33 CFR Part 401, Subpart A, Appendix I to Subpart A of Part 401 - Vessel Dimensions

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View PDF at GPO Pt. 401, Subpt. A, App. I
Appendix I to Subpart A of Part 401—Vessel Dimensions
Structures are located at a number of Seaway locks which, when fully raised, overhang the lock wall at a given point, thereby limiting:
(a) The height of a vessel above the water line measured at the vessel's side; and
(b) The height of other structures that are located near the sides of the vessel, such as derricks, crosstrees, antennas, etc.
The following block diagram shows the limits beyond which a vessel's hull or superstructure cannot extend when the vessel is alongside the lock wall.
The limits in the block diagram are based on vessels with a maximum allowable beam of 23.2 m. For vessels that have a beam width less than this and that have dimensions exceeding the limits of the block diagram (measured with the vessel alongside the lock wall), a special permission to transit must be obtained. (Accurate measurements may be required before such permission is granted).
Caution: Masters must take into account the ballast draft of the vessel when verifying the maximum permissible dimensions.
(68 Stat. 93-96, 33 U.S.C. 981-990, as amended and secs. 4, 5, 6, 7, 8, 12 and 13 ofsec. 2 ofPub. L. 95-474, 92 Stat. 1471)
[45 FR 52381, Aug. 7, 1980, as amended at 49 FR 30936, Aug. 2, 1984; 61 FR 19552, May 2, 1996]

Title 33 published on 2013-07-01

The following are only the Rules published in the Federal Register after the published date of Title 33.

For a complete list of all Rules, Proposed Rules, and Notices view the Rulemaking tab.

  • 2014-03-06; vol. 79 # 44 - Thursday, March 6, 2014
    1. 79 FR 12658 - Seaway Regulations and Rules: Periodic Update, Various Categories
      GPO FDSys XML | Text
      DEPARTMENT OF TRANSPORATION, Saint Lawrence Seaway Development Corporation
      Final rule.
      The rule will become effective on March 31, 2014.
      33 CFR Part 401

Title 33 published on 2013-07-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 33 CFR 401 after this date.

  • 2014-03-06; vol. 79 # 44 - Thursday, March 6, 2014
    1. 79 FR 12658 - Seaway Regulations and Rules: Periodic Update, Various Categories
      GPO FDSys XML | Text
      DEPARTMENT OF TRANSPORATION, Saint Lawrence Seaway Development Corporation
      Final rule.
      The rule will become effective on March 31, 2014.
      33 CFR Part 401