264. Sounding tubes and access openings for fuel oil tanks on cargo vessels are permitted by U.S. regulations to be located in which of the listed spaces?

U.S. regulations prohibit sounding tubes and access openings for fuel oil tanks on cargo vessels from being located in crew lounges, laundries, or washrooms due to fire and fume safety concerns; these openings must be situated in machinery spaces or on open decks to ensure early leak detection and prevent hazards in crew or passenger areas.