# 33 CFR § 157.05: Performing calculations for this part

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-33-157.05

## Section

- **Citation:** 33 CFR § 157.05
- **Heading:** Performing calculations for this part
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** September 22, 2026
- **Source:** Publisher's official text
- **Location:** Title 33—Navigation and Navigable Waters > CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY > SUBCHAPTER O—POLLUTION > PART 157—RULES FOR THE PROTECTION OF THE MARINE ENVIRONMENT RELATING TO TANK VESSELS CARRYING OIL IN BULK > Subpart A—General

## Text

In this part, unless the context requires otherwise:
(a) Formulas are in the International System of Units (SI);
(b) Values used in those formulas must be in the International System of Units; and
(c) Forward and after perpendiculars are located at the forward end and at the after end of the length. The forward perpendicular coincides with the foreside of the stem on the waterline on which the length of the vessel is measured.

## Nearby sections

- [33 CFR § 157.01 § 157.01 Applicability.](https://www.frixlaw.com/law-library/statutes/ecfr-33-157.01.md)
- [33 CFR § 157.02 § 157.02 Incorporation by reference: Where can I get a copy of the publications mentioned in this part?](https://www.frixlaw.com/law-library/statutes/ecfr-33-157.02.md)
- [33 CFR § 157.03 § 157.03 Definitions.](https://www.frixlaw.com/law-library/statutes/ecfr-33-157.03.md)
- [33 CFR § 157.04 § 157.04 Authorization of classification societies.](https://www.frixlaw.com/law-library/statutes/ecfr-33-157.04.md)
- [33 CFR § 157.05 § 157.05 Performing calculations for this part.](https://www.frixlaw.com/law-library/statutes/ecfr-33-157.05.md)
- [33 CFR § 157.06 § 157.06 Appeals.](https://www.frixlaw.com/law-library/statutes/ecfr-33-157.06.md)
- [33 CFR § 157.07 § 157.07 Equivalents.](https://www.frixlaw.com/law-library/statutes/ecfr-33-157.07.md)
- [33 CFR § 157.08 § 157.08 Applicability of subpart B.](https://www.frixlaw.com/law-library/statutes/ecfr-33-157.08.md)
- [33 CFR § 157.09 § 157.09 Segregated ballast.](https://www.frixlaw.com/law-library/statutes/ecfr-33-157.09.md)
- [33 CFR § 157.10 § 157.10 Segregated ballast tanks and crude oil washing systems for certain new vessels.](https://www.frixlaw.com/law-library/statutes/ecfr-33-157.10.md)
- [33 CFR § 157.10a § 157.10a Segregated ballast tanks, crude oil washing systems, and dedicated clean ballast tanks for certain new and existing vessels of 40,000 DWT or more.](https://www.frixlaw.com/law-library/statutes/ecfr-33-157.10a.md)
- [33 CFR § 157.10b § 157.10b Segregated ballast tanks, dedicated clean ballast tanks, and special ballast arrangements for tank vessels transporting Outer Continental Shelf oil.](https://www.frixlaw.com/law-library/statutes/ecfr-33-157.10b.md)
- [33 CFR § 157.10c § 157.10c Segregated ballast tanks, crude oil washing systems, and dedicated clean ballast tanks for certain new and existing tankships of 20,000 to 40,000 DWT.](https://www.frixlaw.com/law-library/statutes/ecfr-33-157.10c.md)
- [33 CFR § 157.10d § 157.10d Double hulls on tank vessels.](https://www.frixlaw.com/law-library/statutes/ecfr-33-157.10d.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/ecfr-33-157.05. Check the current official text before relying on it. Not legal advice.