---
kind: "section"
citation: "46 C.F.R. § 69.107"
title: "46"
number: "69.107"
heading: "Gross and net register tonnage."
url: "https://uscodex.org/cfr/46/69.107"
---

# §69.107. Gross and net register tonnage.

- (a) The vessel's gross register tonnage is the sum of the following tonnages, less the tonnages of certain spaces exempt under [§ 69.117](/cfr/46/69.117.md):
  - (1) Under-deck tonnage ([§ 69.109](/cfr/46/69.109.md)).
  - (2) Between-deck tonnage ([§ 69.111](/cfr/46/69.111.md)).
  - (3) Superstructure tonnage ([§ 69.113](/cfr/46/69.113.md)).
  - (4) Excess hatchway tonnage ([§ 69.115(c)](/cfr/46/69.115.md?p=c)).
  - (5) Tonnage of framed-in propelling machinery spaces included in calculating gross tonnage ([§ 69.121(d)(1)](/cfr/46/69.121.md?p=d-1)).
- (b) The vessel's net register tonnage is the gross register tonnage less deductions under §§ [69.119](/cfr/46/69.119.md) and [69.121](/cfr/46/69.121.md).
- (c) The authorized measurement organization must issue a U.S. Tonnage Certificate as evidence of a vessel's measurement under this subpart, which must also indicate the vessel's measurement under the Convention Measurement System in subpart B of this part, if applicable. There is no requirement to maintain the U.S. Tonnage Certificate on board the vessel.

## Notes

### Amendments

[CGD 87-015b, 54 FR 37657, Sept. 12, 1989, as amended by USCG-2011-0522, 81 FR 18725, Mar. 31, 2016]

### Authority

Authority: 46 U.S.C. 2301, 14103, 14104; Department of Homeland Security Delegation No. 0170.1.

### Source

Source: CGD 87-015b, 54 FR 37657, Sept. 12, 1989, unless otherwise noted.

### Amendments

[CGD 87-015b, 54 FR 37657, Sept. 12, 1989, as amended by USCG-2011-0522, 81 FR 18725, Mar. 31, 2016]