raising stern light and change to LED

[davethedog]

Afternoon all,

Hoping there is a simple answer to this question, our boat currently has a normal (non LED) stern light and this is sometimes obscured by the dinghy on the davits. Want to raise this to the wind vane pole and convert to LED, is this just a case of splicing into the existing stern light (remove the bulb in this of course) with the new LED?

DTD

 

[tross]

Yes as long as the sectors are the same

 

[zambant]

Depending on the length - consider using a mast head anchor light when our stern light is obscured thats what we do - simples
Fair winds

 

[William_H]

I made a stern light out of one of these 10w Chip on board LEDs. https://www.ebay.com/itm/10pcs-High...cf:m:mgQ5O0oFK9iBPs4DfkbMCwg&var=571330481134 It is extremely bright indeed I fitted a series resistor to reduce current and brightness. (to bring it to comparable with LED nav lights.) Now you ask about sector coverage. I saw an expensive commercially made stern light which used one of these LEDs mounted into what could be described as a reflector but in reality just a housing. So apparently close to correct azimuth coverage. Certainly from my observations coverage is close to what is required. (and very bright). I t must be mounted on a piece of ali or SS to dissipate the heat it generates at full power. Heretic yes probably but I love it. ol'will

 

[Graham_Wright]

Now you ask about sector coverage.

Specifications:
1.Model Type: High Power Integrated Chip
2. Product name: Integrated LED Bead
3. Shapes: Tetragonum
4. Integrated way:
5. Power: 10W/20W/30W/50W/100W
6. Forward Voltage: 10W:9.0-12V / Others: 30-36V
8. Luminous Flux: 90-110LM/W
9. color-rendering index: 60-85
10. Beam Angle: 120 degrees
11. Working Temperature: -20 centigrade to 60 centigrade
12. Color Temperature: Warm White: 3000-3200K
White: 6000-6500K
13. Lamp Body Material : Pure Copper Bracket

 

[William_H]

Specifications:
1.Model Type: High Power Integrated Chip
2. Product name: Integrated LED Bead
3. Shapes: Tetragonum
4. Integrated way:
5. Power: 10W/20W/30W/50W/100W
6. Forward Voltage: 10W:9.0-12V / Others: 30-36V
8. Luminous Flux: 90-110LM/W
9. color-rendering index: 60-85
10. Beam Angle: 120 degrees
11. Working Temperature: -20 centigrade to 60 centigrade
12. Color Temperature: Warm White: 3000-3200K
White: 6000-6500K
13. Lamp Body Material : Pure Copper Bracket

Thanks for that Graham. I confess I had not seen the 120 degrees beam angle bit. In practice it gives out a lot of light at a wider angle so I don't think 120 degrees is very precise. Any way I am just a bodger and not really proud of this one except for the price and brightness. Any way circumstances have changed for this new coming up season and night races have been deleted in lieu of short twilight races. We just could not get enough boat owners prepared to meet the requirements for Cat 5 racing. So for me the stern light will be just for emergencies now if I get caught out after dark. Incidentally here we do not invoke summer time clock shift so all our twilight races will have to be finished by 7.40 PM. The race dates will all be centred around summer solstice. regards ol'will

 

[sarabande]

Anchor light as a stern light ?

 

[knuterikt]

Anchor light as a stern light ?

Rule 23

A power-driven vessel of less than 12 metres in length may in lieu of the lights prescribedin paragraph (a) of this Rule exhibit an all-round white light and sidelights;