46 CFR §45.9

1. (a)For the purposes of the law and regulations prohibiting submergence of load lines (46 U.S.C. 88c; 46 CFR 42.07-10) the marks assigned to vessels holding international load line certificates apply during the following seasons:
   1. (1)Vessels assigned freeboards as new vessels under the International Load Line Convention, 1966—
      1. (i)Winter—November 1 through March 31.
      2. (ii)Summer—April 1 through April 30 and October 1 through October 31.
      3. (iii)Tropical—May 1 through September 30;
   2. (2)Vessels assigned freeboards as existing vessels under the International Load Line Convention, 1966—
      1. (i)Winter—November 1 through March 31;
      2. (ii)Summer—April 1 through April 30 and October 1 through October 31;
      3. (iii)Tropical—September 16 through September 30;
      4. (iv)Tropical Fresh—May 1 through September 15.
2. (b)Except for hopper dredges operating at working freeboards in accordance with subpart C of part 44 of this chapter, the Assigning Authority may not allow for lesser freeboards.