Final answer:
In engineering, ropes greater than a certain length require CG approval, which is usually determined by the relevant safety authorities like the Coast Guard. The specific length depends on the application and location.
Step-by-step explanation:
In engineering, the approval for ropes greater than a certain length is typically determined by the relevant safety authorities, such as the Coast Guard (CG). The specific length requiring CG approval may vary depending on the application and location.
For example, in the maritime industry, ropes longer than 75 feet are typically subject to CG approval. This is because longer ropes can pose additional safety risks and may require specialized equipment or handling practices.
It is important to consult the appropriate safety regulations or industry standards to determine the exact length at which CG approval is required.