# 33 CFR § 164.37: Equipment: Vessels of 10,000 gross tons or more

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-33-164.37

## Section

- **Citation:** 33 CFR § 164.37
- **Heading:** Equipment: Vessels of 10,000 gross tons or more
- **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 P—PORTS AND WATERWAYS SAFETY > PART 164—NAVIGATION SAFETY REGULATIONS

## Text

(a) Each vessel of 10,000 gross tons or more must have, in addition to the radar system under § 164.35(a), a second marine radar system that operates independently of the first.
Note:
Independent operation means two completely separate systems, from separate branch power supply circuits or distribution panels to antennas, so that failure of any component of one system will not render the other system inoperative.
(b) On each tanker of 10,000 gross tons or more that is subject to 46 U.S.C. 3708, the dual radar system required by this part must have a short range capability and a long range capability; and each radar must have true north features consisting of a display that is stabilized in azimuth.
(Titles I and II, 86 Stat. 426, 427 (46 U.S.C. 391(a), 70004; 49 CFR 1.46(n)(4))
[CGD 77-016, 43 FR 32112, July 24, 1978, as amended by CGD 79-033, 44 FR 26741, May 7, 1979; CGD 79-033, 47 FR 34389, Aug. 9, 1982; USCG-1998-3799, 63 FR 35532, June 30, 1998; USCG-2020-0304, 85 FR 58280, Sept. 18, 2020]

## Nearby sections

- [33 CFR § 162.1 § 162.1 General.](https://www.frixlaw.com/law-library/statutes/ecfr-33-162.1.md)
- [33 CFR § 162.5 § 162.5 Definitions.](https://www.frixlaw.com/law-library/statutes/ecfr-33-162.5.md)
- [33 CFR § 162.15 § 162.15 Manhasset Bay, N.Y.; seaplane restricted area.](https://www.frixlaw.com/law-library/statutes/ecfr-33-162.15.md)
- [33 CFR § 162.20 § 162.20 Flushing Bay near La Guardia Airport, Flushing, N.Y.; restricted area.](https://www.frixlaw.com/law-library/statutes/ecfr-33-162.20.md)
- [33 CFR § 162.30 § 162.30 Channel of Tuckerton Creek, N.J.; navigation.](https://www.frixlaw.com/law-library/statutes/ecfr-33-162.30.md)
- [33 CFR § 162.35 § 162.35 Channel of Christina River, Del.; navigation.](https://www.frixlaw.com/law-library/statutes/ecfr-33-162.35.md)
- [33 CFR § 162.40 § 162.40 Inland waterway from Delaware River to Chesapeake Bay, Del. and Md. (Chesapeake and Delaware Canal).](https://www.frixlaw.com/law-library/statutes/ecfr-33-162.40.md)
- [33 CFR § 162.65 § 162.65 All waterways tributary to the Atlantic Ocean south of Chesapeake Bay and all waterways tributary to the Gulf of America east and south of St. Marks, Fla.](https://www.frixlaw.com/law-library/statutes/ecfr-33-162.65.md)
- [33 CFR § 162.75 § 162.75 All waterways tributary to the Gulf of America (except the Mississippi River, its tributaries, South and Southwest Passes and Atchafalaya River) from St. Marks, Fla., to the Rio Grande.](https://www.frixlaw.com/law-library/statutes/ecfr-33-162.75.md)
- [33 CFR § 162.80 § 162.80 Mississippi River below mouth of Ohio River, including South and Southwest passes.](https://www.frixlaw.com/law-library/statutes/ecfr-33-162.80.md)
- [33 CFR § 162.100 § 162.100 Ohio River at Louisville, KY.](https://www.frixlaw.com/law-library/statutes/ecfr-33-162.100.md)
- [33 CFR § 162.105 § 162.105 Missouri River; administration and navigation.](https://www.frixlaw.com/law-library/statutes/ecfr-33-162.105.md)
- [33 CFR § 162.115 § 162.115 Keweenaw Waterway, Mich.](https://www.frixlaw.com/law-library/statutes/ecfr-33-162.115.md)
- [33 CFR § 162.117 § 162.117 St. Marys River, Sault Ste. Marie, Michigan.](https://www.frixlaw.com/law-library/statutes/ecfr-33-162.117.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/ecfr-33-164.37. Check the current official text before relying on it. Not legal advice.