Policy and Guidance - Vessels involved in OCS Activities

Vessels that support or conduct OCS Activities fall under numerous vessel types and categories. The majority of the vessels that are involved in this work are Offshore Supply Vessels (OSVs), Industrial Vessels or Small Passenger Vessels. These vessels are mostly regulated under 46 CFR Subchapters L, I and T, respectively. 46 CFR Subchapters D, F, J, O and S and 33 CFR also have applicabilities to these vessel types. For vessels involved in OCS Activities, the following chapters in the Marine Safety Manual (MSM), Volume II: Section G - OCS Activities apply:

  ○  Chapter 1, Regulations, Policy and Guidance for a Unit Conducting an OCS Activity, and
  ○  Chapter 6, Procedures Applicable to Other Vessels Engaged in OCS Activities.

Job Aids, which replaced the legacy CG-840 Books, will be posted on the Job Aid page (as they are revised and published).


Reference "Books" (by subject):
  ○  Accommodations
  ○  Vessel General Permit


"Old" CFRs (click on the "year"):
  ○  46 CFR Subchapter I, "1995" and "1963"
  ○  46 CFR Subchapter J, "1995" and "1981"
  ○  46 CFR Subchapter T, "1995"


Policy Letters that apply to support vessels (OSVs (to include Liftboats) and small passenger vessels suppoting oil and gas operations) are listed in the tables below, grouped by issuing authority and ordered from newest to oldest (by policy number).

National Level Policy
Office Policy Number Date Issued Subject

Office of Commercial Vessel Compliance
18-04 03Apr2018 Guidance on Implementation of New Standards for Fire Protection, Detection and Extinguishing Equipment
CG-CVC 17-09 27Nov2017 Issuance and Acceptance of Electronic Certificates
CG-CVC 14-03 06Apr2015 Evaluating Sea Service aboard Liftboats
CG-CVC 13-02 05May2013 MARPOL Annex VI International Energy Efficiency (IEE) Certificate Implementation Guidance
CG-CVC 13-01 26Feb2013 Interim Guidance for Revised MARPOL Annex V Implementation
CG-CVC 12-08 15Oct2012 Guidance Implementing the International Convention on the Control of Harmful Ant-Fouling Systems on Ships (CANCELLED, see MSM Vol II)
CG-CVC 12-05 11Oct2012 Hours of Rest – Implementation of the 2010 Amendments to the International Convention on Standards of Training, Certification and Watchkeeping for Seafarers, 1978
CG-CVC 12-04 25Jul2012 Guidelines for Compliance and Enforcement of the Emission Control Areas Established within the United States Jurisdiction as Designated in MARPOL Annex VI Regulation 14
CG-CVC 12-03 01Jun2012 Endorsement of Offshore Supply Vessels (OSV) as Oil Spill Response Vessels (OSRV)
11-04 13Apr2011 Compliance Verification of Alternative Security Program for MTSA Regulated Vessels and Facilities
CG-543 11-01 11Feb2011 Guidelines for Coast Guard Evaluations of Compliance with the U.S. Environmental Protection Agency’s (EPA) Vessel General Permit (VGP) for Discharges Incidental to the Normal Operation of Vessels
CG-543 10-05 26Nov2010 Electronic Navigation Publications onboard U.S. Vessels
CG-543 10-01 04Mar2010 Use of Single Voyage Load Line Authorizations
CG-543 09-02 12Aug2009 Industry Guidelines for Requesting Alternate Planning Criteria Approval, One Time Waivers and Interim Operating Authorization
CG-543 09-01 04Feb2009 Guidelines for Ensuring Compliance with Annex VI to the International Convention for the Prevention of Pollution from Ships (MARPOL) 73/78; Prevention of Air Pollution from Ships
CG-543 07-02 04Mar2008 Guidance on the Inspection, Repair and Maintenance of Liftboats
G-MOC 05-02 03May2005 Guidelines for Interim Voluntary Implementation of Annex VI to the International Convention for the Prevention of Pollution from Ships (MARPOL) 73/78; Prevention of Air Pollution from Ships
G-MOC 04-13, Rev-1 24Mar2005 Guidelines for the Inspection of Oily Water Monitor and Separator Systems
G-MOC 04-06 10Aug2004 Guidance for Ballast Water Regulations
G-MOC 04-05 29Mar2004 Guidance when Considering Exemptions from the SOLAS Requirement to Carry Voyage Data Recorders (VDR)
G-MOC 04-02 17May2004 Global Maritime Distress and Safety System (GMDSS) Operator Requirements
G-MOC 03-03 08Sep2003 Guidelines for Equivalent Compliance with (Revised) MARPOL 73/78 Annex IV (Sewage)
G-MOC 01-01 13Apr2001 Cargo Ship Fixed Fire-Extinguishing System SOLAS Exemptions
G-MOC 4-00, Rev-1 26Apr2001 Watchkeeping and Work-Hour Limitations on Towing Vessels, Offshore Supply Vessels (OSV) & Crew Boats Utilizing a Two Watch System
G-MOC 00-02 22May2000 Five-Year Certificate of Inspection (COI) and SOLAS Survey Intervals

Office of Design and Engineering Standards
CG-ENG 01-18 01May2018 Equivalency Determination – FRP Gratings Conforming to ASTM F3059
CG-ENG 01-16 29Apr2016 Portable Accommodation Module (PAM) Guidance
CG-ENG 03-15 03Sep2015 Acceptance of CAP-437, Standards for Offshore Helicopter Landing Areas
CG-ENG 02-14 30Apr2014 Approval of Equivalencies to the Requirements for Odorizing Units on Fixed Carbon Dioxide Fire Extinguishing Systems
CG-ENG 01-14 04Mar2014 Lifeboat Release Mechanisms: Policy on Implementation of New SOLAS Regulation III/1.5 and IMO Circular MSC.1/Circ.1392
CG-ENG 05-12 07Sep2012 Policy on the Implementation of Additional Personnel Safety Requirements for Carbon Dioxide Fire Suppression Systems

National Maritime Center
NMC 05-01 06Mar2001 Lifeboatmen and Proficiency in Survival Craft (PSC) Qualifications for Service on Vessels not Equipped with Lifeboats


District Eight (D8) Policy
Policy Number Date Issued Subject
01-2017 01Sep2017 Temporary Emergency Berthing Vessels
05-10 19Nov2010 Eighth District Guidance Regarding Implementation of MARPOL Annex II and IMO Resolution A.673 for Existing OSVs
02-2004 02Apr2004 Foreign Crewmembers Working on board Offshore Supply Vessels
22Jan2003 Use of Dynamic Positioning (DP) by Offshore Supply Vessels (OSVs) for Oil and Hazmat Transfers
01-2002 25Oct2002 Delegation of Authority to OCMIs to Grant Drydock Extensions
07-1999 14Jul1999 Loadline Extension Authority up to 150 Days for Approved Assignment Authority
09-1998 25Sep1998 Detainment of Vessels after a Serious Marine Incident
04-1998 06Apr1998 Drug and Alcohol Testing
08-1997 13Aug1997 Testing of Liferaft Hydrostatic Release
05-1997 30May1997 Transfer of Excess Fuel from Crew Boats
11-1995 20Nov1995 Eighth District Drug and Alcohol Policy