NSCC SEAMAN MODULE TWO NAVIGATIONALSIGNAL LIGHTS

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NSCC SEAMAN MODULE TWONAVIGATIONAL/SIGNAL LIGHTS

• By ENS MATTHEW LANDRY, NSCC
• USS JOSEPH P KENNEDY, JR (DD 850) DIVISION

FOR USE WITH CHAPTER 2, PAGES 2-10 TO 2-15 OF
NAVEDTRA 14067
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Enabling Objectives

• Navigational lights must conform to Navigation
  Rules, International-Inland, COMDTINST M16672.2B
• Lights consist of
• Running Lights
• Signal Lights
• Anchor Lights

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Navigational LightsPower-driven vessel, 50
meters
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Running Lights

• Similar to merchant ships
• Include
• Masthead light
• Second masthead light (range light)
• Port/starboard side lights
• Stern light (white)

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Masthead light

• White light
• Located on foremast or forward
• 6-12 meters off deck
• Shows 225 of light
• Right ahead to 22.5 abaft the beam on each side

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Second Masthead Light

• Also a 225 light
• Mounted on mainmast
• At least 4.5 meters higher than masthead light

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Stern Light

• 135 white light
• Located on vessel stem
• Visible from dead astern to 67.5 on each side of
  ship

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Supply, Control and Telltale Panel

• Mounted on the bulkhead in the pilothouse
• Audible and visual signal when light burns out
• Automatically switches to secondary filament, so
  bulb keeps lit
• Master control switch for running lights

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Signal Lights

• Installed on combat ships
• Include
• Aircraft Warning lights (red)
• Blinker lights (white)
• Breakdown and man-overboard lights (red)
• Steering light (white)
• Stem light (blue)
• Wake light (white)
• Speed light (combination red/white)
• Supply switches are located in the pilothouse