Steamships and their storyChatterton, E. Keble (Edward Keble)
History
Steamships and their story
Chatterton, E. Keble (Edward Keble)
Shipbuilding; Steamboats
from the boiler and engines. This will be easily recognised in the
illustration. The other illustration facing page 246 shows a model
of the _Silverlip_, also with her engines placed well aft; but this,
with her derricks and her deck-houses, represents a larger and more
complex ship.
We come now to a type of steamship, which, by reason of its peculiar
construction, is deserving of more than ordinary consideration.
Opposite page 248 we give the latest example of this type--the s.s.
_Inland_. The “turret-ship,” as the class is called, is of quite
modern origin, and no one can come face to face with her without being
instantly struck with her unusual appearance. She owes her birth to
Messrs. William Doxford and Sons, Limited, of Sunderland, who are the
patentees and builders of this kind of ship. It is needless to say
that when this novel class of steamship first appeared in the early
’nineties there was aroused the usual prejudice; indeed, having in mind
what has been the experience of other inventors in connection with
our subject, the reader could hardly expect otherwise. Firstly, let
us consider her with regard to her appearance. It will be seen that
she differs from the usual cargo and passenger ship in that her sides
tumble right in above the water-line. This forms a kind of half turtle
deck, and is known as the harbour deck. But the upper deck of the
“turret-ship” is extremely narrow. (This will be seen more easily by
reference to the next illustration, which gives a model of the midship
section of such a ship.) The harbour deck need not be used except when
in port, but it can be employed for stowing long timbers or even iron
girders if required. Like the oil-tanker, many of the turret-ships have
their engines placed right aft, so that there is a long clear space
for stowing the cargo in the hold, an advantage which is especially
appreciated in the carrying of certain kinds of cargoes. Just as we saw
there was great danger to a ship in the possibility of oil washing
about the hull and shifting in a perilous manner, so also there is a
danger in such cargoes as rice and grain. With regard to the latter,
I remember the case of a big cargo ship which had the misfortune to
spring a leak and the water swelled the rice to such an extent that the
ship, strong as she was, burst her sides. But in the case of grain the
danger is not merely that, but also of shifting. As guarding against
this possibility the turret-ship, by reason of her special design, is
specially suitable, for any shifting that may take place in the turret
matters but little, and whatever shifting may take place in the hold
is compensated for by the turret; the cargo can be shot into the hold
without needing any trimming. The deck of the “turret” portion will
be seen from the illustration facing page 248 to form a navigating
platform.
[Illustration: SECTION OF MODERN OIL-TANK STEAMER.
_Photograph from a Model. By permission of Messrs. Sir W. G. Armstrong,
Whitworth & Co., Ltd._]
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