32 C.F.R. § 707.3 Yard arm signaling lights.
Title 32 - National Defense
Naval vessels may display, as a means of visual signaling, white all round lights at the ends of the yard arms. These lights will flash in varying sequences to convey the intended signal.
Title 32: National Defense
PART 707—SPECIAL RULES WITH RESPECT TO ADDITIONAL STATION AND SIGNAL LIGHTS
§ 707.3 Yard arm signaling lights.
