2 Thorough Examination
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC/Circular.1093 – Guidelines for Periodic Servicing and Maintenance of Lifeboats, Launching Appliances and On-Load Release Gear – (Adopted on 17 June 2003)1 - Annex - Guidelines for Periodic Servicing and Maintenance of Lifeboats, Launching Appliances and On-Load Release Gear - Appendix - Specific Procedures for Maintenance and Servicing - 2 Thorough Examination

2 Thorough Examination

  2.1 As items listed in checklists for the weekly/monthly inspections also form the first part of the thorough examination, the inspection of these items should be performed by the ships' crew in the presence of the manufacturer's representative or a person appropriately trained and certified by the manufacturer for the work to be done.

  2.2 Inspection and maintenance records of inspections and routine maintenance carried out by the ship's crew and the applicable certificates for the launching appliances and equipment should be available.

  2.3 Repairs and replacement of parts should be carried out in accordance with the manufacturer's requirements and standards.

  Lifeboat

  2.4 The following items should be examined and checked for satisfactory condition and operation:

  • .1 condition of lifeboat structure including fixed and loose equipment;

  • .2 engine and propulsion system;

  • .3 sprinkler system, where fitted;

  • .4 air supply system, where fitted;

  • .5 manoeuvring system;

  • .6 power supply system; and

  • .7 bailing system.

  Release gear

  2.5 The following should be examined for satisfactory condition and operation:

  • .1 operation of devices for activation of release gear;

  • .2 excessive free play (tolerances);

  • .3 hydrostatic interlock system, where fitted;

  • .4 cables for control and release; and

  • .5 hook fastening.

  • Note 1 The setting and maintenance of release gear are critical operations with regard to maintaining the safe operation of the lifeboat and the safety of personnel in the lifeboat. All inspection and maintenance operations on this equipment should therefore be carried out with the utmost care.

    Note 2 No maintenance or adjustment of the release gear should be undertaken while the hooks are under load.

    Note 3 Hanging-off pennants may be used for this purpose but should not remain connected at other times, such as when the lifeboat is normally stowed and during training exercises.

  2.6 Operational test of on-load release function:

  • .1 position the lifeboat partially into the water such that the mass of the boat is substantially supported by the falls and the hydrostatic interlock system, where fitted, is not triggered;

  • .2 operate the on-load release mechanism; and

  • .3 reset the on-load release mechanism.

  2.7 Operational test of off-load release function:

  • .1 position the lifeboat fully waterborne;

  • .2 operate the off-load release gear;

  • .3 reset the on-load release gear; and

  • .4 recover the lifeboat to the stowed position and prepare for operational readiness.

  • Note Prior to hoisting, check that the release gear is completely and properly reset. The final turning-in of the lifeboat should be done without any persons on board.

  Davit

  2.8 The following items should be examined for satisfactory condition and operation:

  • .1 davit structure, in particular with regard to corrosion, misalignments, deformations and excessive free play;

  • .2 wires and sheaves, possible damages such as kinks and corrosion;

  • .3 lubrication of wires, sheaves and moving parts;

  • .4 functioning of limit switches;

  • .5 stored power systems; and

  • .6 hydraulic systems.

  Winch

  2.9 The following items should be examined for satisfactory condition and operation:

  • .1 open and inspect brake mechanism;

  • .2 replace brake pads, if necessary;

  • .3 remote control system; and

  • .4 power supply system.

Parent topic: Appendix - Specific Procedures for Maintenance and Servicing
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