Enlisted and officer accessions are different. If you are not picked up as an Officer, you can apply to the enlisted side. There is no guarantee that you will be picked up for the enlisted side. If you have not taken an ASVAB, you will also need that done.
These poor, plain men, dwellers upon the lonely sands of Hatteras, took their lives in their hands, and, at the most imminent risk crossed the most tumultuous sea…and all for what? That others might live to see home and friends. — Annual Report of the U.S. Life- Saving Service, 1885 Recruiting Website Read here for answers to the most often asked questions about joining the Coast Guard!