46 CFR 11.920 - Subjects for MODU endorsements.

Regulations last checked for updates: Feb 07, 2026

Title 46 - Shipping last revised: Jan 15, 2026

View all text of Subpart I [§ 11.901 - § 11.950]

§ 11.920 - Subjects for MODU endorsements.

Table 1 to § 11.920 gives the codes used in Table 2 to § 11.920 for MODU endorsements. Table 2 to § 11.920 indicates the examination subjects for each endorsement by the code number.

Table 1 to § 11.920—Codes for MODU Endorsements

1. OIM/Unrestricted.

2. OIM/Surface Units Underway.

3. OIM/Surface Units on Location.

4. OIM/Bottom Bearing Units Underway.

5. OIM/Bottom Bearing Units on Location.

6. Barge Supervisor.

7. Ballast Control Operator.

Table 2 to § 11.920—Subjects for MODU Endorsements

Examination topics	1	2	3	4	5	6	7
Watchkeeping:
COLREGS	X	X		X		X
“Basic Principles for Navigational Watch”	X	X	X	X	X	X
MODU obstruction lights	X		X		X	X
Meteorology and oceanography:
Synoptic chart weather forecasting	X	X	X	X	X	X
Characteristics of weather systems	X	X	X	X	X	X	X
Ocean current systems	X	X	X	X	X	X
Tide and tidal current publications	X	X	X	X	X	X
Stability, ballasting, construction and damage control:
Principles of ship construction, structural members	X	X	X	X	X	X	X
Trim and stability	X	X	X	X	X	X	X
Damaged trim and stability countermeasures	X	X	X	X		X	X
Stability and trim calculations	X	X	X	X		X	X
Load line requirements	X	X	X	X	X	X	X
Operating manual:
Rig characteristics and limitations	X	X	X	X	X	X	X
Hydrostatics data	X	X	X	X		X	X
Tank tables	X	X	X	X	X	X	X
KG limitations	X	X	X	X		X	X
Severe storm instructions	X	X	X	X	X	X	X
Transit instructions	X	X		X		X	X
On-station instructions	X		X		X	X	X
Unexpected list or trim	X	X	X	X		X	X
Ballasting procedures	X	X	X			X	X
Operation of bilge system	X	X	X	X		X	X
Leg loading calculations	X			X	X
Completion of variable load form	X	X	X	X	X	X	X
Evaluation of variable load form	X	X	X	X	X	X	X
Emergency procedures	X	X	X	X	X	X	X
Maneuvering and handling:
Anchoring and anchor handling	X	X	X			X
Heavy weather operations	X	X	X	X	X	X	X
Mooring, positioning	X	X	X	X		X	X
Moving, positioning	X	X		X		X
Fire prevention and firefighting appliances:
Organization of fire drills	X	X	X	X	X	X	X
Classes and chemistry of fire	X	X	X	X	X	X	X
Firefighting systems	X	X	X	X	X	X	X
Firefighting equipment and regulations	X	X	X	X	X	X	X
Basic firefighting and prevention of fires	X	X	X	X	X	X	X
Emergency procedures and contingency plans:
Temporary repairs	X	X	X	X		X
Fire or explosion	X	X	X	X	X	X	X
Abandon unit	X	X	X	X	X	X	X
Man overboard	X	X	X	X	X	X	X
Heavy weather	X	X	X	X	X	X	X
Collision	X	X	X	X	X	X	X
Failure of ballast control system	X	X	X			X	X
Mooring emergencies	X		X			X	X
Blowouts	X		X		X	X	X
H2S safety	X		X		X	X	X
General Engineering—Power plants and auxiliary systems:
Marine engineering terminology	X	X	X	X	X	X	X
Engineering equipment, operations and failures	X	X	X	X	X	X
Offshore drilling operations							X
Deck seamanship—general:
Transfer of personnel	X	X	X	X	X	X
Support boats/helicopters	X	X	X	X	X	X
Cargo stowage and securing	X	X	X	X	X	X
Hazardous materials/dangerous goods precautions	X	X	X	X	X	X
Mooring equipment	X	X	X	X	X	X
Crane use procedures and inspections	X	X	X	X	X	X
Medical care:
Knowledge and use of:
First aid	X	X	X	X	X	X	X
First response medical action	X	X	X	X	X	X	X
Maritime law and regulation:
National maritime law:
Certification and documentation of vessels	X	X	X	X	X
Ship sanitation	X	X	X	X	X
Regulations for vessel inspection	X	X	X	X	X
Pollution prevention regulations	X	X	X	X	X	X	X
Credentialing regulations	X	X	X	X	X
Rules and regulations for MODUs	X	X	X	X	X	X
International Maritime law:
International Maritime Organization	X	X	X	X	X
International Convention on Load Lines	X	X	X	X			X
MARPOL 73/78	X	X	X	X	X
Personnel Management and Training:
Ship's business including:
Required logs and recordkeeping	X	X	X	X	X	X
Casualty reports and records	X	X	X	X	X
Communications:
Radio communications and FCC permit	X	X	X	X	X	X
Radiotelephone procedures	X	X	X	X	X	X
Lifesaving/Survival:
Lifesaving appliance operation (launching, boat handling)	X	X	X	X	X	X	X
Procedures/rules for lifeboats, survival suits, personal flotation devices (PFDs), life rafts and emergency signals	X	X	X	X	X	X	X
Emergency radio transmissions	X	X	X	X	X	X	X
Survival at sea	X	X	X	X	X	X	X

[USCG-2004-17914, 78 FR 77909, Dec. 24, 2013, as amended by USCG-2021-0834, 89 FR 102336, Dec. 17, 2024]

authority: 14 U.S.C. 503; 31 U.S.C. 9701; 46 U.S.C. 2101,2103,and; 46 U.S.C. chapter 71; 46 U.S.C. 7502,7505,7701,8903,8904,8906,and; E.O. 10173; DHS Delegation No. 00170.1, Revision No. 01.4. Section 11.107 is also issued under the authority of 44 U.S.C. 3507.

source: USCG-2004-17914, 78 FR 77909, Dec. 24, 2013, unless otherwise noted.

cite as: 46 CFR 11.920