It has come to our attention that there was an error in the way in which the probability of a damage condition occurring was calculated. This error occurred for conditions of multiple adjacent zones of damage and transverse subdivision when using the MSC.216(82) or MSC.421(98) methods. The error was that only the pFactor (due to longitudinal subdivision) were used when accounting for the probability of multiple adjacent zones being damaged. This is correct for the MSC.19(58) formulation, for cargo ships, where the p- factor and r- factor probabilities are independent, but is incorrect for MSC.216(82) or MSC.421(98) where the rFactor is dependent on the pFactor probability and so when considering multiple adjacent zones of damage the probability product p.r must be considered not the p- factor in isolation. The result was that the calculated probability of occurrence for conditions with multiple adjacent zones and transverse subdivision were in excess of what they should have been and this generally resulted in a (small) over estimate of the attained index, A.
Please refer to the MAXSURF ReadMe for further information
Full details on the changes made to MAXSURF in version 23.01.00.117 can be found in the MAXSURF ReadMe. A cumulative list of the main features to have been added to MAXSURF since Version 19 may be found here.
The MAXSURF Version 23.01.00.117 installer can be downloaded from Software Downloads or the Fulfillment Center (a Bentley login is required).
Full details on the changes made to Multiframe in version 23.01.00.117 can be found in the Multiframe ReadMe
The Multiframe Version 23.01.00.117 installer can be downloaded from Software Downloads or the Fulfillment Center (a Bentley login is required).