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CFR > Title 46 - Shipping > CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY > SUBCHAPTER G—DOCUMENTATION AND MEASUREMENT OF VESSELS (parts 66 to 69) > PART 69—MEASUREMENT OF VESSELS > SUBPART B—Convention Measurement System (§69.51 to §69.75) > 69.57—Gross tonnage.
69.57—Gross tonnage.
Gross tonnage (GT) is determined by the following formula GT=K1 V, in which V=total volume of all enclosed spaces in cubic meters and K1 =0.2 0.02 log10 V.