---
kind: "section"
citation: "46 C.F.R. § 42.30-1"
title: "46"
number: "42.30-1"
heading: "Basis."
url: "https://uscodex.org/cfr/46/42.30-1"
---

# §42.30-1. Basis.

- (a) **The zones and areas in this subpart are, in general, based on the following criteria—**
  - (1) **Summer—** not more than 10 percent winds of force 8 Beaufort (34 knots) or more.
  - (2) **Tropical—** not more than 1 percent winds of force 8 Beaufort (34 knots) or more. Not more than one tropical storm in 10 years in an area of 5° square in any 1 separate calendar month.
- (b) **In certain special areas, for practical reasons, some degree of relaxation has been found acceptable.**
- (c) A chart is attached to the International Convention on Load Lines, 1966, which illustrates the zones and areas defined in this Convention and in this subpart.

## Notes

### Amendments

[CGFR 68-60, 33 FR 10068, July 12, 1968, as amended by CGFR 68-126, 34 FR 9016, June 5, 1969]

### Authority

Authority: 46 U.S.C. 5101-5116; Department of Homeland Security Delegation No. 00170.1, Revision No. 01.4; section 42.01-5 also issued under the authority of 44 U.S.C. 3507.

### Amendments

[CGFR 68-60, 33 FR 10068, July 12, 1968, as amended by CGFR 68-126, 34 FR 9016, June 5, 1969]