Hi

Currently I have an old 6 switch breaker panel which has one faulty switch. I want to buy a new 6 or 8 switch breaker panel and have the following things to provide power for;

1. anchor light
2. navigation lights
3. mast head light
4. VHF, stereo and GPS
5. cabin lights
6. temperature and oil pressure gauges
7. depth gauge
8. USB socket for charging
9. galley sink water pump

Can I use a positive buss bar for say "accessories" e.g.; VHF, stereo, cabin lights, gps, USB, galley sink pump
so that it only uses one breaker switch ? Will that overload that breaker switch ?

Whats the best way to design this ?

cheers