New ship manufacturing defect leading to failure

Summary:
No Flow Alarm came for Cylinder lubrication system.
We took delivery, a vessel from Korea (Oil tanker) After 5 months of sailing we were going through piracy area suddenly the alarm came and ship stopped (Shutdown) After some investigation we found that there is level gear arrangement for the mechanical lubrication system which was damaged due to lack of lubrication, the reason is that while manufacturing the ship the small Lub oil line was not provided in the system for lubrication

Corrective Action/ Lessons to be learnt:
We were having the spare level gear system onboard so that we changed the level scar system and provide a lub oil connection from the header tank, So we filled the header tank with oil frequently and ran of the ship up to the destination. The shipyard service engineers came to ship and the reinstated pipe for the lubrication and the problem solved