“…the Claimants’ case is that the Vessel was unseaworthy before and at the beginning of the voyage by reason of: 1. the poor condition of the Vessel’s engine lubrication and lubrication cooling systems; and 2. the lack of adequate systems on board the Vessel to ensure that: i) the temperature of the engine lube oil was properly regulated; ii) the cooling system did not become blocked; and iii) the engine was adequately lubricated.” i) the temperature of the engine lube oil was properly regulated; ii) the cooling system did not become blocked; and iii) the engine was adequately lubricated.”
“1. Main bearing No2 upper and lower shell found completely wiped, with white metal and copper layer missing. 2. Main bearing No3 upper and lower shell found completely wiped, with white metal and copper layer missing. The back sides of the bearing shells were lightly scored indicating that the bearings had rotated inside their housings. 3. Main bearing No4 upper and lower shell found completely wiped, with white metal and copper layer missing. The back sides of the bearing shells were heavily scored indicating that the bearings had rotated inside their housings. 4. Main bearing No4 base found heavily scored. Measurements revealed that the base is closed at approximately 0.5mm which is over the Manufacturer’s limits. 5. Main bearing No4 upper cover found heavily scored and discoloured. 6. Main bearing No2 base found heavily scored. Measurements revealed that the base closed at approximately 0.6mm which is over the Manufacturer’s limits. 7. Main bearing No3 base found heavily scored. Measurements revealed that the base is closed at approximately 0.5mm which is over the Manufacturer’s limits. 8. Crankshaft main journals No2, 3 and 4 found variously scored. The magnaflux test carried out by Messrs GOLTENS revealed micro cracks at the journal area. 9. Main engine unit No3 Piston found heavily scored and wiped at various locations. 10. Main engine unit No3 cylinder liner found wiped at various locations. 11. All main engine fuel pumps and nozzles found stuck due to engine shut down during operation with heavy fuel oil. 12. All crank pin bearings found variously scored. 13. 5 pcs connecting rods found bent. 14. 4 pcs connecting rod found with cracks in way of connecting rod bolt holes.”
“Rectification (Full) The following work carried out under supervision of maker representative: 1. Disassembling of all cylinders covers, pistons, liners, jackets, removal of piping where necessary. Thrust bearing was replaced. All foundation bolts were checked. 2. All main bearing were opened for inspection. All crank shaft journals visually inspected including MPI. No evidence of overheating of crank shaft journals exept nos 2,3 and 4. All main bearings were replaced (for no 2,3, and 4 see below.) 3. Journals no 2, 3 and 4 of the crank shaft were machined in place. Upon completion of machining journals were measured and no ovality and conicity found. Hardness was measured and found acceptable. MPI examination carried out and found free of defects. 4. New undersize bearings including saddles and connecting rods were supplied by MAN Diesel & Turbine, Saint Nazaire, France. 5. Clearance of all main bearing was measured and found as per maker’s recommendations. 6. Crank shaft deflection was checked and considered satisfactory. 7. Foundation bolts and chocks were verified. 8. Main engine oil mist detector tested in operation. 9. Main engine bearing temperature control including alarm was tested. 10. Main engine tested in operation without load for 3 hrs while vessel was in anchorage. For details refer to attached documents. All inspection and tests related to this main engine damage were considered with satisfactory results.”
“32. From my investigation, it was clear that the first record of any abnormal main engine operation were the alarms that were triggered by the high temperature of the lubricating oil at the main engine inlet sensor and the sensor in the crank case that detects a high level of oil mist. There were no alarms set-off in relation to any failure of the operation of the lubricating system and there was no evidence that it had failed. 33. Although I have referred to the main engine breaking down, it did not stop due to a mechanical seizure or critical failure. It stopped because the protective auto-shutdown mechanism was triggered. 34. The Chief Engineer informed me that he did ask the Master for permission to stop the main engine manually once the above mentioned alarms were set-off. However, the Master asked for time to clear the traffic separation scheme that the Vessel was navigating within. 35. In the event, the decision was taken out of their hands, as within two minutes the high temperature alarm for main crankshaft bearing No. 4 triggered the protective auto-shutdown mechanism. The shut-down procedure was not triggered in error as it was found to be working as the main engine manufacturer intended. 36. On inspection, main bearing No. 4 was found to have been damaged in addition to damage to the journals in way of Nos 2, 3 and 4 crankshaft bearings. 37. Even with the assistance of the main engine manufacturer’s representatives, it was not possible to determine the exact cause of the failure. However, given the nature of the damage, the most likely explanation is that there was insufficient lubrication. However, there was no indication as to why this may have happened. The lubricating oil was as recommended by the manufacturers, the preceding lubricating oil analysis was within parameters and the purifiers were used continuously during the voyage without problem.”