46 CFR 11.470: Offshore Installation Manager endorsement requirements
Last reviewed: October 14, 2026
This section lists the five national officer endorsements as Offshore Installation Manager (OIM). It sets the experience, training course and senior company official recommendation requirements for each. It also sets separate requirements for holders of unlimited Master or Chief Mate credentials.
Applies toApplicants for national officer endorsements as Offshore Installation Manager (OIM).
What it says
OIM officer endorsements include OIM Unrestricted, OIM Surface Units on Location, OIM Surface Units Underway, OIM Bottom Bearing Units on Location, and OIM Bottom Bearing Units Underway.
46 CFR 11.470(a)“Officer endorsements as Offshore Installation Manager (OIM) include:”
To qualify for OIM Unrestricted, an applicant must provide evidence of either of two alternatives. One is four years of employment assigned to MODUs, including at least 1 year in a listed supervisory position, with a minimum of 14 days of that supervisory service on surface units. The other is an engineering degree plus service under paragraph (b)(1)(ii).
46 CFR 11.470(b)(1)(i)“Four years of employment assigned to MODUs, including at least 1 year of service as Driller, Assistant Driller, Toolpusher, Assistant Toolpusher, Barge Supervisor, Mechanical Supervisor, Electrician, Crane Operator, Ballast Control Operator, or equivalent supervisory position on MODUs, with a minimum of 14 days of that supervisory service on surface units; or”
An OIM Unrestricted applicant must provide a recommendation signed by a senior company official certifying that the applicant directed two rig moves each of surface units and of bottom bearing units under the supervision of an experienced rig mover.
46 CFR 11.470(b)(3)(ii)“Certifies that the individual has successfully directed, while under the supervision of an experienced rig mover, two rig moves each of surface units and of bottom bearing units; and”
An OIM Unrestricted applicant who holds an unlimited license or MMC endorsement as Master or Chief Mate must meet paragraphs (b)(2) and (3) and have at least 84 days of service on surface units and at least 28 days of service on bottom bearing units.
46 CFR 11.470(c)“must satisfy the requirements in paragraphs (b)(2) and (3) of this section and have at least 84 days of service on surface units and at least 28 days of service on bottom bearing units.”
An OIM Surface Units on Location applicant must provide a certificate from a Coast Guard-approved survival suit and survival craft training course.
46 CFR 11.470(d)(2)(ii)“A certificate from a Coast Guard-approved survival suit and survival craft training course.”
For OIM Surface Units Underway, an applicant may provide the paragraph (d)(1) experience plus a senior company official's recommendation certifying three rig moves of surface units directed under an experienced rig mover.
46 CFR 11.470(f)(1)(i)(B)“Certifies that the individual has successfully directed, while under the supervision of an experienced rig mover, three rig moves of surface units; and”
As the alternative for OIM Surface Units Underway, the senior company official's recommendation must also certify that the individual directed five rig moves of surface units under an experienced rig mover, in addition to the ten witnessed rig moves and the company qualifications program described in paragraph (f)(1)(ii).
46 CFR 11.470(f)(1)(ii)(C)“Certifies that the individual has successfully directed, while under the supervision of an experienced rig mover, five rig moves of surface units; and”
An OIM Bottom Bearing Units on Location applicant who holds an unlimited MMC endorsement as Master or Chief Mate must satisfy paragraph (h)(2) and have at least 28 days of service on bottom bearing units.
46 CFR 11.470(i)“must satisfy paragraph (h)(2) of this section and have at least 28 days of service on bottom bearing units.”
Common questions
What kinds of OIM endorsements are there?
There are five: OIM Unrestricted, Surface Units on Location, Surface Units Underway, Bottom Bearing Units on Location, and Bottom Bearing Units Underway.
“Officer endorsements as Offshore Installation Manager (OIM) include:”
Can an engineering degree be used toward an OIM endorsement?
Yes, an ABET-accredited engineering or engineering technology degree is one route, but the applicant must also have at least 168 days of service in a listed supervisory position on MODUs.
“An applicant qualifying through a degree program must also have at least 168 days of service as Driller, Assistant Driller, Toolpusher, Assistant Toolpusher, Barge Supervisor, Mechanical Supervisor, Electrician, Crane Operator, Ballast Control Operator, or equivalent supervisory position on MODUs;”
Does the National Maritime Center accept non-ABET degrees for OIM?
The National Maritime Center will give consideration to accepting education credentials from programs with other than ABET accreditation.
“The National Maritime Center will give consideration to accepting education credentials from programs having other than ABET accreditation.”
The text of 46 CFR 11.470
Electronic Code of Federal Regulations (eCFR), current as of April 16, 2026 · Read it on eCFR
National officer endorsements as Offshore Installation Manager
(a) Officer endorsements as Offshore Installation Manager (OIM) include:
(1) OIM Unrestricted.
(2) OIM Surface Units on Location.
(3) OIM Surface Units Underway.
(4) OIM Bottom Bearing Units on Location.
(5) OIM Bottom Bearing Units Underway.
(b) To qualify for an endorsement as OIM Unrestricted, an applicant must—
(1) Provide evidence of one of the following:
(i) Four years of employment assigned to MODUs, including at least 1 year of service as Driller, Assistant Driller, Toolpusher, Assistant Toolpusher, Barge Supervisor, Mechanical Supervisor, Electrician, Crane Operator, Ballast Control Operator, or equivalent supervisory position on MODUs, with a minimum of 14 days of that supervisory service on surface units; or
(ii) A degree from a program in engineering or engineering technology which is accredited by the Accreditation Board for Engineering and Technology (ABET). The National Maritime Center will give consideration to accepting education credentials from programs having other than ABET accreditation. An applicant qualifying through a degree program must also have at least 168 days of service as Driller, Assistant Driller, Toolpusher, Assistant Toolpusher, Barge Supervisor, Mechanical Supervisor, Electrician, Crane Operator, Ballast Control Operator, or equivalent supervisory position on MODUs, with a minimum of 14 days of that supervisory service on surface units;
(2) Provide evidence of training course completion as follows:
(i) A certificate from a Coast Guard-approved stability course approved for OIM Unrestricted.
(ii) A certificate from a Coast Guard-approved survival suit and survival craft training course.
(iii) A certificate from a firefighting training course as required by § 11.201(h); and
(3) Provide a recommendation signed by a senior company official which—
(i) Provides a description of the applicant's experience and qualifications;
(ii) Certifies that the individual has successfully directed, while under the supervision of an experienced rig mover, two rig moves each of surface units and of bottom bearing units; and
(iii) Certifies that one of the rig moves required under paragraph (b)(3)(ii) of this section was completed within 1 year preceding date of application.
(c) An applicant for an endorsement as OIM Unrestricted who holds an unlimited license or MMC endorsement as Master or Chief Mate must satisfy the requirements in paragraphs (b)(2) and (3) of this section and have at least 84 days of service on surface units and at least 28 days of service on bottom bearing units.
(d) To qualify for an endorsement as OIM Surface Units on Location, an applicant must—
(1) Provide evidence of one of the following:
(i) Four years of employment assigned to MODUs, including at least 1 year of service as Driller, Assistant Driller, Toolpusher, Assistant Toolpusher, Barge Supervisor, Mechanical Supervisor, Electrician, Crane Operator, Ballast Control Operator, or equivalent supervisory position on MODUs, with a minimum of 14 days of that supervisory service on surface units.
(ii) A degree from a program in engineering or engineering technology which is accredited by the Accreditation Board for Engineering and Technology (ABET). The National Maritime Center will give consideration to accepting education credentials from programs having other than ABET accreditation. An applicant qualifying through a degree program must also have at least 168 days of service as Driller, Assistant Driller, Toolpusher, Assistant Toolpusher, Barge Supervisor, Mechanical Supervisor, Electrician, Crane Operator, Ballast Control Operator, or equivalent supervisory position of MODUs, with a minimum of 14 days of that supervisory service on surface units; and
(2) Provide evidence of training course completion as follows:
(i) A certificate from a Coast Guard-approved stability course approved for an MMC endorsement as OIM Surface Units.
(ii) A certificate from a Coast Guard-approved survival suit and survival craft training course.
(iii) A certificate from a firefighting training course as required by § 11.201(h).
(e) An applicant for an endorsement as OIM Surface Units on Location who holds an unlimited MMC endorsement as Master or Chief Mate must satisfy the requirements of paragraph (d)(2) of this section and have at least 84 days of service on surface units.
(f) To qualify for an endorsement as OIM Surface Units Underway, an applicant must—
(1) Provide the following:
(i) Evidence of the experience described in paragraph (d)(1) of this section and a recommendation signed by a senior company official which—
(A) Provides a description of the applicant's experience and qualifications;
(B) Certifies that the individual has successfully directed, while under the supervision of an experienced rig mover, three rig moves of surface units; and
(C) Certifies that one of the rig moves required under paragraph (f)(1)(i)(B) of this section was completed within 1 year preceding date of application; or
(ii) A recommendation signed by a senior company official which—
(A) Provides a description of the applicant's experience and company qualifications program completed;
(B) Certifies that the applicant has witnessed ten rig moves either as an observer in training or as a rig mover under supervision;
(C) Certifies that the individual has successfully directed, while under the supervision of an experienced rig mover, five rig moves of surface units; and
(D) Certifies that one of the rig moves required under paragraph (f)(1)(ii)(C) of this section was completed within 1 year preceding the date of application; and
(2) Provide evidence of training course completion as follows:
(i) A certificate from a Coast Guard-approved stability course approved for an OIM Surface Units Endorsement.
(ii) A certificate from a Coast Guard-approved survival suit and survival craft training course.
(iii) A certificate from a firefighting training course as required by § 11.201(h).
(g) An applicant for endorsement as OIM Surface Units Underway who holds an unlimited MMC endorsement as Master or Chief Mate must satisfy the requirements in paragraph (f)(2) of this section and provide a company recommendation signed by a senior company official which—
(1) Provides a description of the applicant's experience and qualifications;
(2) Certifies that the individual has successfully directed, while under the supervision of an experienced rig mover, three rig moves on surface units; and
(3) Certifies that one of the rig moves required under paragraph (g)(2) of this section was completed within 1 year preceding the date of application.
(h) To qualify for an endorsement as OIM Bottom Bearing Units on Location, an applicant must—
(1) Provide evidence of one of the following:
(i) Four years of employment assigned to MODUs, including at least 1 year of service as Driller, Assistant Driller, Toolpusher, Assistant Toolpusher, Barge Supervisor, Mechanical Supervisor, Electrician, Crane Operator, Ballast Control Operator, or equivalent supervisory position on MODUs.
(ii) A degree from a program in engineering or engineering technology that is accredited by ABET. The National Maritime Center will give consideration to accepting education credentials from programs having other than ABET accreditation. An applicant qualifying through a degree program must also have at least 168 days of service as Driller, Assistant Driller, Toolpusher, Assistant Toolpusher, Barge Supervisor, Mechanical Supervisor, Electrician, Crane Operator, Ballast Control Operator, or equivalent supervisory position on MODUs; and
(2) Provide evidence of training course completion as follows:
(i) A certificate from a Coast Guard-approved survival suit and survival craft training course.
(ii) A certificate from a firefighting training course as required by § 11.201(h).
(i) An applicant for an endorsement as OIM Bottom Bearing Units on Location who holds an unlimited MMC endorsement as Master or Chief Mate must satisfy paragraph (h)(2) of this section and have at least 28 days of service on bottom bearing units.
(j) To qualify for an endorsement as OIM Bottom Bearing Units Underway, an applicant must—
(1) Provide the following:
(i) Evidence of the experience described in paragraph (h)(1) of this section with a recommendation signed by a senior company official which—
(A) Provides a description of the applicant's experience and qualifications;
(B) Certifies that the individual has successfully directed, while under the supervision of an experienced rig mover, three rig moves of bottom bearing units; and
(C) Certifies that one of the rig moves required under paragraph (j)(1)(i)(B) of this section was completed within 1 year preceding date of application; or
(ii) A recommendation signed by a senior company official which—
(A) Provides a description of the applicant's experience and company qualifications program completed;
(B) Certifies that the applicant has witnessed ten rig moves either as an Observer in training or as a rig mover under supervision;
(C) Certifies that the individual has successfully directed, while under the supervision of an experienced rig mover, five rig moves of bottom bearing units; and
(D) Certifies that one of the rig moves required under paragraph (j)(1)(ii)(C) of this section was completed within 1 year preceding date of application; and
(2) Provide evidence of training course completion as follows:
(i) A certificate from a Coast Guard-approved stability course approved for an MMC endorsement as OIM Bottom Bearing Units.
(ii) A certificate from a Coast Guard-approved survival suit and survival craft training course.
(iii) A certificate from a firefighting training course as required by § 11.201(h).
(k) An applicant for endorsement as OIM Bottom Bearing Units Underway who holds an unlimited License or MMC endorsement as Master or Chief Mate must satisfy the requirements in paragraph (j)(2) of this section and provide a company recommendation signed by a senior company official, which—
(1) Provides a description of the applicant's experience and qualifications;
(2) Certifies that the individual has successfully directed, while under the supervision of an experienced rig mover, three rig moves of bottom bearing units; and
(3) Certifies that one of the rig moves required under paragraph (k)(2) of this section was completed within 1 year preceding the date of application.
Sections it refers to
The plain-English explanation on this page was written with AI from the regulation text above and checked automatically before publishing: every quote appears in the text, every number comes from it, and a second model confirmed each statement adds nothing the text doesn't say. Regulation text current as of April 16, 2026. The regulation text governs. RegKnot is not affiliated with the U.S. Coast Guard.