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mmd question papers MET MEP MEK SSEP SCS






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3 comments:

Anonymous said...

THE SURVEYING PROCESS
• understand the basis of warranty surveying dubai;
• appreciate the wide range of knowledge needed.
Surveying involves a close inspection of as much of a vessel as is accessible. This detailed technical
examination is usually followed by a written report which lists the extent and nature of the defects found.
A surveyor has been described as a doctor whose patients are ships, not people. However, a doctor has
the great advantage that he can talk to his patient about ailments and symptoms. It might be tempting
to describe a small craft cargo surveyor dubai as more akin to a vet. But these people have one great advantage over
a surveyor in that they can gently press and prod till the patient flinches. Then at least the general area
of the malady has been established. A vessel inspection surveyor does not have this advantage.
So a ship surveyor dubaihas to look for visible and audible abnormalities. He searches for distortion,
discolouration and corrosion, also uneven surfaces where there should be smoothness, signs of
weakness, changes of tone when percussion is applied, and gaps where there should be none. To detect
what is not right, the cargo recovery inspection surveyor has to have a wide knowledge of what is correct. This can best be gained
by extensive study of well-built craft, by taking part in their building, altering and repair processes, and by
time at sea in small craft. It is not enough just to be on board in harbour, many important experiences
come in bad weather offshore.
Because even quite small boats have a wide range of parts, services and ancillaries, a surveyor needs a
spectrum of knowledge. This mental experience, which can be first or second hand, has to cover such
subjects as structures, materials, basic engineering, metallurgy, fibreglass and plastics, timber
technology, piping, plumbing, electricity, rope-making, upholstery, insurance, as well as ship and boatbuilding,
fastenings, launching techniques, and so on.
THE NATURE OF STEEL

realise why steel is used for certain types of small craft;
• appreciate the limitations of the material.
So far as small steel craft are concerned, steel is strong, heavy, widely available, seldom expensive, fairly
easy to work and repair, reliable, well researched and unrivalled for certain types of vessel. Steel suits
small craft which have to stand up to hard usage such as work-boats, fishing vessels, long range cruising
yachts, and vessels which have to take the ground often. Because of its weight steel is seldom suitable
for racing craft, or vessels which have to be fast. It can be unsatisfactory for vessels which have to be
moved easily and frequently by road because of lifting problems, however, steel craft stand up particularly
well to the rough and tumble of road transport. It is normal good practice for steel delivered from a
reliable supplier to a shipbuilder to have certification indicating the specification, quality and strength of
the material. On a few well-organised small vessels these certificates are in the ship's files so that a
surveyor may be able to refer to them in his report.
Typical minimal ship-building steel properties are:-
Yield stress 240 N/mm2
Tensile strength 410 N/mm2
Elongation 22%
Steel is

Anonymous said...

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Anonymous said...

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