Steam-ships : $b The story of their development to the present dayFletcher, R. A.
History
Steam-ships : $b The story of their development to the present day
Fletcher, R. A.
Shipbuilding; Steamboats
About four years ago the ice-breaking and surveying steamer _Lady Grey_
was launched by Messrs. Vickers, Sons, and Maxim at Barrow-in-Furness
for the Canadian Government, and performed some exceedingly effective
work, particularly in the St. Lawrence River or in duties associated
with the Marine and Fisheries Board. A larger and faster vessel being
required, the builders were asked to provide a steamer which, while
preserving all the qualities of an ice-breaker, should yet be able to
attain a speed of seventeen knots, and be capable of use for a variety
of purposes. The _Earl Grey_ was launched in June 1909, and besides
fulfilling these requirements has been engaged in the passenger traffic
across the Northumberland Straits. She has been fitted with special
quarters, enabling her to be employed as an official yacht by the
Governor-General. Provided with a cut-water or schooner stem with a
short bowsprit, an elliptical stern, and two steel pole schooner-rigged
masts, which rake considerably, and having been designed with a
graceful sheer, she has more of the appearance of a large yacht than
an ice-breaker intended to be able to make her passages in all sorts
of weather and under widely varying conditions. The hull is built with
extraordinary strength; the frames are very closely spaced in order to
take up the thrust of the pack ice which in winter may sometimes be
piled round the vessel; the shell plating is of unusual thickness, and
the outer skin is double right fore and aft along the water-line and to
the bottom of the keel in the fore body, where the friction of the ice
tends in the case of ice-breaking steamers to wear away the material.
The ordinary practice of this and all other ice-breakers, in whatever
part of the world, is to utilise their weight to break the ice by
rising upon it and crushing it. In order to possess as great a weight
as possible, large tanks are built into the fore part of the _Earl
Grey_ which can be filled or emptied at a rate of 250 tons an hour.
The vessel is also equipped for breaking ice when going astern, the
counter having been suitably strengthened to resist the shocks; while
to secure the rudder from injury it has been built into the form of the
ship so that her movements are not impeded by the ice-floes. The _Earl
Grey_ is 250 feet in length, 47 feet 6 inches beam, 17 feet 7 inches
depth, and 3400 tons displacement. She has accommodation for fifty
first-class passengers and twenty in the second class, and under
these circumstances winter ice-breaking excursions may yet become the
vogue among those in search of a new sensation.
[Illustration: THE “ERMACK.”]
[Illustration: THE “EARL GREY.”]
Public-domain text, read in full here on John Shaqi.
Reviews
Reviews
No reviews yet
Be the first to share your thoughts on this work.
Elsewhere in the archive
Join the Discussion
Join the discussion
Sign in to leave a comment or review.
Sign InorCreate an account