33 C.F.R. § 148.213
How do I withdraw my application?
The applicant may withdraw an application at any time before the proceeding is terminated by delivering or mailing notice of withdrawal to the Commandant (CG-5P) for docketing.
The applicant may withdraw an application at any time before the proceeding is terminated by delivering or mailing notice of withdrawal to the Commandant (CG-5P) for docketing.