Aux 2 Unit 15 Bulkheads Flashcards

What type of fitting is typically used to secure a pipe passing through a watertight bulkhead?

B) A stuffing box or pipe collar with a watertight seal

What is the main function of a watertight electric cable gland?

B) To provide a watertight seal for cables passing through bulkheads

What is a common operational feature of watertight doors on the weather deck?

B) They can be both manually and hydraulically operated

Which class of bulkhead is considered to offer the highest level of fire protection?

C) A-class

What is the main characteristic of an A-class bulkhead?

B) Constructed of non-combustible material and capable of preventing the passage of fire and smoke for 60 minutes

Why is the collision bulkhead not permitted to have doors or large openings?

B) To maintain its watertight integrity and prevent water ingress

Where should a watertight electric cable gland be positioned?

C) Through designated entry points to maintain watertight integrity

What is the first step when installing a cable through a watertight bulkhead using a cable gland?

C) Positioning the gland and ensuring the seal is in place

What type of insulation is typically used for A-class bulkheads to enhance fire resistance?

C) Fire-resistant insulation

What is the primary purpose of securing a pipe passing through a watertight bulkhead?

B) To ensure watertight integrity and prevent water ingress

Where are watertight doors commonly placed on a vessel?

B) At strategic points on the weather deck and between compartments

Watertight doors on the weather deck must comply with which type of regulations?

B) International safety and maritime regulations (e.g., SOLAS)

What is a key component of a watertight electric cable gland that ensures sealing?

B) A rubber compression ring or seal

Which of the following helps to maintain the watertight seal in case of vibration or movement?

B) An anti-vibration locknut

Why is regular inspection and maintenance of watertight doors necessary?

B) To ensure the rubber gaskets remain flexible and the sealing mechanism functions properly

What type of material is most commonly used for constructing watertight doors on the weather deck?

B) Steel or high-strength aluminum alloy

What is the primary purpose of watertight doors on the weather deck?

C) To prevent water ingress and maintain the vessel's watertight integrity during rough sea conditions

Which feature is essential for the safe operation of watertight doors in emergencies?

B) An audible alarm system and warning lights

What mechanism is used to ensure a watertight seal on these doors?

B) A rubber gasket combined with a compression handle

What material is commonly used for the main body of a watertight cable gland?

B) Brass or stainless steel

What is the primary purpose of a cable gland when passing a cable through a watertight bulkhead?

B) To ensure a watertight seal and maintain bulkhead integrity

What is the regulation regarding the height of the collision bulkhead?

B) It should extend to at least the bulkhead deck

What feature ensures that a cable gland maintains a seal in high-pressure situations?

B) A high-pressure rated compression ring

What type of material is generally used for the main body of a watertight cable gland?

B) Brass or stainless steel

What mechanism in a cable gland ensures that the seal around the cable remains tight?

B) A tightening nut or cap

Which of the following is a key component of a watertight cable gland?

A) A rubber compression ring

Which of the following is true about B-class bulkheads?

B) They are made of non-combustible material and prevent the passage of flame for 30 minutes

How should the pipe be positioned when passing through a watertight bulkhead?

 

B) Rigidly secured and perpendicular to the bulkhead

What is the purpose of the external locknut in a watertight cable gland assembly?

B) To secure the gland firmly to the bulkhead and ensure stability

Why are watertight doors typically reinforced with crossbars or ribs?

B) To increase their strength and ability to withstand pressure from water

What is a defining feature of C-class bulkheads?

B) Non-combustible construction with no fire rating

Which material is often used to create a watertight seal for a pipe passing through a bulkhead?

B) Rubber or synthetic gaskets

What is the primary purpose of the collision bulkhead on a vessel?

B) To prevent flooding of the entire ship in the event of a collision

What additional feature may be used to prevent vibration and movement of a pipe passing through a watertight bulkhead?

B) Vibration dampeners or clamps

What is a common feature that allows a cable gland to maintain pressure on the cable and seal?

B) A tightening nut or cap

What feature of watertight doors ensures that they can be opened manually during a power failure?

B) A manual handwheel or lever

According to regulations, where is the collision bulkhead positioned on a vessel?

C) At a specified distance from the forward perpendicular, typically 5-8% of the ship’s length
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