---
kind: "section"
citation: "46 C.F.R. § 170.260"
title: "46"
number: "170.260"
heading: "Class 2 doors; permissible locations."
url: "https://uscodex.org/cfr/46/170.260"
---

# §170.260. Class 2 doors; permissible locations.

- (a) **Except as provided in paragraphs (b) and (c) of this section, a Class 2 door is permitted only if—**
  - (1) Its sill is above the deepest load line; and
  - (2) It is not a door described in [§ 170.265(d)](/cfr/46/170.265.md?p=d).
- (b) If passenger spaces are located below the bulkhead deck, Class 2 doors with sills below the deepest load line may be used if—
  - (1) The number of watertight doors located below the deepest load line that are used intermittently during operation of the vessel does not exceed two, and;
  - (2) **The doors provide access to or are within spaces containing machinery.**
- (c) If no passenger spaces are located below the bulkhead deck, Class 2 doors may be used if the number of watertight doors located below the deepest load line that are used intermittently during operation of the vessel does not exceed five.
- (d) In determining whether Class 2 doors are allowed under [paragraph (c)](#c) of this section, the watertight doors at the entrance to shaft tunnels need not be counted. If Class 2 doors are allowed under [paragraph (c)](#c) of this section, the doors at the entrance to shaft tunnels may also be Class 2.

## Notes

### Authority

Authority: 43 U.S.C. 1333; 46 U.S.C. 2103, 3306, 3703; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; Department of Homeland Security Delegation No. 0170.1.

### Source

Source: CGD 79-023, 48 FR 51010, Nov. 4, 1983, unless otherwise noted.