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USCG Alert regarding LED lights
- SplashyLady
- Captain
- Posts: 267
- Joined: January 5th, 2016, 10:02 am
- Vessel Info: Carver 3227 Sedan Convertible
1986 - 260 Mercruisers - Kohler 5E - Location: Lake Norman, NC
- Has thanked: 20 times
- Been thanked: 88 times
USCG Alert regarding LED lights
http://www.uscg.mil/hq/cg5/cg545/alerts/1015.pdf
Past Commodore, Peninsula Yacht Club
Lake Norman, NC
Carver 3227 - "Splashy Lady"
Aquasport 222CCP - "Gone Fission"
- Lyndon670
- Admiral
- Posts: 657
- Joined: July 29th, 2013, 11:35 pm
- Vessel Info: 2000 Carver 506
Volvo TAMD74EDC - Location: Georgian Bay
- Has thanked: 124 times
- Been thanked: 140 times
USCG Alert regarding LED lights
2000 Carver 506
FOXY JOE
Volvo 7.4TAMD
Queens Cove Marina
Georgian Bay, Ontario
- RGrew176
- Admiral
- Posts: 6422
- Joined: August 17th, 2015, 4:07 am
- Vessel Info: 2022 Stingray 182 SC
- Location: Southgate, MI.
- Has thanked: 72 times
- Been thanked: 467 times
USCG Alert regarding LED lights
> Another interesting point of conversation regarding LED lights for navigation. I
> am a police officer operating a police helicopter - amoungst the regular police
> details that we do we also perform search and potentially rescue details. We work
> along side the Coast Guard when requested. I can tell you that LED lights do not
> show up to any search parties operating with Night Vision Goggles (NVG) - which
> is how night searches are mainly conducted. It is a very small factor to consider
> when converting to LED lights for navigation lights, but it is a concern none the
> less.
Thanks for posting this very valuable information. I did not know that LED lights did not show up when using night vision equipment. I had no intent to change any of my navigation lights to LED but I will look into changing my interior lights to LED's this upcoming season.
2022 Stingray 182 SC
2004 Past Commodore
West River Yacht & Cruising Club
-
- CYO Supporter
- Posts: 6004
- Joined: July 10th, 2015, 9:58 pm
- Vessel Info: 1989 Carver 3807 Aft Cabin
- Location: Ontario, Canada
- Has thanked: 457 times
- Been thanked: 1676 times
USCG Alert regarding LED lights
> Another interesting point of conversation regarding LED lights for navigation. I
> am a police officer operating a police helicopter - amoungst the regular police
> details that we do we also perform search and potentially rescue details. We work
> along side the Coast Guard when requested. I can tell you that LED lights do not
> show up to any search parties operating with Night Vision Goggles (NVG) - which
> is how night searches are mainly conducted. It is a very small factor to consider
> when converting to LED lights for navigation lights, but it is a concern none the
> less.
Lyndon, I had heard of this pertaining to red LEDs but not other colours. I also thought that the newer generation units were better at handling that now. Is this not the case?
You seem to have experience with these so perhaps you can enlighten us with some real world experience as apposed to what we are led to believe. When performing a search using NVG, are you relying on the lights on the vessel or ambient light from say the moon, stars, and other light sources near by? I guess the more detectable light the better?
Are infrared imaging devices not used in searches? They wouldn't rely on available light and would only apply in certain circumstances where a heat signature is present but another good tool in the search arsenal I think.
Your thoughts?
- Lyndon670
- Admiral
- Posts: 657
- Joined: July 29th, 2013, 11:35 pm
- Vessel Info: 2000 Carver 506
Volvo TAMD74EDC - Location: Georgian Bay
- Has thanked: 124 times
- Been thanked: 140 times
USCG Alert regarding LED lights
NVG's are great because they see the whole picture - we flip the lenses down on our helmets and see every bit of traditional light possible. For example, we had a couple of young girls lost in a large wooded provinical (national) park a couple of years ago. It would have taken hours, perhaps days to perform a grid search and fly with the FLIR camera to locate them. With NVG's it was a simple as - believe it or not - having them open their cell phones. We were able to see the light from miles away with the NVGs. The NVGs look for the light, not the temperature frequency. Because LEDs are so far down on the temperature frequency spectrum, they remain invisible to current NVGs. There is possibly military spec NVG technology being used in the especial forces, but not by search and rescue units.
Again, for nearshore operation or small lakes- I have no issue with LED nav lights. But if the body of water is big enough, it is just something to consider.
2000 Carver 506
FOXY JOE
Volvo 7.4TAMD
Queens Cove Marina
Georgian Bay, Ontario
-
- CYO Supporter
- Posts: 6004
- Joined: July 10th, 2015, 9:58 pm
- Vessel Info: 1989 Carver 3807 Aft Cabin
- Location: Ontario, Canada
- Has thanked: 457 times
- Been thanked: 1676 times
USCG Alert regarding LED lights
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