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MED2 > Basic hull and slip hull > Flashcards

Basic hull and slip hull Flashcards

1
Q

Any changes to a commercial vessel structure and under water hull that affects its watertight integrity or stability requires a record of work, and approval from whom ?

A

The surveyor

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2
Q

Aluminium will corrode quickly when in contact with copper based anti fouling paints.
A. True
B. False

A

A. True

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3
Q

Name 2 ways of classifying corrosion ?

A

Galvanic
Electrolysis

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4
Q

Name 6 equipment items that are checked during your out of water survey for a commercial vessel ?

A

Through hull fittings
Anodes
Seacocks
Hull integrity
Shaft alignment
Shaft bearings

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5
Q

What is the correct name of a slipping facility that operates on railways ?

A

Patent slip

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6
Q

Prior to dry docking what should the dock master be informed about , other than the plans and dimensions of the vessel ?

A

Ballast
Stability details
List
Trim
Loads

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7
Q

What is used to provide cathodic protections against corrosion ?

A

Sacrificial anodes

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8
Q

What will a copper fishing swivel left in the bilge of a aluminium hull result in ?

A

Corroding through the hull

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9
Q

When slipping name what conditions of stability should be taken into account ?

A

Fuel Full
Free surface
High centre of gravity

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10
Q

Prior to undocking ensure that the main engine seacocks are ?
Open or closed ?

A

Open

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11
Q

List 3 safety precautions to be observed in a dry dock ?

A

Safety inspection
Provide a safe gangway
No unauthorised entry

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12
Q

Entering a confined space without a permit is breaching what ?

A

Health and safety act
WHS legislation

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13
Q

List 3 issues that may need to be addressed prior to entering a confined space ?

A

Ventilation
Oxygen content
Gases
Lighting

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14
Q

You are required to inspect a fuel tank after slipping and prior to survey to check for structural deterioration or pollutant?
What must you be aware of ?

A

Fumes
Tank levels
Follow regulations

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15
Q

List 3 items you would look for when checking a vessels prop ?

A

Thin blade edges ?
Pitting in the blade ?
Warping or denting of the blade

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16
Q

List 2 ways to identify the deterioration of a steel vessel ?

A

Pitting of the steel
Paint blisters
Rust bleed marks

17
Q

Which procedure pertaining to saltwater lubricated stern tube stuffing boxes is usually observed when the ship is expected to be in port for an extended period ?

A

Stuffing box is tightened

18
Q

Explain how force is efficiently provided to vary the pitch of the blades on a modern controllable pitch prop ?

A

The force to move the props is transmitted through the hydraulics via the hydraulic pump.

19
Q

In a water cooled stern tube why is a slight leakage of water across the packing gland required ?

A

To lubricate and cool the shaft

20
Q

Name 3 types of slipping ?

A

Crane
Sling
Dry dock
Slipping

21
Q

How do you test and WTD water tight door ?

A

Chalk test

22
Q

What hazards could there be when conducting basic cleaning and maintenance ?

A

Chemical hazard
Fumes
Burns

23
Q

What procedures would you do before slipping ?

A

Organise surveyor parts etc.

24
Q

What inspections would be carried out when the vessel is on the slip way ?

A

Under water areas
Including
Props
Hull
Anodes
Rudder

25
Q

What would you do before putting the vessel back in the water ?

A

Ensure vessel is sea worthy

26
Q

Name the pollution control equipment used at a marina slipway ?

A

Catch drains to collect contaminated water run off.
Spill kits

27
Q

What PPCE could be required on the slip way ?

A

High vis vest
Hard hat
Steel caps

28
Q

Should anodes be painted before vessels enter the water ?
Yes or No

A

No

29
Q

Name some tools and equipment used in hull maintenance ?

A

Ladder
Paint roller
Sander
Tapping hammer

MED2 (8 decks)

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