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Power & Distribution > Lighting > Flashcards

Lighting Flashcards

1
Q

Who’s permission is needed to turn on navigation lights?

A

OOW/OOD

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2
Q

When are navigation lights tested?

A

Daily, one hour before sunset.

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3
Q

Where are sunset times obtained if you cannot find daily orders?

A

OOW while at sea.

OOD while in harbour.

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4
Q

Where are nav lights turned on and off?

A

On at sunset and off at sunrise.

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5
Q

How are navigation lights controlled?

A

Operation of switches mounted on control panels. They are on the bridge or in the operations room.

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6
Q

What does NLCP mean?

A

Navigation lights control panel.

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7
Q

What VCS mean?

A

Versatile console system.

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8
Q

What is the VCS 428 and where is it located?

A

Located in the quatermasters console.

Allows switching for special operations lights and masthead obstruction lights.

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9
Q

What is VCS 161 and where is it located?

A

Located in the operations room.

Enables the masthead obstruction lights to be used as desired.

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10
Q

What are the three statutory navigation lights?

A

Side lights
Mast head steaming light
Stern light

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11
Q

Where are side lights and what colour are they?

A

PORT - red

STBD - green

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12
Q

Where are masthead steaming lights and what colour are they?

A

Fwd and aft

White lights

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13
Q

Where are stern lights and what colour are they?

A

White

Mounted on stern at deck level

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14
Q

What is done if the navigation lights fail?

A

Battery operated emergency lighting is used.

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15
Q

How are the emergency nav lights supplied?

A

Via fixed wiring by two series connected 12 v batteries.

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16
Q

What are special operation lights used for and how are they operated?

A

Used to indicate to other ships that special operating conditions are being conducted.
Operated by the VCS 428 unit.

17
Q

What are the three types of special operation lights?

A

Not under command NUC
Replenishment at sea RAS
Man overboard MOB

18
Q

What does NUC mean?

A

Not under command

19
Q

What does MOB mean?

A

Man overboard

20
Q

What does RAS mean?

A

Replenishment at sea

21
Q

Where and what colour are the NUC lights?

A 
2 port 
2 stbd
Steady red lights 
Vertically mounted on the main mast 
Fwd and aft masthead lights will be off when NUC lights are on.
22
Q

Where and what colour are the RAS lights?

A

2 steady red lights port
2 steady red lights stbd
2 single red lights each side between red lights
Vertically mounted on the mainmast

23
Q

Where and what colour are the MOB lights?

A

2 flashing red lights port
2 flashing red lights stbd
Vertically mounted on the main mast

24
Q

When are emergency special operation lights tested?

A

One hour before sunset.

25
Q

Where are emergency special operations lights stowed?

A

In lockers normally on or near the signal deck.

26
Q

What must be done before emergency special operations lights are hoisted up the mast and why?

A

The lights must be plugged in and turned on before being hoisted. This is because an induced current may be present due to radar and radio interference.

27
Q

What are the two types of miscellaneous lights?

A

Anchor lights

Masthead obstruction lights

28
Q

Where and what colour are anchor lights?

A

On top of fwd and aft jack staffs.

White in colour.

29
Q

Where and what colour are masthead obstruction lights?

A

Mounted at the top of the main mast port and stbd.

Red in colour.

30
Q

What is weather deck lighting used for?

A

To illuminate the upper deck for ceremonial and operational conditions.

31
Q

What are they four main components of fluorescent lights?

A

Starter
Tube
Choke coil
Switched supply

32
Q

What is a fluorescent lighting tube interior coated with?

A

Florescent phosphor

33
Q

What is the florescent lighting tube filled with?

A

Low pressure argon gas

A small amount of mercury

34
Q

What is the florescent lighting tube sealed with?

A

Sealed at each end with metal caps which house electrodes.

35
Q

What is an AEL?

A

Automatic emergency light

36
Q

What are the main components of a type 23 AEL?

A 
Base casting
PCB retaining clip
Battery retaining clip
Battery 2.4 v
Terminal block
37
Q

What is a PCB?

A

Printed circuit board

38
Q

What are the components of a type 45 AEL?

A

Light operation PCB
Power source control
Connection for ships power
Battery cover

Power & Distribution (5 decks)

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