CFR › Title 46 › Part 97 › §97.37-6046 CFR §97.37-60Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkQuick-acting Class I watertight doors fitted in accordance with the requirements in § 170.255(d) of this chapter must be marked “KEEP THIS DOOR CLOSED”.