Saturday, 17 September 2016

STRUCK A ROCK?


Queensland Times, Friday 31 March, 1911.

YONGALA DISASTER.

No News of Passengers.
Further Wreckage Picked Up.
Energetic Search Continues.
The question as to how the steamer
met her fate is now evoking considerable 
discussion (says the "Telegraph"). 
Shipmasters are generally agreed 
that the steamer must have
struck a reef or rock, but one or
two authorities still tenaciously
cling to the belief that she was
overturned by the cyclonic 
conditions with which she was 
surrounded on the awful night of 
her disappearance.

In support of this theory, it is
pointed out that in the event of
the steamer having struck a rock
she would most likely have had her
side or bottom ripped out, thus
liberating large quantities of her
cargo. Had she run on a reef she
would have remained there, like all
other known examples of this kind.

The fact that no bodies or deck fittings 
have been discovered, is taken
as a further proof of the suddenness 
of the vessel's disappearance,
such as would have happened
through her being overwhelmed by the
awful velocity of the wind, and the
untold tumultuousness of the water.

In opposition to the theory that
the vessel was overturned, it is stated
that she was for a number of years
employed in the company's Sydney
to Fremantle service, in the course
of which time she frequently weathered 
numberless storms in the Great Australian 
Bight, off the much dreaded Leeuwin, and 
other parts of the coast, coming through
the ordeal triumphantly. Indeed Mr.
Harris, who now holds an important 
official position at Adelaide,
and who for some years was chief
engineer of the Grantala, and who
also had some experience of the
Yongala, has stated that he never had
known a better sea boat than the
latter ship. On the outward run between 
Sydney and the West Australian terminal 
port the coastal steamers usually are well 
laden; but on the return voyage frequently
their cargo does not exceed 100 tons in
weight.

On her last fatal trip, however,
the steamer was carrying 2000 tons
of cargo, ballast, and bunker coal.
The only deck cargo she carried, as
previously stated, was a racehorse, a
stud bull, and 5 tons of kerosene.

The steamer was well protected
against the possibility of shipwreck
by ordinary means, having a double
bottom, which ran practically from
stem to stern, with the exception 
of that portion lying under the 
engine room. In addition to this, 
she was provided with water ballast tanks,
which covered practically the same
area. These tanks were strongly
constructed, the ship having been built
by the famous firm of Armstrong,
Whitworth, and Co., the inner side
of them being some 4ft off the
bottom and sides of the ship.
Provided, therefore, the ship had her
true and false bottom both ripped
out by grazing a reef or rock, there
still would be the water tanks between 
her holds and the sea.

The only rock of any significance which Yongala could have struck was Nares rock, which as I have pointed out in previous posts, would not have equated with the distribution of wreckage found along the Queensland coast. The mere fact that much of the cargo discovered came from the lower hold does suggest that Yongala's side was ripped out. However, this is not the only way in which cargo can be liberated - main hatches failing due to the intensity of the forces causing the vessel to founder. 


It is interesting to note that the double bottom did not include the area directly beneath the engine room which suggests a weak link in protection provided to the steamer. If such a modality is to provide protection, surely it stands to reason that it should be universal and not selective along the length of the hull?



Although the Inquiry suggested only 1 ton of cargo on deck, this report suggests as much as 5 tons of kerosene which could have become dislodged during the cyclone - as had happened previously in another gale - destabilising the Yongala and contributing to her turning over. What the reporter failed to mention is that when Yongala plied the West Australia route she had 150 tons of pig iron to stabilise her. This was taken out long before Yongala sailed into the cyclone, March 23, 1911.



The fact that Yongala only carried just over 600 tons of cargo, made her vulnerable from a GM point of view to the forces exerted by a cyclone. From commentary thus far it does start to emerge that there were marine observers who were concerned that the Yongala had turned over in the storm. This would have had serious implications reverting back to the design of Yongala and Grantala and a degree of responsibility for the accident carried by the owners.



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