What size shackle is used to attach the crane whip and recovery pendant when recovering the Dan Buoy?

The use of a 1/2-inch shackle to attach the crane whip and recovery pendant when recovering the Dan Buoy is based on several factors, including safety, compatibility, and load requirements.

A 1/2-inch shackle is typically strong enough to handle the weight and forces involved in recovering a Dan Buoy while also being manageable in terms of size and weight. Shackles that are too large can be cumbersome and may create unnecessary complications in operation, while those that are too small may not have the required strength and could lead to equipment failure or accidents.

Additionally, the choice of a 1/2-inch size allows for efficient connection to the lifting gear while ensuring that the overall rigging setup remains versatile for various recovery operations. This balance of strength and practicality is crucial in marine recovery operations where safety and functionality are paramount.

Overall, a 1/2-inch shackle is widely recognized as an appropriate choice for this specific application, aligning with common industry practices and safety standards in marine operations.