Wire does go bad on boats and if you feel like undertaking this project
then do so. I have had to replace some of my wiring, primarily where staples were driven through the vinyl headliners, piercing the wire insulation. Over time the wire corrodes.
That said...there are a lot of differences between house and boat wiring. Here is some of them
1) Black is hot in house wiring. Its ground on a boat.
2) White is the neutral (return) in a house. White or red is Hot on a boat.
thing is you will have both systems on your boat.
3)Copper wire works fine in a house. Marine grade wire is silver coated or it will corrode.
4) You have AC in a house and also communications
wiring. You may have AC, communications
and DC mixed systems on a boat, like an inverter
. It's important to prevent long runs with the AC system wires running parallel to the other systems. Best to cross at 90 degrees.
5) Wires in a house are sized by current
rating. Some of the wiring in a boat is sized for rf performance...skin effect. Also, in the case of the ssb antenna
wire, very high voltage (600v).
6) There are many safety
standards appropriate to boat wiring. Far too many to list here.
7) An electrician, certified to wire a house, is not competent to wire a boat.
8) The communications systems (nmea, sensors like wind
, etc.) require special consideration in the choice of wire.
Hope you get help but choose your help carefully. A lot of hackers out there who only think they know about this subject. JMO