(1) An MMC with a deck officer endorsement will authorize the holder to serve in any rating capacity in the deck department, except able seaman. If a deck officer qualifies as able seaman, the MMC will be endorsed with the appropriate able seaman and lifeboatman endorsement. STCW endorsements as RFPNW and PSC will also be entered upon qualification.
(2) An MMC issued to an engineer officer endorsed for inspected vessels of over 2,000 horsepower will authorize the holder to serve in any rating capacity in the engine department. If an engineer officer qualifies as a lifeboatman, the appropriate lifeboatman endorsement will be placed on the MMC. STCW endorsements as RFPEW and PSC will also be entered upon qualification.
(b) The authorized holder of any valid rating endorsement may serve in any capacity in the staff department of a vessel, except in those capacities requiring a staff officer; except that whenever the service includes the handling of food, no person may be so employed unless his or her credential bears the food handler's endorsement “(F.H.)”.
(c) A rating endorsement as able seaman or lifeboatman authorizes service as lifeboatman.
(d) The OCMI will issue an STCW endorsement if the applicant for or holder of an MMC is qualified for the endorsement. The OCMI will issue an STCW endorsement for the following ratings:
(1) A rating forming part of a navigational watch on a seagoing ship of 500 GT or more if the holder of the credential is qualified according to STCW Regulation II/4 of the STCW Code (incorporated by reference, see § 12.01-3) to perform the navigational function at the support level.
(2) A rating forming part of a watch in a manned engineroom, or designated to perform duties in a periodically unmanned engineroom, on a seagoing ship driven by main propulsion machinery of 750 kW (1,000 hp) of propulsion power or more, if the holder is qualified in according to STCW Regulation III/4 and Section A-III/4 of the STCW Code, (incorporated by reference, see § 12.01-3) to perform the marine-engineering function at the support level.
(e) At the request of the holder of the document, the OCMI may add an endorsement to indicate that a qualified holder has received basic-safety training or instruction required under Chapter VI of STCW (incorporated by reference, see § 12.01-3).