M/V Lubie


Bulk carrier, 30000 DWT





Propulsion Type:

Single screw CPP

Main Engine:


Propeller shaft diameter:

Ø 465 mm

Stern tube length:

3734 mm

Aft Bearing seat

Ø547x Ø546x Ø545x 1000 mm



Vessel condition:


D/D Location:

Syros S/Y



Damage / problem encountered:

I.PANTACHOS- A. VENTOURIS S.A. received an enquiry to perform Line- bore Stern tube measurements and Stern tube boring of aft stern tube bearing seat.

More specifically, the machining had to be conducted due to off limits ovality of the bearing seat inner diameters in the 3 steps.

Our company quickly responded to the enquiry, discussed the job’s scope and repair procedures with the Company’s technical representative and was promptly awarded the job.

We immediately started the preparations and modifications needed to carry out the requested repairs.

Rectification process followed:

The procedure mentioned below was followed for the shaft line.

  • Line- bore stern tube measurements of shaft line, with laser.
  • Set up, alignment and machining of aft stern tube housing Φ547x546xΦ545x1000L mm.
  • Line- bore stern tube measurements of shaft line, after machining.
  • Calibration check of machined bearing seat steps.

The above mentioned laser sighting & machining procedures were completed successfully owing to:

  • the use of our own special, custom-engineered equipment,
  • the provision of our own special cutting tools,
  • the high technical expertise and advanced know-how of our service engineers.