Section 67.107 - System of measurement; evidence(a) The gross and net tonnage and dimensions of a vessel for purposes of this part are determined in accordance with 46 CFR part 69.(b) A certificate of measurement issued by an authorized official is the only acceptable evidence of the gross and net tonnage of a vessel measured in accordance with subpart B, C, or D of 46 CFR part 69 . A certificate of measurement is not issued for vessels measured under subpart E of 46 CFR part 69 since the gross and net tonnage are determined as part of the documentation process.CGD 89-007, CGD 89-007a, 58 FR 60266, Nov. 15, 1003, as amended by USCG-2001-10224, 66 FR 48620 , Sept. 21, 2001