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Marine Safety Center Tonnage Publications

Marine Safety Center Technical Notes (MTNs)


  • MTN 01-99 CH-7 - Tonnage Technical Policy
  • MTN 01-98 CH-11 - Tonnage Administrative Policy
  • Navigation and Vessel Inspection Circulars (NVICs)


  • NVIC 11-93 CH-3- Applicability of Tonnage Measurement Systems to U.S. Flag Vessels
  • IMO Tonnage Rules and Interpretations (TM Convention)


  • TM Convention - Draft Text Version (With Figures)
  • TM.5/Circ.5 - Draft Text Version
  • Marine Safety Center Tonnage Guides


  • Tonnage Guide 1 - Simplified Measurement
  • Tonnage Guide 2 - Measurement of Navy and Coast Guard Vessels
  • Tonnage Guide 3 - Tonnage Measurement Records
  • Tonnage Guide 4 - Registered Dimensions Under Formal Systems
  • Miscellaneous Tonnage Documents


  • Warship Application





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    Last Modified 4/8/2014