The very 1st thing you need here is his (or now her) service number and rating. If you do not have this information you will not be able to make the request. If you know the name and date he was assigned to vessel, you can obtain a copy of the crew rosters See FAQ #2 for that vessel, the Name, Rate and Service Number can be found in the roster. After you locate his rate and service number from the roster you need to fill out the following form (Attached) and make your request for his service record to the address below. (note) You must be the service person in question or if deceased, service person's next of kin.
To download the form, right click on link and select "save as" and save to desired directory.
After saving you can open form and print it, completely fill out for and mail to addres above.
After you complete the form and submit it to the address above you will be notified in writing if your request has been granted or denied, These records are confidential and the decision to release them or not resides with the USN.