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The beginnings
The first original lightship could have
been a particular version of the Roman galley ships. These ships, rowed
by slaves, had a mast stump with an iron basket , in which possibly
a fire burned at night. These "lightships" were meant to deter pirates
and guide trading ships into the harbour.
But the actual development of lightship starts in the 15th century.
The Dutch had so called lightships positioned outside their harbours,
which only withdrew when the whole fishing fleet had returned home.
Note that this process was practised daily.
From the year 1683 we have similar information. From sun down to sunrise
a ship with a light would have been positioned in the Kattegat.
The existence of these ships, alas, is supported with few documents.
History begins
The first ship just for this purpose was called NORE and positioned
in 1731. It was a private ship anchored in the Thames estuary. And,
to pre-empt it, the history of manned light vessels ended on the 1st
of April 1994 with the withdrawal of the Belgium lightship from the
station WEST-HINDER.
For nearly 100 years only the British maintained lightvessels, until
the idea spread to the European mainland.
Moving to Station
The first light ships sailed to their positions.
Only later did they get towed to their positions by steam tugs. Now
most of them received sparse rigging or no sails at all. The first engines
were less for moving, but for preventing the ships drifting off station
in heavy seas and for relieving the tension on the anchor chains. Not
until the 20th century were ships equipped with strong engines, so they
can move under their own power.
Differences at night
In the middle of the 19th century the number
of lightships grew to such an extent that differences needed to be instated.
The highest number was reached at the beginning of the 20th century
when there were over 350 light ships world wide.
There were different characters under discussion. Possible variations
were: lamps or rings of lamps with fixed lights; on one, two or three
masts. For ships with one mast the lights were one on top of the other
and with some rigging even in a triangular formation.
The preferred light colour was white, its range was the best . Red or
green light therefore were rarely used.
After the invention of lights circling round the mast another choice
was the flashing light. The danger of mixing up different stations was
reduced considerably. The newer light vessels already had fixed lamps
which generated particular characteristics.
Hull Construction
The shape and construction of the hulls had to be different to usual
ships, due to the different stresses these ships had to withstand. Because
hulls had the tendencies to adapt to running seas and the wind often
came from amidships, designers were forced to invent new hull shapes.
The original light ships were especially stable sailing ships or pilot
cutters converted for this purpose. All had wooden hulls. In time country
specific ship types were developed, which were better adapted to the
task.
From the middle of the 19th century some iron light vessels were built.
But since this material was not reputed to be very durable, builders
returned to wooden hulls. From 1861 there was a middle way, composite
building. The shadows were made from iron and the planking from wood.
Only from 1870 ships were completely built from iron. Interesting to
note that is was Sweden and Finland who first used this material for
their light ships.
Hulls made from steel
Weser III built in 1888 started the iron
age finally. The ship was redesigned several times and served until
1977 on several stations. Most of the new builds from 1906 received
steam driven propulsion. From 1912 diesel engines with 300 to 500 horse
power with 9 knots. Several ships were built with this spec. Only after
WWII two further remarkable new ships were built. First the largest
light ship in the world "Elbe 1" with 1000t and second the light ship
"Borkumriff". The special thing about "Borkumriff" was that
the deck housings were made from light metal.
The actual size and shape of the ships
depended on the area in which they served and the advancements of technical
development. The largest and most stable ships were stationed at the
Elbe 1 and Nantucket (USA) stations. These stations were troubled by
particular formations of nature.
The light ship days are numbered
The light vessel "Borkumriff"
was the last manned light vessel in Germany to be withdrawn from her
station on the 15th of July 1988. This station too was now served by
an unmanned lightship (UFS). The development of UFS goes back to the
year 1901. In a German-Scottish co-operation a UFS by the name of Otter
Rock (station name) was developed. This ship was so successful that
for decades many examples were built. Here too different hull shapes
and forms were developed, depending on currents and wave conditions.
For the long ocean swells round types were preferred, for the steeper
harder North Sea swells only oval or hull shaped UFS were suitable.
So today world wide there are no light ships on the open seas. No men
who risk life and health for the good of shipping. They were all replaces
by UFS full of electronics serving off the coasts.
A word to finish
The record for durability belongs to the
Danish copper clad ships of over 100 years of age. Future generations
will see how durable the metal and electronics of UFS turns out.
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