Not mentioned but the neutral conductors for all of the loads on the inverter (those four circuits in your diagram) must have their own neutral buss which ties at the inverter's neutral; very important.... It must be a separate and isolated circuit just like the hot side.
When the inverter transfers to inverted AC power the neutrals also transfer and then the inverter bonds the neutrals to the boat's ground network which will prevent damage to the inverter, eliminate ground loop noise, and prevent the GFCI devices from tripping; not to mention safety.
That brings up the bonding of the inverter chassis to the boat's ground plane; That wire should be able to manage all potential faults which, for this energy level, should be no less than a 4 gauge wire.
When the inverter transfers to inverted AC power the neutrals also transfer and then the inverter bonds the neutrals to the boat's ground network which will prevent damage to the inverter, eliminate ground loop noise, and prevent the GFCI devices from tripping; not to mention safety.
That brings up the bonding of the inverter chassis to the boat's ground plane; That wire should be able to manage all potential faults which, for this energy level, should be no less than a 4 gauge wire.