Does anyone know of a drop-in LED fixture replacement for our Aqua Signal Series 25 bow and stern lights? The only one I found that matches the hole pattern is from Marinebeam and it doesn't look to be USCG certified (https://store.marinebeam.com/economy-series-25-led-navigation-light-bi-color-bow-port-starboard/ (https://store.marinebeam.com/economy-series-25-led-navigation-light-bi-color-bow-port-starboard/)).
Marinebeam's USCG certified red/green nav light (https://store.marinebeam.com/led-bi-color-navigation-light/ (https://store.marinebeam.com/led-bi-color-navigation-light/)) is the closest I've found but the mounting pattern is different.
Defender's spring launch sale has deep discounts on nav lights but don't want to try to make a deck mounted light work. The Aqua Signal 28 white light should work for the stern light.
I used Hella brand.
I have just finished installing Marinebeam's USCG series lights for my bow and stern light.
https://store.marinebeam.com/stainless-steel-led-navigation-lamps-uscg-ip67/
My brackets were failed and broken so I elected to make new brackets and had them welded on. It was a terribly complicated project with SO MANY steps. It was definitely worth the end result, but I would probably not do it again the same way.
A few years ago I bought a new bow fixture and LED bulb from Catalina Direct. PN is Z1235 for the fixture and Z2508 for the LED bulb. If your fixture is ok, the LED bulb should fit as a bulb replacement.
Kyle : As I recall the replacement bulb needs to be a dimpled fastoon type bulb size!! Look in Superbright LEDs
A thought
Thanks for the feedback. I was worried about USCG "certification" and use of LED bulbs in my existing fixtures, however Marinebeam support told me "USCG certification is only required for commercial vessels and OEMs - otherwise, the COLREG 72 requirements are all you need to worry about. The Economy 'Series 25' replacements are up to COLREG 72 specs but haven't been certified because of the replaceable bulb..."
To verify I found this marine safety alert from the USCG (https://www.dco.uscg.mil/Portals/9/DCO%20Documents/5p/CG-5PC/INV/Alerts/1015.pdf (https://www.dco.uscg.mil/Portals/9/DCO%20Documents/5p/CG-5PC/INV/Alerts/1015.pdf)) that states "The Coast Guard strongly recommends that boaters avoid purchase and installation of any light that does not present the required certification data, and retailers advise their customers to purchase certified navigation lights." Certification is not required per se as long as they meet requirements.
Based on this I'm leaning toward replacement bulbs.
In my case, new clear lenses (not compromised by 30 years of the elements), and a proper LED fixture that is USCG certified, was worth the $125 (+/-) cost (at the time).
https://www.boatid.com/hella-marine/hella-marine-bsh-naviled-pro-bi-color-navigation-lamp-1627427661.html?offermpnid=4620481601&view=758050&gclid=EAIaIQobChMI5Nu-9Z7q9gIVgwh9Ch11oQiAEAQYAyABEgL0m_D_BwE.
While an LED "bulb" may fit/work, sometimes an LED replacement bulb in a incandescent fixture, doesn't line-up correctly, and/or the fixture isn't designed for LED etc. Something to consider.