When should you avoid using your crane to lift a buoy or mooring?

Using a crane to lift a buoy or mooring while underwater often necessitates ensuring that the crane's stability is maintained by spudding down before any lift is attempted. Spudding down involves anchoring the crane to the seabed or stabilizing its position to prevent tipping or movement during the lifting operation. This is crucial for maintaining safety because the stresses involved in lifting can compromise the crane's stability if not appropriately prepared.

In underwater operations, unforeseen factors such as water current or changes in the surrounding environment can contribute to instability. Therefore, making sure the crane is secured properly before attempting any lift is essential to prevent accidents and ensure the operation is conducted safely.

The other situations, while potentially dangerous in their own right, do not specifically pertain to the fundamental requirements of underwater crane operations. For instance, inexperience of the crane operator and poor weather conditions can pose risks but do not directly address the critical aspect of stabilizing the crane when lifting from underwater. Additionally, an open work-site raises safety concerns regarding public safety, but these issues are separate from the technical considerations required for lifting operations while submerged.