Write the correct preposition.

Nautical charts and nautical publications, such  sailing directions, lists of lights, notices to mariners, tide tables, and all other nautical publications necessary the intended voyage, shall be adequate and up to date. Nautical publications are integral  safe navigation. It is apparent that many vessels have failed to keep them updated and/or corrected. These deficiencies have not been the cause  detention but have added to the number of deficiencies thereby contributing to ISM failures and therefore detentions. Regardless of this deficiency alone is sufficient to stop the vessel  sailing.