The manufacturers have them certified
First off, I like LED's. I want to see certified LED replacements for running lights. I don't like climbing masts to change light bulbs, I don't like charging customers $75/hr travel to and from their boat to change $2 bulbs. I also cannot sell lights that are not certified. I try to keep up on what works and what doesn't so I can recommend good solutions.I'm not trying to bust anyones chops. But when someone wants to go to a flea market and get some crap that will fit into the sockets and light up, it burns me up.Good News.I found some LED running lights that have been tested to comply with USCG COLREG1972 (IMO) standards and verify conformance with the navigation light regulations of ABYC A-16.The Aqua Signal Series 32 LED lights have passed certification tests in 2006 for 2nm lights.This is a link to the 7 page test report that got one of the lights certified:http://www.ks-networx.de/aquasignal/files/content/1419680196__led_series_32_sbb_16657_2.pdfI still cannot find a replacement bulb that is certified. But I'll keep looking.mastlight.com offers no such proof of certification ... So the answer is yes, you can find proof of certification for proper marine lights. If the manufacturer of the bulb has not had it certified for marine use, you have to testify that the bulbs you use meet the standard.Use un-certified bulbs at your own risk.