The provision of a detailed seawater analysis and temperature range is critical for the correct specification of a Transformer Rectifier. The T/R output has to be for full current at the lowest and highest seawater conductivity conditions which implies that this has to occur over a range of output voltages.
Any variation therefore from the specified seawater conditions could lead to an inability to meet guarantees points during commissioning and possible disputes between all parties over any extrapolation of the results.