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Calculator Policy for All Mariner Credentialing Examinations

Aug. 2, 2023 | By National Maritime Center

To standardize calculator usage during U.S. Coast Guard mariner credentialing examinations, the National Maritime Center (NMC) is implementing the following:

Beginning January 1, 2024, all mariners testing at a regional examination center, monitoring unit, or federal/state maritime academy will be issued a Texas Instruments TI-30XIIS calculator to use during their examination(s). All mariners should become familiar with the use of this calculator prior to their scheduled examination. The TI-30XIIS operating manual may be reviewed at TI-30XIIS Quick Reference Guide.  After December 31, 2023, no other calculators will be allowed in the examination room.

Any questions, concerns, or feedback should be directed to the NMC Customer Service Center by e-mailing or calling 1-888-IASKNMC (427-5662).


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This blog is not a replacement or substitute for the formal posting of regulations and updates or existing processes for receiving formal feedback of the same. Links provided on this blog will direct the reader to official publications, such as the Federal Register, Homeport and the Code of Federal Regulations. These publications remain the official source for regulatory information published by the Coast Guard.