A member has reported an incident involving a lifeboat davit sheave that occurred during ‘routine’ planned maintenance.
On completion of tests, run according to the company’s standard procedures, personnel had re-boarded the vessel using the lifeboat embarkation ladder and the operation to recover the lifeboat to deck was commenced. The boat reached approximately 1 metre above the deck when a loud noise was heard. The operation was stopped immediately.
Close inspection revealed that one of the davit sheaves had disintegrated around its perimeter (circumference) and that this, in turn, had caused the falls wire to jump clear of the sheave and become trapped between the sheave face and sheave bracket on the davit structure (see figure).
IMCA Safety Flashes summarise key safety matters and incidents, allowing lessons to be more easily learnt for the benefit of all. The effectiveness of the IMCA Safety Flash system depends on Members sharing information and so avoiding repeat incidents. Please consider adding [email protected] to your internal distribution list for safety alerts or manually submitting information on incidents you consider may be relevant. All information is anonymised or sanitised, as appropriate.
IMCA’s store terms and conditions (https://www.imca-int.com/legal-notices/terms/) apply to all downloads from IMCA’s website, including this document.
IMCA makes every effort to ensure the accuracy and reliability of the data contained in the documents it publishes, but IMCA shall not be liable for any guidance and/or recommendation and/or statement herein contained. The information contained in this document does not fulfil or replace any individual’s or Member's legal, regulatory or other duties or obligations in respect of their operations. Individuals and Members remain solely responsible for the safe, lawful and proper conduct of their operations.