How many days prior to a watch does the watch captain need to review and sign the 1090?

The requirement for the watch captain to review and sign the 1090 two days prior to a watch stems from the need for adequate preparation and coordination within the crew. This timeline allows the captain to evaluate essential information such as crew assignments, operational readiness, and any specific tasks or alerts that need to be addressed during the upcoming watch.

By signing the 1090 two days in advance, the watch captain ensures that there is sufficient time for any necessary discussions, adjustments, or training related to the content of the document. This practice enhances communication within the watch team and ensures that all members are adequately informed and prepared to carry out their duties efficiently.

This two-day requirement helps maintain operational integrity and promotes safety on board, as it encourages proactive measures rather than reactive responses to issues that could arise at the last moment.