Multiple mooring lines through ONE closed chock is not a good practice!!

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A Near Miss was reported in the Past?at OSIS with a vessel that participated in an STS Operation. The near miss was associated with damages to the multiple mooring lines that were directed through one closed chock. Although the mooring lines did not break, they were heavily damaged due to excessive friction. The damage was noticed upon completion of the STS operation by the vessel?s crew whose mooring lines were damaged. As a result the damaged mooring lines had to be replaced with new ones immediately.

Although concerns were raised by our member owners during the planning phase, the involved Service provider ensured that the STS operation would take place according to the latest OCIMF guidelines. Due to the fact that open chocks are not recommended to be used for the STS operations, the involved service provider decided that 4 mooring lines should be directed from the foremost closed panama chock of the maneuvering vessel.

Below photos received by our member vessel depict the condition of the mooring lines upon completion of the STS operation.

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LESSONS LEARNED

The following lessons are extracted from reported near miss.