Running Lights
Port ~ Red 112.5°
Starboard ~ Green 112.5°
Masthead ~ White 225°
Stern ~ White 135°

Towing Lights
Upper Fwd Tow (Used w/ Masthead for towing <200m) ~ White 225°
Lower Fwd Tow (Used w/ Upper Fwd Tow & Masthead for towing >200m) ~ White 225°
Upper Aft Tow ~ Amber 135°
Lower Aft Tow ~ Amber 135°

Signal Lights for setting up W (At Anchor), W/R/R (Run Aground), R/R (N.U.C.) and R/W/R (R.A.M.)
Anchor ~ White 360°
Upper Red N.U.C./R.A.M. ~ Red 360°
Middle White R.A.M. ~ White 360°
Lower Red N.U.C./R.A.M. ~ Red 360°

Vessels over 50m (165′) will have two (FWD & AFT) Masthead & Anchor Lights

Obstruction Lights for setting up Red over Red along with Green over Green on either side of vessel during Dredging or Under Water Operations