StacksVerified U.S. regulatory reference

46 CFR §143.275

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
There must be an installed or portable bilge pump for emergency dewatering. Any portable pump must have sufficient hose length and pumping capability. All installed bilge piping must have a check/foot valve in each bilge suction that prevents unintended backflooding through bilge piping.