33 C.F.R. § 401.10 Mooring lines.
Title 33 - Navigation and Navigable Waters
(a) Mooring lines shall: (1) Be of a uniform thickness throughout their length; (2) Have a diameter not greater than 28mm; (3) Be fitted with a hand spliced eye or Flemish type mechanical spliced eye not less than 2.4 m long; (4) Have sufficient strength to check the vessel; and (5) Be arranged so that they may be led to either side of the vessel as required. (6) Be certified and a test certificate for each mooring line shall be available on board for inspection. (b) Unless otherwise permitted by an officer, only wire rope mooring lines with a breaking strength that complies with the minimum specifications set out in the table in this section shall be used for securing a vessel in lock chambers. (c) Synthetic lines may be used for mooring at approach walls, tie-up walls and docks within the Seaway. (d) Notwithstanding paragraphs (a) through (c) of this section, nylon line is not permitted. (68 Stat. 93–96, 33 U.S.C. 981–990, as amended and sec. 4, 5, 6, 7, 8, 12 and 13 of sec. 2 of Pub. L. 95–474, 92 Stat. 1471) [39 FR 10900, Mar. 22, 1974, as amended at 47 FR 51121, Nov. 12, 1982; 48 FR 20691, May 9, 1983; 48 FR 22545, May 19, 1983; 61 FR 19551, May 2, 1996; 65 FR 52913, Aug. 31, 2000; 70 FR 12970, Mar. 17, 2005]
Title 33: Navigation and Navigable Waters
PART 401—SEAWAY REGULATIONS AND RULES
Subpart A—Regulations
Condition of Vessels
§ 401.10 Mooring lines.
Table------------------------------------------------------------------------ Length of Overall length of vessels mooring lines Breaking (m) strength (M/T)------------------------------------------------------------------------40 m or more but not more than 60 m... 110 10More than 60 m but not more than 90 m. 110 15More than 90 m but not more than 120 m 110 20More than 120 m but not more than 180 110 28 m....................................More than 180 m but not more than 110 35 222.5 m..............................------------------------------------------------------------------------
