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SVTPerformance's Chain of Restaurants
Road Side Pub
Total bridge collapse in Baltimore...
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<blockquote data-quote="RES0574" data-source="post: 17027126" data-attributes="member: 176936"><p>I am willing to bet fuel filters/RACOR for the generators. Either someone swapped out filters while she was berthed and did not clear any trapped air after the swap, or dirty fuel. I would also check fuel from the settlers and the day tanks.</p><p></p><p>She has 5 generators onboard with +20K kVA. I am going to guess they had generators (2 min) paralleling with one on STNDBY. With the fuel issue, the paralleling generators started dropping RPM, thus UV and Freq issues, and breakers tripped. That is when you see the first power outage. The CE or EoW then switched over to the STNDBY generator, and that is when the lights came back on assuming that they were not using a Power Management System. Lights go out again when the STNDBY generator goes off line due to same fuel issue. The third time that the lights come back on is probably because the Egen was online, and has an independent fuel source. The Egen requires anywhere from 30 to 45 seconds without voltage on the main bus to kick on. Once all of the ER generators were failing, CE or Master/Capt probably directed to remain on Egen so atleast they would have minimum vital systems (half of the steering HPU, cooling pumps, etc.).</p><p></p><p>The dark plume of exhaust is when the Master when from full ahead for maximum thrust across the rudder to crash stop/full astern. Curious as to how the main shaft responded.</p><p></p><p>They do not maneuver in harbor under any automation, so no AP or Autotrack, it is manually controlled at the helm or wing stations.</p><p></p><p>There are two pilots: a Docking Pilot to take her away from the berth and a River/Bay pilot to sail and navigate from the channel down to the Bay opening. Tugs are only there to assist when moving away from the berth, and typically they are not "made up"/secured with lines. This vessel has thrusters, so she can handle normal environmental dockings by herself. After the vessel moves from the berth, the assist tugs depart because they are not escort tugs, and they have other vessels to assist or go back to the berth for downtime.</p><p></p><p>You can see from the AIS tracking that one of the assist tugs turned around and tried to return to the vessel to assist but was too late with too much distance to cover.</p></blockquote><p></p>
[QUOTE="RES0574, post: 17027126, member: 176936"] I am willing to bet fuel filters/RACOR for the generators. Either someone swapped out filters while she was berthed and did not clear any trapped air after the swap, or dirty fuel. I would also check fuel from the settlers and the day tanks. She has 5 generators onboard with +20K kVA. I am going to guess they had generators (2 min) paralleling with one on STNDBY. With the fuel issue, the paralleling generators started dropping RPM, thus UV and Freq issues, and breakers tripped. That is when you see the first power outage. The CE or EoW then switched over to the STNDBY generator, and that is when the lights came back on assuming that they were not using a Power Management System. Lights go out again when the STNDBY generator goes off line due to same fuel issue. The third time that the lights come back on is probably because the Egen was online, and has an independent fuel source. The Egen requires anywhere from 30 to 45 seconds without voltage on the main bus to kick on. Once all of the ER generators were failing, CE or Master/Capt probably directed to remain on Egen so atleast they would have minimum vital systems (half of the steering HPU, cooling pumps, etc.). The dark plume of exhaust is when the Master when from full ahead for maximum thrust across the rudder to crash stop/full astern. Curious as to how the main shaft responded. They do not maneuver in harbor under any automation, so no AP or Autotrack, it is manually controlled at the helm or wing stations. There are two pilots: a Docking Pilot to take her away from the berth and a River/Bay pilot to sail and navigate from the channel down to the Bay opening. Tugs are only there to assist when moving away from the berth, and typically they are not "made up"/secured with lines. This vessel has thrusters, so she can handle normal environmental dockings by herself. After the vessel moves from the berth, the assist tugs depart because they are not escort tugs, and they have other vessels to assist or go back to the berth for downtime. You can see from the AIS tracking that one of the assist tugs turned around and tried to return to the vessel to assist but was too late with too much distance to cover. [/QUOTE]
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SVTPerformance's Chain of Restaurants
Road Side Pub
Total bridge collapse in Baltimore...
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