5343 — second class diver The effective date of the ND rating was June 1, 2006 for E6-E9 (senior non-commissioned officers), and October 1, 2006, for E1-E5 junior enlisted. E4 (ND3) — Navy diver third class E5 (ND2) — Navy diver second class E6 (ND1) — Navy diver first class E7 (NDC) — Chief Navy diver E8 (NDCS) — Senior Chief Navy diver E9 (NDCM) — Master Chief Navy diver Officer designators Designation as a Diving Officer for selected:MILPERSMAN 1210-140 Unrestricted Line (117X, 112X) Restricted Line/Staff Corps (146X, 144X, 210X, 510X) Limited Duty (61XX, 648X, 653X) Warrant (71XX, 72XX, 748X, 753X) 1440 — Engineering Duty (restricted line) Officer 510x — Civil Engineer Corps (staff) Officer 720x — Diving (warrant) Officer See also Robert Croft (free dive pioneer) Clearance diver Diving gear Diving hand signals Royal Navy ships diver Underwater Construction Teams UDT References Sources Supervisor of Diving, Naval Sea Systems Command, 2007. US Navy Diving Manual .(UK): AquaPress Publishing. . Revision 5. Hardback. The complete manual for equipment, procedures and operations established by the Department of Navy. Supervisor of Diving, Naval Sea Systems Command, 2007. US Navy Diving Manual .(UK): AquaPress Publishing. . Revision 5. Looseleaf. The complete manual for equipment, procedures and operations established by the Department of Navy. https://web.archive.org/web/20080310094417/http://www.necc.navy.mil/diver/ https://web.archive.org/web/20090712084127/http://www.necc.navy.mil/content.htm External links Navy Diving and Salvage Training Center Navy.Com recruiting page NECC Diver recruiter page Naval Undersea Museum United States Navy United States Navy ratings