46 CFR 11.920: Examination subjects for MODU endorsements

Last reviewed: October 14, 2026

This section sets out two tables for MODU endorsements. Table 1 lists seven endorsements with code numbers. Table 2 lists examination topics and marks which endorsement codes are examined on each topic.

What it says

  1. Table 1 to § 11.920 gives the codes that Table 2 to § 11.920 uses for MODU endorsements.

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

    “Table 2 to § 11.920 indicates the examination subjects for each endorsement by the code number.”

Common questions

What do the codes in Table 1 to 46 CFR 11.920 mean?

The codes in Table 1 to § 11.920 identify the MODU endorsements that Table 2 to § 11.920 uses.

“Table 1 to § 11.920 gives the codes used in Table 2 to § 11.920 for MODU endorsements.”

How do I find the exam subjects for a MODU endorsement?

Table 2 to § 11.920 indicates the examination subjects for each endorsement by the code number.

“Table 2 to § 11.920 indicates the examination subjects for each endorsement by the code number.”

The text of 46 CFR 11.920

Electronic Code of Federal Regulations (eCFR), current as of April 16, 2026 · Read it on eCFR

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 H2 S 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

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.