finals

Question 1

is the gradual deterioration of materials, usually metals, due to chemical, electrochemical, or environmental interactions.

Answer 1

Corrosion

Question 2

The main causes of corrosion include:

Answer 2

1. Electrochemical Reaction
2. Chemical Exposure
   3 Galvanic Corrosion
3. Mechanical Stress
4. Poor Maintenance

Question 3

When metal is exposed to water and oxygen, an blank occurs.

Answer 3

Electrochemical Reaction:

Question 4

Contact with acids, alkalis, or industrial chemicals on board can lead to blank

Answer 4

Chemical Exposure:

Question 5

Occurs when two different metals are in electrical contact in a conductive environment (e.g., seawater)

Answer 5

Galvanic Corrosion

Question 6

Stress corrosion cracking occurs when mechanical stresses combine with a corrosive environment.

Answer 6

mechanical stress

Question 7

Lack of proper cleaning, coating, and lubrication can leave surfaces exposed to corrosive elements

Answer 7

Poor maintenance

Question 8

methods of corrosion prevention

Answer 8

1.protective coatings
2.cathodic protection
3.corrosion resistant materials
4.chemical inhibitors
5.regular maintenance

Question 9

surface preparation techniques

Answer 9

1. de rusting
   2.cleaning
   3.surface profiling
2. inspection

Question 10

is a critical maintenance practice used to protect ship structures and equipment from corrosion, weathering, and other environmental effects.

Answer 10

painting

Question 11

componets of paint

Answer 11

1. pigments
2. binders
3. solvents
4. additives

Question 12

components of paint
* Provide color and opacity. Some pigments, like zinc oxide, offer additional protective properties.

Answer 12

Pigments

Question 13

componets of paint
* Bind pigments together and help the paint adhere to the surface.
Examples include epoxy and alkyd resins.

Answer 13

binders

Question 14

componets of paints
* Adjust the paint’s viscosity for easier application. Evaporate during drying, leaving the paint film on the surface.

Answer 14

solvents

Question 15

components of paint
* Enhance specific properties, such as UV resistance, durability, or drying time

Answer 15

additives

Question 16

Base-coat applied to bare metal for corrosion resistance and paint adhesion.

Answer 16

primer

Question 17

Durable and resistant to water, chemicals, and abrasion.

Answer 17

epoxy paint

Question 18

Applied on the underwater hull to prevent marine growth like algae and barnacles.

Answer 18

Anti fouling paint

Question 19

Used for areas exposed to high temperatures, such as exhaust pipes.

Answer 19

Heat-Resistant Paint•

Question 20

methods of application

Answer 20

*brush
*roller
*spray

Question 21

It is a specialized piece of equipment used for working at height on a ship, particularly for tasks such as painting, maintenance, or inspection of the ship’s sides, rigging, or other hard-to-reach areas

Answer 21

Bosun’s chair