When a small passenger ship was going to moor at a pier the main engine stalled. The ship steered towards the beach next to the pier to make the grounding softer. It slid up the beach and back into the water without causing any real damage. A fire was then discovered in the machine room. After an alarm was sent to the Swedish Sea Rescue Society, the crew was able to extinguish the fire.
It was later stated that the fire had only affected the air filter and that the engine could otherwise function as usual. Further investigation showed that the engine had possibly stopped when it was reversed, since the forward power had still been high. The inertia had then forced to the engine to rotate and work against closed valves and the hot, compressed air had escaped into the air filter, which was probably contaminated with oil. This was what caused the fire to break out.
This incident shows that there is good reason to review standards for air filters. A number of incidents of a similar nature also indicate that there are reasons to avoid sudden engine manoeuvres at high speeds.
Iu reg. no. 080201-08-21176