Lighting Flashcards
Who’s permission is needed to turn on navigation lights?
OOW/OOD
When are navigation lights tested?
Daily, one hour before sunset.
Where are sunset times obtained if you cannot find daily orders?
OOW while at sea.
OOD while in harbour.
Where are nav lights turned on and off?
On at sunset and off at sunrise.
How are navigation lights controlled?
Operation of switches mounted on control panels. They are on the bridge or in the operations room.
What does NLCP mean?
Navigation lights control panel.
What VCS mean?
Versatile console system.
What is the VCS 428 and where is it located?
Located in the quatermasters console.
Allows switching for special operations lights and masthead obstruction lights.
What is VCS 161 and where is it located?
Located in the operations room.
Enables the masthead obstruction lights to be used as desired.
What are the three statutory navigation lights?
Side lights
Mast head steaming light
Stern light
Where are side lights and what colour are they?
PORT - red
STBD - green
Where are masthead steaming lights and what colour are they?
Fwd and aft
White lights
Where are stern lights and what colour are they?
White
Mounted on stern at deck level
What is done if the navigation lights fail?
Battery operated emergency lighting is used.
How are the emergency nav lights supplied?
Via fixed wiring by two series connected 12 v batteries.
What are special operation lights used for and how are they operated?
Used to indicate to other ships that special operating conditions are being conducted.
Operated by the VCS 428 unit.
What are the three types of special operation lights?
Not under command NUC
Replenishment at sea RAS
Man overboard MOB
What does NUC mean?
Not under command
What does MOB mean?
Man overboard
What does RAS mean?
Replenishment at sea
Where and what colour are the NUC lights?
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.
Where and what colour are the RAS lights?
2 steady red lights port
2 steady red lights stbd
2 single red lights each side between red lights
Vertically mounted on the mainmast
Where and what colour are the MOB lights?
2 flashing red lights port
2 flashing red lights stbd
Vertically mounted on the main mast
When are emergency special operation lights tested?
One hour before sunset.
Where are emergency special operations lights stowed?
In lockers normally on or near the signal deck.
What must be done before emergency special operations lights are hoisted up the mast and why?
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.
What are the two types of miscellaneous lights?
Anchor lights
Masthead obstruction lights
Where and what colour are anchor lights?
On top of fwd and aft jack staffs.
White in colour.
Where and what colour are masthead obstruction lights?
Mounted at the top of the main mast port and stbd.
Red in colour.
What is weather deck lighting used for?
To illuminate the upper deck for ceremonial and operational conditions.
What are they four main components of fluorescent lights?
Starter
Tube
Choke coil
Switched supply
What is a fluorescent lighting tube interior coated with?
Florescent phosphor
What is the florescent lighting tube filled with?
Low pressure argon gas
A small amount of mercury
What is the florescent lighting tube sealed with?
Sealed at each end with metal caps which house electrodes.
What is an AEL?
Automatic emergency light
What are the main components of a type 23 AEL?
Base casting PCB retaining clip Battery retaining clip Battery 2.4 v Terminal block
What is a PCB?
Printed circuit board
What are the components of a type 45 AEL?
Light operation PCB
Power source control
Connection for ships power
Battery cover
