What are the requirements for maintaining closed conditions under mod zebra?

The requirement for maintaining closed conditions under modified zebra is particularly focused on the logging of scuttles that are left open. Keeping accurate records is vital in damage control situations because it allows for better accountability and situational awareness. By logging open scuttles, crew members can ensure that all personnel are aware of the closures or openings that could affect the vessel's integrity. This information is crucial during emergencies, as it helps the crew manage personnel and resources effectively while maintaining the integrity of the ship's compartments.

Maintaining closed conditions under modified zebra is essential to minimize the risk of flooding and to ensure that fire suppression systems operate effectively. Therefore, properly managing and logging such openings contributes to overall safety and operational efficiency.

The other options do not accurately reflect the protocols required under modified zebra conditions. For instance, simply closing main hatches or allowing watertight doors to remain open fails to consider the necessity of maintaining all closures properly. The requirement to ensure that all pertinent fittings be closed without appropriate notification could lead to confusion or the potential for oversight in emergency situations.