Safety and Emergency Procedures Flashcards
7 cards from real Tanker Familiarization practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Safety and Emergency Procedures flashcards as text
What is the correct procedure when entering an enclosed cargo tank that has been declared gas-free?
Answer: Use a buddy system and maintain continuous communication with a standby person
IMO and SOLAS require a standby person at the entrance and continuous communication throughout any enclosed-space entry.
A tanker's Muster List (Station Bill) must be posted:
Answer: In conspicuous places throughout the vessel including crew accommodation
SOLAS requires the Muster List to be posted in conspicuous places so every crew member can locate their emergency duties.
Which international signal indicates a vessel is on fire and requires assistance?
Answer: Flag November Charlie (NC)
Flag signal NC (November Charlie) is the international distress signal indicating a vessel is in distress and requires immediate assistance.
During cargo loading on a chemical tanker, an unexpected rise in tank pressure should prompt the officer to:
Answer: Slow or stop loading and investigate the cause before continuing
Unexpected pressure rise can indicate blocked vents, a closed valve, or overfill — all requiring immediate investigation before continuing.
What is the minimum safe oxygen concentration level in a tank atmosphere before crew entry without SCBA?
Answer: 20.8% by volume
IMO guidelines require at least 20.8% oxygen by volume in the atmosphere for a space to be considered safe for entry without breathing apparatus.
On an oil tanker, an Inert Gas System (IGS) is used primarily to:
Answer: Maintain tank atmospheres outside the flammable range by displacing oxygen
IGS introduces inert gas (usually flue gas or nitrogen) into cargo tanks to keep oxygen levels too low to support combustion.
After abandoning a tanker, survivors in a lifeboat should move away from the vessel because:
Answer: Cargo vapors, fire, or explosion may still pose a hazard
A burning or leaking tanker can explode or discharge flammable vapors at the surface, creating lethal hazards for nearby survivors.