---
kind: "section"
citation: "46 C.F.R. § 181.310"
title: "46"
number: "181.310"
heading: "Fire main and hydrants."
url: "https://uscodex.org/cfr/46/181.310"
---

# §181.310. Fire main and hydrants.

- (a) A vessel that has a power driven fire pump must have a sufficient number of fire hydrants to reach any part of the vessel using a single length of firehose.
- (b) Piping, valves, and fittings in a fire main system must comply with [subpart G](/cfr/46/subpartG.md), [part 182](/cfr/46/part182.md), of this chapter.
- (c) Each fire hydrant must have a valve installed to allow the firehose to be removed while the fire main is under pressure.
- (d) Spanner wrenches must be provided where a 40 millimeter (1.5 inch) diameter firehose is required by [§ 181.320(b)](/cfr/46/181.320.md?p=b). Existing vessels as of July 22, 2016 have 180 days to comply with this requirement.

## Notes

### Amendments

[CGD 85-080, 61 FR 982, Jan. 10, 1996, as amended at 62 FR 51358, Sept. 30, 1997; USCG-2012-0196, 81 FR 48299, July 22, 2016]

### Authority

Authority: 46 U.S.C. 2103, 3306; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; DHS Delegation 00170.1, Revision No. 01.4.

### Source

Source: CGD 85-080, 61 FR 982, Jan. 10, 1996, unless otherwise noted.

### Amendments

[CGD 85-080, 61 FR 982, Jan. 10, 1996, as amended at 62 FR 51358, Sept. 30, 1997; USCG-2012-0196, 81 FR 48299, July 22, 2016]