Federal regulations · Through 2026-08-25 · Newer source version available

46 CFR 42.30-5: -5 Northern Winter Seasonal Zones and area.

(a) North Atlantic Winter Seasonal Zones I and II. (1) The North Atlantic Winter Seasonal Zone I lies within the meridian of longitude 50° W. from the coast of Greenland to latitude 45° N.; thence the parallel of latitude 45° N. to longitude 15° W.; thence the meridian of longitude 15° W. to latitude 60° N.; thence the parallel of latitude 60° N. to the Greenwich Meridian, thence this meridian northwards.
(i) Seasonal periods:
Winter: October 16 to April 15.
Summer: April 16 to October 15.
(2) The North Atlantic Winter Seasonal Zone II lies within the meridian of longitude 68°30′ W. from the coast of the United States to latitude 40° N.; thence the rhumb line to the point latitude 36° N., longitude 73° W.; thence the parallel of latitude 36° N. to longitude 25° W.; and thence the rhumb line to Cape Torinana. Excluded from this zone are the North Atlantic Winter Seasonal Zone I and the Baltic Sea bounded by the parallel of the latitude of The Skaw in the Skagerrak.
(i) Seasonal periods:
Winter: November 1 to March 31.
Summer: April 1 to October 31.
(b) North Atlantic Winter Seasonal Area. (1) The boundary of the North Atlantic Winter Seasonal Area is the meridian of longitude 68°30′ W. from the coast of the United States to latitude 40° N.; thence the rhumb line to the southernmost intersection of the meridian of longitude 61° W. with the coast of Canada; and thence the east coasts of Canada and the United States.
(i) Seasonal periods:
(a) For vessels over 328 feet in length:
Winter: December 16 to February 15.
Summer: February 16 to December 15.
(b) For vessels of 328 feet and under in length:
Winter: November 1 to March 31.
Summer: April 1 to October 31.
(c) North Pacific Winter Seasonal Zone. The southern boundary of the North Pacific Winter Seasonal Zone is the parallel of latitude 50° N. from the east coast of the Union of Soviet Socialist Republics, to the west coast of Sakhalin; thence the west coast of Sakhalin to the southern extremity of Cape Kril'on: thence the rhumb line to Wakkanai, Hokkaido, Japan; thence the east and south coasts of Hokkaido to longitude 145° E., thence the meridian of longitude 145° E. to latitude 35° N., thence the parallel of latitude 35° N. to longitude 150° W. and thence the rhumb line to the southern extremity of Dall Island, Alaska.
(1) Seasonal periods:
Winter: October 16 to April 15.
Summer: April 16 to October 15.

Where this section sits in the code

Title 46—Shipping
CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY
SUBCHAPTER E—LOAD LINES
PART 42—DOMESTIC AND FOREIGN VOYAGES BY SEA
Subpart 42.30—Zones, Areas, and Seasonal Periods

(i) Seasonal periods:

Winter: October 16 to April 15.

Summer: April 16 to October 15.

(2) The North Atlantic Winter Seasonal Zone II lies within the meridian of longitude 68°30′ W. from the coast of the United States to latitude 40° N.; thence the rhumb line to the point latitude 36° N., longitude 73° W.; thence the parallel of latitude 36° N. to longitude 25° W.; and thence the rhumb line to Cape Torinana. Excluded from this zone are the North Atlantic Winter Seasonal Zone I and the Baltic Sea bounded by the parallel of the latitude of The Skaw in the Skagerrak.

(i) Seasonal periods:

Winter: November 1 to March 31.

Summer: April 1 to October 31.

(b) North Atlantic Winter Seasonal Area. (1) The boundary of the North Atlantic Winter Seasonal Area is the meridian of longitude 68°30′ W. from the coast of the United States to latitude 40° N.; thence the rhumb line to the southernmost intersection of the meridian of longitude 61° W. with the coast of Canada; and thence the east coasts of Canada and the United States.

(i) Seasonal periods:

(a) For vessels over 328 feet in length:

Winter: December 16 to February 15.

Summer: February 16 to December 15.

(b) For vessels of 328 feet and under in length:

Winter: November 1 to March 31.

Summer: April 1 to October 31.

(c) North Pacific Winter Seasonal Zone. The southern boundary of the North Pacific Winter Seasonal Zone is the parallel of latitude 50° N. from the east coast of the Union of Soviet Socialist Republics, to the west coast of Sakhalin; thence the west coast of Sakhalin to the southern extremity of Cape Kril'on: thence the rhumb line to Wakkanai, Hokkaido, Japan; thence the east and south coasts of Hokkaido to longitude 145° E., thence the meridian of longitude 145° E. to latitude 35° N., thence the parallel of latitude 35° N. to longitude 150° W. and thence the rhumb line to the southern extremity of Dall Island, Alaska.

(1) Seasonal periods:

Winter: October 16 to April 15.

Summer: April 16 to October 15.

Collected 2026-08-27T02:26:22Z. Source file · JSON

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