---
kind: "section"
citation: "46 C.F.R. § 161.013-9"
title: "46"
number: "161.013-9"
heading: "Independent power source."
url: "https://uscodex.org/cfr/46/161.013-9"
---

# §161.013-9. Independent power source.

- (a) Each independent power source must be capable of powering the light so that it meets the requirements of [§ 161.013-3(a)(1)](/cfr/46/161.013-3.md?p=a-1) and emits a recognizable flash characteristic of the International Morse Code for S-O-S at a rate of between 3 and 5 times per minute after six hours of continuous display of the signal.
- (b) If the independent power source is rechargeable, it must have a waterproof recharger designed for marine use.
- (c) If the independent power source requires external water to form an electrolyte, it must operate in sea water and fresh water.

## Notes

### Source

Source: CGD 76-183a, 44 FR 73054, Dec. 17, 1979, unless otherwise noted.

### Authority

Authority: 46 U.S.C. 3306, 3703, 4302; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; DHS Delegation 00170.1, Revision No. 01.4.