What type of conditions might necessitate the use of shoring battens on a ship?

The use of shoring battens on a ship primarily arises from stability concerns due to hull damage. When a ship experiences damage that compromises its structural integrity, such as breaches in the hull or bulkheads, stability can be severely affected. Shoring battens serve as critical structural reinforcements, providing temporary support to help maintain the shape of the damaged areas and ensure that the vessel remains stable and buoyant.

Using shoring battens can help distribute loads and prevent further deformation of the ship's structure, which is essential for the safety of the vessel and its crew. It allows for damage control efforts to proceed effectively, minimizing the risk of capsizing or sinking during an emergency situation.

The other conditions listed, such as heavy fog, outdated navigational systems, and high-pressure weather systems, do not necessitate the use of shoring battens. These conditions might require different safety or operational precautions; for instance, navigation may be more challenging in heavy fog, but it does not warrant structural modifications like shoring. The focus on stability concerns due to hull damage ties directly into the primary purpose of using shoring battens, making this the correct choice.