Nav light wiring

degas

.
Aug 14, 2023
29
Tanzer 29 Lake Ontario
Can I combine navigation lights on a single breaker?

On my 12VDC panel I currently have a few of the breakers dedicated to navigation lights:
  1. Sternlight: White light, stern, facing aft
  2. Masthead light: White light, halfway up the mast, facing forward
  3. All-round light: 360 degree white light, top of mast
  4. Sidelights: Red light and green light, bow, facing port and starboard
Transport Canadia says that I must use these lights in these ways:
  • Power: Masthead light, sternlight, and sidelights
  • Sail: Sternlight and sidelights
  • Anchor: All-round light
Considering that the sternlight and sidelights are only ever used together, why not save a breaker by merging these 2 circuits? The new setup would need only 3 breakers:
  1. Sternlight & sidelights
  2. Masthead light
  3. All-round light
  4. Free breaker ready for a new adventure
Successes? Horror stories?
 

dmax

.
Jul 29, 2018
1,163
Telstar 28 Buzzards Bay
Most boats combine the stern and side lights onto one breaker as they're never needed independently, so go for it.
 

dLj

.
Mar 23, 2017
4,293
Belliure 41 Back in the Chesapeake
That's how my boat and all others I've ever owned were wired. As in stern, port and starboard on one breaker...

dj
 
Feb 26, 2004
23,001
Catalina 34 224 Maple Bay, BC, Canada
  1. Masthead light: White light, halfway up the mast, facing forward
  2. All-round light: 360 degree white light, top of mast
Masthead is also usually called steaming light.
All-round is also usually called anchor light.