week 3

Question 1

A protruding bulb at the front of a ship below the waterline that reduces water resistance, improving fuel efficiency and speed.

Answer 1

Bulbous Bow

Question 2

The forward part of the ship’s hull that cuts through the water, designed to minimize resistance and improve stability.

Answer 2

Bow

Question 3

The vertical or slightly inclined upright at the very front of the ship’s bow, connecting the keel to the bow, providing structural strength.

Answer 3

Stem

Question 4

A raised deck at the front of the ship, typically housing crew accommodations and storage for equipment such as anchors and mooring lines.

Answer 4

Forecastle

Question 5

The forward part of the main deck, located near the bow, often used for handling anchors, mooring operations, and access to the forecastle

Answer 5

Foredeck

Question 6

The front mast on a ship, usually located near the bow, supporting sails (on a sailing ship), antennas, and navigational equipment.

Answer 6

Foremast

Question 7

A watertight cover used to close the openings of cargo holds on a ship, protecting the cargo from weather and seawater.

Answer 7

Hatch Cover

Question 8

A mechanical device used on ships to lift, lower, and move heavy cargoes, facilitating loading and unloading operations.

Answer 8

Crane

Question 9

The large enclosed space within a ship used for storing cargo during transport.

Answer 9

Cargo Hold

Question 10

The horizontal surface covering a ship’s hull, providing structural support and space for cargo, equipment, and crew activities.

Answer 10

Deck

Question 11

The watertight outer structure of a ship that provides buoyancy and stability, protecting the interior from the sea.

Answer 11

Hull

Question 12

A heavy device lowered from a ship to the seabed, used to secure the vessel in a fixed position by gripping the sea floor.

Answer 12

Anchor

Question 13

The living quarters on a ship, including cabins, mess rooms, and recreational areas where crew members live and work.

Answer 13

Accommodation

Question 14

The part of the ship above the main deck, including the bridge, accommodations, and other structures that house operational and living spaces.

Answer 14

Superstructure

Question 15

The compartment where the ship’s main engines, generators, and machinery are located, responsible for propulsion and power generation.

Answer 15

Engine Room

Question 16

The backbone of the ship, running along the bottom of the hull from bow to stern, providing structural integrity and stability.

Answer 16

Keel

Question 17

A rotating blade mechanism that propels the ship through the water by converting engine power into thrust.

Answer 17

Propeller

Question 18

A flat, movable piece at the stern used to steer the ship by directing water flow when turned.

Answer 18

Rudder

Question 19

The rear part of the ship, opposite the bow, housing the rudder and often the propeller.

Answer 19

Stern

Question 20

The highest deck at the stern, typically above the main deck, used for observation and sometimes housing navigational equipment.

Answer 20

Poop Deck

Question 21

A small, sturdy boat carried on a ship, used for emergency evacuations to save lives in case of disaster.

Answer 21

Lifeboat

Question 22

The deck area surrounding or supporting the ship’s funnel, often used for access to the funnel.

Answer 22

Funnel Deck

Question 23

The chimney-like structure that vents smoke and exhaust gases from the ship’s engines and boilers to the outside air.

Answer 23

Funnel

Question 24

The tallest mast on a ship, supporting sails, antennas, and navigational lights, often used for signaling and communication.

Answer 24

Main Mast

Question 25

A small platform located above the bridge or wheelhouse, often used as an observation deck or for navigational purposes.

Answer 25

Monkey Island

Question 26

The command center of the ship where navigation, steering, and control operations are managed by the officers on duty.

Answer 26

Bridge

Question 27

The open extensions of the bridge on either side, providing a clear view for maneuvering and docking operations, often used for navigating in confined spaces.

Answer 27

Bridge Wings

Question 28

is the primary material used in shipbuilding due to its excellent properties, including high strength, toughness, durability, and weldability.
The types of steel used in shipbuilding are selected based on the specific requirements of different parts of the ship, such as the hull, deck, superstructure, and machinery spaces

Answer 28

Steel

Question 29

A stands for Standard Structural Grade (36 minimum yield strength of steel)

Application:
This grade is used in general structural applications where high toughness is not a primary requirement. It is typically used above the waterline, where the material is less exposed to harsh conditions.

Answer 29

A36

Question 30

AH stands for High-Strength Steel with a certain level of toughness.

Application:
The “A” prefix indicates that it is suitable for use in shipbuilding, and the “H” stands for High strength. AH grade steel is used in parts of the ship that are exposed to low temperatures or higher stress, like the hull, where higher strength and toughness are required.

Answer 30

AH36

Question 31

DH stands for Higher Strength Steel with enhanced toughness at lower temperatures.

Application:
The “D” represents that the steel has better toughness properties than AH grade and is suitable for use in harsher, colder environments, including below the waterline. DH steel is often used in the ship’s hull and other critical areas.

Answer 31

DH36

Question 32

EH stands for Extra High Strength Steel with the highest level of toughness.

Application:
The “E” prefix indicates that the steel is suitable for even more demanding applications, especially in very cold or harsh environments. EH steel is used in critical structural parts of the ship that experience high stress and exposure to low temperatures, such as in icebreakers or vessels operating in Arctic conditions.

Answer 32

EH36

Question 33

Standard structural grade for general use

Answer 33

A36

Question 34

High strength steel suitable for above and below waterline with good toughness.

Answer 34

AH36

Question 35

Higher toughness and suitable for colder conditions, often below the waterline.

Answer 35

DH36

Question 36

Extra high toughness for extremely cold or high-stress conditions.

Answer 36

EH36

Question 37

Mild steel is the most commonly used steel in shipbuilding due to its balance of strength, ductility, and cost-effectiveness.
Commonly used for general structural purposes

Example: Grades like A36 and AH36 are commonly used

Answer 37

Mild Steel (Carbon Steel)

Question 38

HSLA steel offers greater strength-to-weight ratios compared to mild steel, allowing for lighter, more efficient ship designs without compromising strength.
Provide enhanced strength and toughness for critical ship structures such hull and decks
Examples include DH36 and EH36 grades.

Answer 38

High-Strength Low-Alloy (HSLA) Steel

Question 39

Stainless steel is highly resistant to corrosion, making it ideal for use inspecialized components such as tanks, piping, and fittings, particularly in chemical tankers and other vessels where corrosion resistance is critical.
It’s often used in conjunction with other steels to enhance the longevity of certain components.

Answer 39

Stainless Steel

Question 40

Steel with improved resistance to atmospheric corrosion, often used in areas exposed to corrosive environments, such as the deck and superstructure.

CORTEN Steel are used in environments prone to corrosion.

Answer 40

Corrosion-Resistant Steel (CORTEN Steel)

Question 41

Used in demanding environments, such as offshore platforms and ships that operate in harsh conditions.
Offer superior corrosion resistance and are used in specialized components.

Answer 41

Duplex Stainless Steel