What color copy of the 4100 is given to the vessel operator or owner?

The correct answer is the gold copy of the 4100 form, which is provided to the vessel operator or owner. This form is significant as it serves as a record of the inspection or boarding conducted by the Coast Guard, and the gold copy is often used by the vessel's operator for their records or future reference regarding compliance with maritime regulations.

Having the gold copy ensures that the vessel operator remains informed about any findings or requirements that were discussed during the boarding, which is crucial for maintaining safety and adherence to maritime laws. The other colored copies of the form are generated for different purposes, such as documentation for the boarding team's records or for other governmental agencies, but none hold the same significance for the vessel operator as the gold copy.