Quote:
| Originally Posted by comship Being in such high seas (force 7) especially with a Yacht like this means that you have to cruise with the minimum possible Engines RPMs. Once I did it and apart of the Big waves I had to face the endless alarms (high temperature) of the MAN engines, and the fear of friends it was a nightmare.
That day I had seen a Uniesse encounder these waves effortless, her sea keeping was excellent |
Dear Comship,
We may speak the same language (Greek) but I will reply in your comments in English so that everyone understand,
First About heavy Sea crossing with a pair of MAN engines please note that my journeys with that state of Sea I described where never of a long duration maximum couple of hours from start to end and usually the ugly part was in the meddle of my crossing,
Secondly I have never lower the revolution on the engines in their minimum 600rpm since my speed where never 6-8 kn., as said I was doing much higher speeds,
Last my engines where the 700 PS 6 cylinder monoblock model from 2003 (I do not know about yours) with few upgrades and modification made by MAN UK and Nuremberg Germany, meaning fuel adjustment and air combustion as well as a newer software in the MMCs was fitted due to small problems I was facing too I have had special blowers fitted in my engine room you have that too?
Consequently the temperature sensors as well as air and oil pressure sensors where replaced and the new ones adjusted for high temperature environment use. That can be your problem sensors are coming to us in Southern Eastern part of the world with the temperatures level fixed for northern use as per factory statement to me check that out.
Ask the local MAN dealer in Greece (Thomas PENKA you must have heard of him) to take a look in to your engines in regards to alarms sometime are not real.
If they where real the MMC will go in to second step meaning 600rpm mode and that is hard to get in heavy seas-weather with people on board that are not used to that kind of sounds.
Last, next time check engines before do another trip in case the alarms are real.
Safe and pleasures journeys
Nice talking to you
Xanax