Department for Transport

Marine Guidance Notes

The following Marine Guidance Notes (MGNs) are specifically related to technical information for ships.  Click on document number to view each document.  Please note, some documents have subsequent amending documents, please click on each link separately.

Click here for the entire list of Marine Guidance Notes.

MGN 12 (F) &

Amendment 1

Fishing Vessels in submarine exercise areas
MGN 20 (M+F) Implementation of EC Directive 89/391: Merchant Shipping & Fishing Vessels (Health & Safety at Work) Regulations 1997
MGN 21 (M) Ro-Ro Ships - The Carriage of Dangerous Goods in Ships with Ro-Ro Cargo Spaces
MGN 32 (M) Amendments to the “Survey of Life-Saving Appliances Volume 1, Instructions for the guidance of surveyors testing of life-saving appliances”, resulting from the Marine Accident Investigation Branch report on the “Pride of Hampshire"
MGN 33 (M+F) Sewage systems on ships: associated hazards, installation and maintenance
MGN 34 (M+F) Lifeboat Engines and other Compression Ignition Engines used in an EmergencyLifejackets carried on Passenger Ships
MGN 35 (M+F) Accidents when using Power Operated Watertight Doors
MGN 36 (M) Document of Compliance for Ships Carrying Dangerous Goods in Package or Dry Bulk Form
MGN 37 (M) Merchant Shipping (Dangerous Goods and Marine Pollutants) Regulations 1997
MGN 38 (M+F) as amended Contamination of Ships' Air Conditioning Systems by Legionella Bacteria
MGN 52 (M+F) Testing of Emergency Sources of Electrical Power
MGN 59 (M) Special Requirements for Transport of Heated Liquids & Powdery or Granulated Materials in Portable Tanks
MGN 60 (M) Code of Safe Practive for Solid Bulk Cargoes (BC Code): 1996 Amendment.  Carriage of Coal Cargoes
MGN 71 (M) Musters, drills, on-board training and instructions, and Decision Support Systems
MGN 76 (M) Lifejackets carried on Passenger Ships
MGN 77 (M+F) & Amendment 1 Instructions for Action in Survival Craft
MGN 78 (M+F) Launching Crews for Lifeboats, Rescue Boats, Class C Boats, Inflatable Boats and Other boats
MGN 79 (M+F) Safety Equipment and Pollution Prevention Equipment Carried in Excess of Statutory Requirements
MGN 81 (M+F) Guidelines for the Control and Managment of Ships' Ballast Water to Minimise the Transfer of Harmful Aquatic Organisms and Pathogens
MGN 83 (M) & Amendment 1 Guidelines and Specifications for Hyperbaric Evacuation Systems
MGN 86 (M) Recommendations on the Safe Use of Pesticides in Ships
MGN 90 (M+F) Implementation of EC Directive 90/269/EC Merchant Shipping and Fishing Vessels (Manual Handling Operations) Regulations 1998
MGN 105 (M+F) Use and Fitting of Retro-Reflective Material on Life-Saving Appliances
MGN 106 (M) Natural & Synthetic Fibre Cordage for Lifesaving Appliances
MGN 107 (M) Merchant Shipping (Carriage of Cargoes) Regulations 1999
MGN 108 (M) Hull Stress Monitoring Systems
MGN 127 (M+F) Means of Recovering Casualties from the Sea When Involved in Ship to Ship Personnel Transfers
MGN 132 (M+F) Electrical Equipment, Maintenance and Incidents
MGN 137 (M+F) Look-out During Periods of Darkness and Restricted Visibility
MGN 141 (M) Equivalent Arrangements for the Carriage of Man-Overboard Smoke Signals and Parachute Flares on Certain Class VI Passenger Vessels
MGN 142 (M+F) MARPOL 73/78 - ANNEX VI: Control of Emission of Nitrogen Oxides (NOx) from Marine Diesel Engines
MGN 144 (M) The Merchant Shipping (Additional safety Measures for Bulk Carriers) Regulations 1999 (SI 1999/1644)
MGN 145 (M) Unsafe Shipments of Gas Cylinders in Freight Containers
MGN 146 (M) The Carriage of Package Cargo and Cargo Units
MGN 153 (M+F) Complinace with Mandatory Ship Reporting Systems
MGN 157 (M) Safety of Personnel During Container Securing Operations and while Working at Corrugated Bulkheads in General Cargo Ships
MGN 158 (M) Safety Management Code For Domestic Passenger Ships of Classes III – VI (A)
MGN 165 (M) Fishing vessels - the risk of flooding
MGN 168 (M+F) The Marking of Seismic Streamers
MGN 171 (M) Mandatory Surveys for Ro-Ro and High Speed Passenger Craft
MGN 176 (M) Merchant Shipping (Live Saving Appliances) (Amendment) Regulations 2001
MGN 177 (M+F) Accidents Involving Electrical Test Equipment
MGN 178 (M+F) Market Surveillance of Marine Equipment
MGN 189 (F) Fishing vessels - Escape routes
MGN 190 (F) Fishing vessels - Premature failure of Copper Pipes in Engine Room Cooling Water Systems
MGN 191 (M+F) Use of Halon for Fire Extinguishing on Board Ships
MGN 197 (M+F) Implementation of Council Directive 96/29 EURATOM
MGN 198 (M) Safety at Solid Bulk Cargo Terminals
MGN 199 (M) Dangers of Interaction
MGN 210 (M) Advice on the Dangers of flooding Forward Compartments
MGN 215 (M+F) New Carriage Requirements for Emergency Escape Breathing Devices
MGN 217 (M) In-Water Surveys
MGN 218 (M) Thames Safety Inquiry Recommendation 27.2 Standards for New and Existing Ships
MGN 223 (M) Carriage of Coconut Oil and Other Vegetable Oils as Cargo in Tanks
MGN 224 (F) Guidance to Operators on the Code of Safe Working Practice for the Construction and Use of 15m length overall (LOA) to Less than 24m registered length (L) Fishing Vessels
MGN 231 (M+F) Shipboard Pollution Emergency Plans: Guidance on their Development and Approval
MGN 238 (M+F) Vessel Traffic Services (VTS) and Port Information in the United Kingdom
MGN 239 (M+F) Vessel Traffic Services (VTS) and Port Information, Responsibilities of the UK Competent Authority, Statutory Harbour Authorities and VTS Authorities
MGN 240 (M+F) Assessment of the need for Vessel Traffic Services (VTS) or Port Information
MGN 242 (M+F) Standard Format and Procedures for Ship Reporting, Including Reporting Incidents Involving Dangerous Goods, Marine Pollutants, Other Harmful Substances or Safety
MGN 245 (M) Inspectionof Shell Loading Doors on Ro-Ro Ferries
MGN 248 (M) Safety Preparations Prior to Machinery Maintenance
MGN 254 (M+F) Guidance to Users of Inflatable Lifejackets
MGN 258 (M+F) Decommissioning of Halon Systems
MGN 265 (F) Fishing Vessels: The Hazards Associated with Trawling, Including Beam Trawling and Scallop Dredging
MGN 266 (F) Guidance on the Interpretation of SOLAS Chapter Five for Fishing Vessels
MGN 267 (F) Location and Stowage of Liferafts and Emergency Positioning Radio Beacons (EPIRBs) on UK Registered Fishing Vessels
MGN 271 (M) The Protection of Windows and Side Scuttles of Passenger Ships by Deadlights and Storm Covers
MGN 272 (M) Voyage Data Recorder's (VDRS) - Performance Testing
MGN 273 (M) Operational Issues relating to Marine Evacuation Systems
MGN 276 (M+F) Fire Protection - Maintenance of Portable Fire Extinguishers
MGN 280 (M) Small Vessels in Commercial Use for Sport or Pleasure, Workboats and Pilot Boats – Alternative Construction Standards
MGN 281 (F) & Annex 1 Fishing Vessels Freeboard and Stability Information Booklet - Recommended Format
MGN 282 (M) Dangerous Goods - Guidance in the Carriage of Packages Dangerous Goods on Offshore Supply Vessels
MGN 283 (M) Dangerous Goods - Guidance on the Back Loading of Contaminated Bulk Liquids from Offshore Installations to Offshore Supply/Support Vessels
MGN 284 (M+F) Recommendations for Ships Carrying Fumigated Bulk Carriers
MGN 285 (M+F) Electronic Charts - The Use of Risk Assessment Methodology When Operating ECDIS in the RASTER Chart Display System
MGN 287 (M+F) Disposal Of Out of Date Pyrotechnics
MGN 291 (F) Fire Detection and Alarm Systems on Fishing Vessels
MGN 293 (M+F) Alternative Arrangements for Meeting Paper Chart Carriage Requirements on MCA Code Vessels Under 24 Metres in Length and Fishing Vessels Under 24 Metres in Length
MGN 294 (M+F) Use of GMDSS Equipment in General Communications
MGN 297 (M) The Carriage of Defibrillators on Ships
MGN 299 (M+F) Interference with Safe Navigation Through Inappropriate Use of Mobile Phones
MGN 301 (M+F) Manoeuvring Information on Board Ships
MGN 304 (M+F) Shore-to-Ship Communications During a Distress
MGN 305 (M+F) Maritime Safety and the Barring of INMARSAT Ship Earth Station Procedures
MGN 306 (M) Designing and Operating Smaller Passenger Vessels: Guidance on Meeting the Needs of Persons with Reduced Mobility
MGN 308 (M+F) Mooring, Towing Or Hauling Equipment On All Vessels - Safe Installation And Safe Operation
MGN 309 (F) Fishing Vessels – The Dangers of Enclosed Spaces
MGN 310 (F) Fishing Vessels: Risk of Fire and Explosion from Gas Welding and Burning
MGN 311 (F) Working and Protective Gear for Fishermen
MGN 312 (F) Use of Liquid Petroleum Gas (LPG) and Diesel Fuelled Appliances on Fishing Vessels
MGN 313 (F) Keeping a Safe Navigational Watch on Fishing Vessels
MGN 314 (F) Wheelhouse visibility onboard Fishing Vessels
MGN 315 (M) Keeping a Safe Navigational Watch on Merchant Vessels
MGN 316 (F) Re-applying Paints, Varnishes and Other Finishes to Interior Surfaces
MGN 319 (M+F) Acceptance of Electronic Chart Plotting Systems for Fishing Vessels Under 24 Metres and Small Vessels in Commercial Use (Code Boats) up to 24 Metres Load Line Length
MGN 321 (M) AIS on Double-Ended Passenger Ferries
MGN 322 (M+F) Ship Survey Standards
MGN 323 (M+F) Explosives Picked Up at Sea
MGN 324 (M+F) & Correction Radio: Operational Guidance on the Use of VHF Radio and Automatic Identification Systems (AIS) at Sea
MGN 325 (M) Helicopter Assistance at Sea
MGN 327 (M) Research Project 502: High-Speed Craft Dynamic Stability in Following & Quartering Seas - Design Guidance
MGN 328 (M) Research Project 502: High-Speed Craft Dynamic Stability in Following & Quartering Seas - Operational Guidance
MGN 329 (M) Lifejackets “Infant and Oversized Passengers"
MGN 330 (M+F) Radio Aerial Lead-ins
MGN 331 (M+F) Merchant Shipping and Fishing Vessels (Provision and Use Of Work Equipment) Regulations 2006
MGN 332 (M+F) Merchant Shipping and Fishing Vessels (Lifting Operations and Lifting Equipment) Regulations 2006
MGN 335 (M) Bulk Carriers: Guidelines On Early Assessment Of Hull Damage And Need For Abandonment
MGN 337 (M+F) Provision of Safe Means of Access to Fishing and Other Small Vessels
MGN 338 (M) Fire at Sea: Risk Assessment for the Maritime Incident Response Group
MGN 340 (M) International Maritime Dangerous Goods (IMDG) Code and Cargoes Carried in Cargo Transport Units
MGN 341 (M) Ro-Ro Ships Vehicle Decks - Accidents to Personnel, Passenger Access and the Carriage of Motor Vehicles
MGN 342 (M) Guidance on the Carriage of Dangerous Goods in Limited Quantities Intended for Retail Sale on UK Domestic Ferries
MGN 343 (M+F) Hydrostatic Release Units (HRU) - Stowage and Float Free Arrangements for Inflatable Liferafts
MGN 344 (M) Observations and Recommendations arising from a Series of Domestic Passenger Vessel Evacuation Exercises
MGN 345 (M) Alternative Compliance Scheme
MGN 347 (M) Carriage of Passengers Onboard for which Certificates State a Limiting Number of Passengers
MGN 348 (F) Declaration of Maximum Continuous Engine Power (MCEP)
MGN 349 (M+F) Carriage and Use of Radar Reflectors on Small Vessels
MGN 350 (M+F) MCA Requirements for Companies Offering Shore-Based Maintenance of Radio
MGN 352 (M+F) Merchant Shipping and Fishing Vessels (Control of Noise at Work) Regulations 2007
MGN 353 (M+F) Merchant Shipping and Fishing Vessels (Control of Vibration at Work) Regulations 2007
MGN 354 (M+F) Fishing and Small Vessels - Safe Operation of Fixed CO2 Gas Fire Extinguishing Systems
MGN 355 (M) Periodic Inspection, Testing and Maintenance of Fixed Bulk Dry Powder Fire Extinguishing Systems
MGN 356 (M+F) Merchant Shipping and Fishing Vessels (Health and Safety at Work) (Carcinogens and Mutagens) Regulations 2007
MGN 357 (M+F) Night-time Lookout - Photochromic Lenses and Dark Adaption
MGN 358 (M+F) Consolidated European Reporting System (CERS) Reporting Requirements in Respect of :- Port Waste Infringements and Bulk Carrier Infringements
MGN 359 (M) Guidance on the relevant edition of the BS 84 “Code of Practice for Installation of Electrical and Electronic Equipment in Ships” issued by the British Standards Institution, as applied to ships according to their date of build
MGN 360 (M+F) Navigation: Implementation of Changes to Routeing Measures in Electronic Navigational Charts (ENCs)
MGN 361 (M+F) GMDSS: Termination of the 121.5/243MHz Initial Emergency Alerting Service
MGN 362 (M+F) Servicing of Inflatable Liferafts, Inflatable Boats, Rescue Boats, Fast Rescue Boats, Inflatable Lifejackets and Hydrostatic Release Units
MGN 363 (M+F) The Control and Management of Ships' Ballast Water and Sediments
MGN 364 (M+F) Navigation: Traffic Separation Schemes - Application of Rule 10 and Navigation in the Dover Strait
MGN 366 (M+F) Off-Shore Pirate Broadcasting
MGN 367 (M) Guidelines for the Approval of Fixed Fire Detention & Fire Alarm Systems for Cabin Balconies
MGN 368 (M) Amendments to the Revised Guidelines for the Approval of Equivalent Water-Based Fire-Extinguishing Systems for Machinery Spaces & Cargo Pump-Rooms
MGN 369 (M+F) Navigation: Navigation in Restricted Visibility
MGN 371 (M+F) Offshore Renewable Energy Installations (OREIs) - Guidance on UK Navigational Practice, Safety and Emergency Response Issues
MGN 372 (M+F) Offshore Renewable Energy Installations (OREIs): Guidance to Mariners Operating in the Vicinity of UK OREIs
MGN 374 (M+F) Periodic Inspection & Testing of Seamless Steel Pressurised Gas Cylinders
MGN 375 (M+F) Navigation: Maritime Safety Information (MSI)
MGN 378 (M+F) Merchant Shipping and Fishing Vessels (Provision and Use of Work Equipment) (Amendment) Regulations 2008 and Merchant Shipping and Fishing Vessels (Lifting Operations and Lifting Equipment) (Amendment) Regulations 2008
MGN 379 (M+F) Navigastion: Use of Electronic Nagivation Aids
MGN 381 (M+F) Survey and Certification Requirements for the Merchant Shipping (Prevention of Air Pollution from Ships) Regulations 2008
MGN 382 (M) Fire Protection of Balconies & Other External Areas on Passenger Ships
MGN 383 (M+F) US Clean Water Act
MGN 384 (M+F) Training in the Maintenance of Electronic Navigational Equipment
MGN 385 (M+F) Guidance on the Merchant Shipping (Prevention of Pollution by Sewage and Garbage from Ships) Regulations 2008
MGN 386 (M+F) Survey and Certification Requirements for the Merchant Shipping (Prevention of Air Pollution from Ships) Regulations 2008 - Additional Guidance
MGN 387 (M+F) Guidance on the Merchant Shipping and Fishing Vessels (Port Waste Reception Facilities) Regulations 2003 and Amendments
MGN 388 (M+F) Lifeboats: Fitting of 'Fall Preventer Devices' to reduce the danger of accidental on-load hook release
MGN 389 (M+F) Operating Instructions and Signage for Fixed Gas Fire-Extinguishing Systems
MGN 390 (M) Construction Standards for Offshore Support Vessels and Other Special Service Ships
MGN 392 (M+F) Radio Survey Service: Authorisation
MGN 393 (M+F) Navigation Light Units: Maintenance and the Use of New Technology Light Sources, such as Light Emitting Diodes (LEDs), as Navigation Lights on SOLAS and non-SOLAS Vessels
MGN 394 (M+F) Local Supplier of Fuel Oil Registration