornated beautifully. Perumal comes to the temple tank in purappadu
and is placed majestically inside the float. The beautifully lit
theppam is dragged around in water, pulled by devotees by ropes ! . .. .. Devotees
in hundreds converge, sit everywhere on the steps of the temple tank to have
darshan of the Lord on theppam. In olden days, the shops springing up for the
occasion were of added attraction. (the
underlined one about ropes and pulling had been happening year after year – not
this year !)
The annual float festival of the Sri Parthasarathy Swamy temple
starts every year on Masi Ammavasai day and is a 7 day affair. This year
the Theppa Utsavam began on 3.3.2022 and today is day 2 of the
Theppothsavam. Ydya, today and tomorrow are for Sri
Parthasarathi Perumal – then a day each for Sri Azhagiya Singar, Sri
Ranganathar, Sri Ramapiran & Sri Gajendra Varadhar.
Have
been enjoying theppam for at least 4 decades .. .. this year, copious water
presented a newer challenge. With water remaining over the sand
portion, structures and some trees, the depth is uneven and theppam cannot be
properly operated and cannot be pulled as the steps on which devotees would
walk pulling the theppam are under water. This year
uniquely and for the first time, theppam is run by powerful outboard engine ! –
there were floating buoys too doubling
as markers !
Until
engines were invented, the only way to power a small boat was with oars or
sails. It took ages to move way from wind or muscle power. Outboard motors
changed all that. Invented in the early years of the 20th century, outboards
brought the same freedom to small boats that gasoline engines brought to cars.
Marine
propulsion is the mechanism or system used to generate thrust to move a ship or
boat across water. While paddles and sails are still used on some smaller
boats, most modern ships are propelled by mechanical systems consisting of an
electric motor or engine turning a propeller, or less frequently, in pump-jets,
an impeller. The first advanced mechanical means of marine
propulsion was the marine steam engine, introduced in the early 19th century.
During the 20th century it was replaced by two-stroke or four-stroke diesel
engines, outboard motors, and gas turbine engines on faster ships. Marine
nuclear reactors, which appeared in the 1950s, produce steam to propel warships
and icebreakers; commercial application, attempted late that decade, failed to
catch on. Electric motors using electric battery storage have been used for
propulsion on submarines and electric boats and have been proposed for
energy-efficient propulsion.
The
first known outboard motor was a small 5 kilogram electric unit designed around
1870 by Gustave Trouvé, and patented in May 1880. The one seen here is
Yamaha brand Outboard motor. Outboard motors are propulsion systems
that have a self-contained unit that includes engine, gearbox and
propeller or jet drive, designed to be affixed to the outside of the
transom. As well as providing propulsion, outboards provide
steering control, as they are designed to pivot over their mountings and thus
control the direction of thrust. The skeg also acts as a rudder when the engine
is not running. Unlike inboard motors, outboard motors can be easily removed
for storage or repairs. In order to eliminate the chances of hitting bottom
with an outboard motor, the motor can be tilted up to an elevated position
either electronically or manually.
Interesting .. .. Here are
some photos of theppam on day 2 & purappadu.
adiyen Srinivasadhasan.
Mamandur Veeravalli Srinivasan Sampathkumar
3rd Mar 2022.
Amazing ❤️ Thanks for the wonderful article and mesmerizing photographs. Science and spirituality!!!
ReplyDeleteThank you so much Sai 💐
ReplyDelete