Originally Posted by K1W1
Even if running UMS there should have been a number of ways for the engine or exhaust to announce itself to the AMS long before failure.
I have seen this on other vessels with the rubber exhaust bellows installed. The raw water gets cut off some how and before the engine gets to alarm point, the rubber exhaust bellows melts or catches fire.
Last time I have seen this happen (about 6 months ago) is when the raw water intake pipes where infested with muscles the size of your pinky nail.