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LED''''s vs. Incandenscent Bulbs for Running Lights??
The LEDs by Deep Creek and Davis are arranged in arrays around the perimeter. Thus, they should radiate in the right direction with the required visibility.
However, these lights are not USCG certified. That is, while they easily fulfill the visibility requirements, they might cause you some headache if you cruise in the US and get hit by a lawsuit (example: dumbass PWC hits you in anchorage but hires the right contingency lawyer).
I like the design and I really like the amp draw of the Deep Creek stuff since it allows the use of very thin wires going up the mast - less weight and lower amp draw but you pay for it! Furthermore, the deep creek masthead anchorage lights turn off w/daylight, so you never have to remember to turn them off in the morning.
The SMT LEDs they are using these days are going to allow them to create all sorts of interesting and thin shapes. In the future, commercially available LEDs may even surpass the luminosity efficiency of flourescents (lumens per watt)