🔍 Key Concepts

• 33 CFR Part 155 – Oil or Hazardous Material Pollution Prevention Regulations for Vessels • Specific requirements for older vessels (pre-1980 construction) regarding fuel and lube oil tank vents • Difference between portable containers, automatic shutoff nozzles, and fixed containment/enclosed deck areas around vents

💭 Think About

• Which of the choices deals directly with preventing oil from reaching the water if a tank is overfilled or a vent discharges? • Look at the vessel’s build year (1977) and size (over 100 gross tons)—which 33 CFR requirement is triggered by these two facts? • Ask yourself: Which option sounds like a regulatory design/installation requirement on the vessel itself, rather than just a fueling practice or sequence?

✅ Before You Answer

• Verify in 33 CFR Part 155 Subpart B what is required for vessels over 100 gross tons built before 1980 concerning oil and fuel tank vents. • Check whether the regulation talks about portable containers or fixed/enclosed arrangements for catching oil from vents. • Confirm that the requirement mentioned applies during transfer/fueling operations and is tied specifically to pollution prevention from lube oil or fuel tank vents.