Naval Units' stats and properties can be modified as a whole, by using the GameEnums.UnitType_Naval variable.For instance:

CO_TEST.getOffensiveBonus = function (co, attacker, atkPosX, atkPosY,
    defender, defPosX, defPosY, isDefender, action,luckmode, map) {

    if (co.getIsCO0() === true) {
            switch (co.getPowerMode()) {

            case GameEnums.PowerMode_Power:
                if (attacker.getUnitType() === GameEnums.UnitType_Naval) {
                    return 30;
                }
            break; 
       //rest of the code goes here
       }

    }

}


Increases the Offense of Naval Units by 30% during the CO Power.


Modifying stats or properties of specific Units

Each Unit can be modified through a comparison of the UnitID. The Unit ID can be obtained through unit.getUnitID() And it's of a String type.

Possible values are:

Naval Units
GUNBOAT CANNONBOAT TORPEDOBOAT FRIGATE DESTROYER CRUISER
SUBMARINE BATTLECRUISER BATTLESHIP AIRCRAFTCARRIER BLACKBOAT LANDER ZCOUNIT_MISSILE_SUB[1]


Of these, the ones with the ZCOUNIT_ prefix are Units specific to COs that cannot be deployed by the rest.

Notes

  1. CO Unit of Drake, Greyfield