46 C.F.R. § 11.303
(c) The Coast Guard will accept onboard training and experience, through evidence of 1 year of sea service within the last 5 years, as meeting the requirements of paragraph (b) of this section for the following areas as set out in Table A-VI/3 of the STCW Code:
(1) Control firefighting operations aboard ships with the following knowledge, understanding, and proficiencies:
(2) Inspect and service fire-detection and extinguishing systems and equipment.
(d) The Coast Guard will only accept evidence of assessments conducted ashore as meeting the requirements of paragraph (b) of this section for the following areas as set out in Table A-VI/3 of the STCW Code:
(1) Control firefighting operations aboard ships with the following knowledge, understanding, and proficiencies:
(3) Inspect and service fire-detection and extinguishing systems and equipment.