Galvanic Corrosion

Marine Electrical Isolation Architecture

Top-Down View (Internal Layout)
IN ISOLATOR AC BUS ENG DC BUS VALVE STRNR PORT OB STBD OB
Aft Transom View (Waterline)
WATERLINE DC BUS HULL ZINC PORT STBD
System Overview: Select a system above to trace the electrical paths. Notice how the AC power, the internal DC bonding, and the outboard engines operate in distinct, isolated zones to prevent catastrophic corrosion.

The Shared Marina Ground Network & Stray Current

WATERLINE MARINA DOCK (SHARED GROUND NETWORK) YOUR BOAT ISOLATOR ⚡ 12V DC LEAK HULL ZINC BRONZE OUTBOARD NEIGHBOR'S BOAT (No Zincs) BRONZE
System Overview: Select a scenario to see how electrical currents—both galvanic (slow) and stray DC (fast)—move through the vessel's hull and the marina water.

The Battery Ground vs. Transom Bonding

WATERLINE INSIDE THE BOAT OUTBOARD ENGINE ZONE BATTERY DC BONDING BUS SAFETY BRIDGE SWITCH ENGINE BLOCK BRACKET GEARCASE ⚡ ZERO-RESISTANCE FAST LANE HIGH-RESISTANCE PATH
1. System OFF (Marina Mode): The boat is parked. The battery switch is open. The outboard is completely disconnected from the boat's internal grounding network and relies safely on its own factory anodes.