Navy Establishes New Submarine Chief of Boat Rating
The new rating standardizes career paths for active-duty E-9 submarine personnel serving as senior enlisted advisers.
Updated on Oct. 20, 2026 in Military Jobs
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The U.S. Navy has officially established the Submarine Chief of the Boat (COBCM) as a formal general rating. This organizational shift transitions the role from a billet-based designation to a standardized career path for senior enlisted submarine personnel.
Why it matters
By formalizing the COBCM rating, the Navy aims to provide clearer advancement trajectories and specialized training for submarine sailors. This structure creates more predictable professional development for those serving as the commanding officer's primary enlisted adviser.
The transition replaces the previous 36-month billet-based tour structure with a formalized general rating. The new COBCM designation is limited to active-duty submarine-qualified personnel at the E-9 paygrade, whereas the prior system previously allowed both E-8 and E-9 ranks.
The players
U.S. Navy
The maritime branch of the United States Armed Forces responsible for naval operations, personnel management, and national security.
Submarine Chief of the Boat
A newly established senior enlisted rating that serves as the principal enlisted adviser to a commanding officer on submarine vessels.
The details
The NAVADMIN establishes the Submarine Chief of the Boat as a core general rating, necessitating that all candidates adhere to the COMSUBLANT/COMSUBPACINST 1306.2 program assignment instructions. Non-nuclear submarine ratings serve as the primary pipeline for new candidates seeking this command master chief-equivalent role. Current E-9 personnel holding the 8COB designation will be converted to the new COBCM rating immediately.
Timeline
October 19, 2026: The U.S. Navy released the NAVADMIN announcing the rating change.
Market Landscape
This development follows the long-standing regulatory framework established by COMSUBLANT/COMSUBPACINST 1306.2. By folding the role into a general rating, the Navy standardizes a command structure that previously relied on variable billet-based designations.
Operators managing personnel pipelines or government contracts should note the immediate conversion of 8COB-designated E-9s to the new COBCM rating. Organizations involved in defense training or procurement should monitor if these specialized advancement paths shift retention or service duration metrics.
The takeaway
The formalization of this rating signals a shift toward standardized professional development for senior enlisted staff. Personnel managers should track the COMSUBLANT/COMSUBPACINST 1306.2 guidelines as they define the eligibility and training pathways for this command-level role.
Further reading
For more on evolving service requirements, see our Military Jobs section.
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