Can Classification Societies with Their Rules on Redundancy Propulsion Improve Statistics on Oil Spills and Cleaning Costs?

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For some time now we have been seeing an increasing demand for redundant propulsion concepts. Major Classification Societies have answered the desire of ship owners andyards to have theirredundant propulsion concepts evaluated andreceive Class notation. When we talk about redundancy we have to compare risks of different options that compete for the same final result and for this result we have to decide what our goal is. Most of the time everything is fine but once in its lifetime ship can experience event for which its abilities are surpassed. Either propulsion is lost and the ship cannot control its behavior during the storm and the final results are lost lives or the ship is lostwith apolluted environment. Most ofthe ships are not equippedwith redundantpamllel propulsion system. The most common is that any redundancy is cost which burdens the operating company through the years and that this kind of approach is not to follow. Even the Safety costs are not really defined since the compensation for the lost lives is negotiable and it also depends on the law skills ofthe lawyers. Therefore only the Business costs canbe definedwith relative correctness.

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