/ 25W. Base Type BAY 15d. Double Contact Bayonet Base. Bulb Length 2
5/8", Bulb Diameter 1". For Aqua Signal Navigation Light series 40, 41,
42, 50, 55.
Bulbs for Navigation
Nav lights are certified as a
housing/lens/bulb combination. The USCG only approves through third
party testing, entire fixtures including the bulb. Change to any of
those components with a part that is not original and the light is no
longer certified. The bulbs that are offered are the direct
replacements of Aqua Signal incandescent bulbs certified with the light.