I would like to put a suggestion in the "box". Have the Chest of Rage be able to be put into the Water Barrel and allow it to "simmer" in there instead of throwing water on it all the time.
The caveat would be that you would require to refill the barrel at intervals, a pump would be required as frequently as the chest would normally rage.
If you don't fill the barrel up it will ignite and not only start a fire, but also put the barrel out of commission for a bit... so you just can't pump water from the spigot to save the ship.
