There is no end of LED lights available now, entire fixtures as well as replacement bulbs.   But Dr. LED’s new 360-degree festoon bulb replacement caught our attention recently because it is an excellent replacement for the bulbs found in established Perko navigation light fixtures. There are thousands of such navigation light systems installed and the Dr. LED festoon is designed to replace the Perko Fig 71 bulb. This festoon meets government regulations for all-around shine with a minimum of two-nautical-mile visibility. About $20.