Why must ventilation to a fire-affected space be carefully controlled rather than simply opened up to clear smoke?

A. Ventilation control has no real safety implications and opening any available vent or door is always beneficial

B. Introducing fresh air to a fire that is oxygen-starved (smouldering, ventilation-limited) can cause a sudden, dangerous flare-up or even a backdraft/flashover — ventilation must be controlled and coordinated with the fire-fighting team's readiness, not opened reflexively to "clear the smoke" without considering this risk

C. Backdraft and flashover are theoretical risks that have never actually occurred aboard real vessels

D. Ventilation should always be maximised immediately regardless of the fire's current behaviour or oxygen state

A. AFF and basic fire fighting cover identical content, simply repeated at greater length

B. AFF is required for every single seafarer regardless of muster list role, with no distinction from basic training

C. Basic training covers initial detection, raising the alarm, and using a portable extinguisher on a small incipient fire, while AFF covers organising and leading a coordinated fire-fighting response — including breathing apparatus (BA) entry, ventilation control, boundary cooling, and command of a fire party — required for designated officers and fire team members

D. AFF only applies to passenger vessels and has no relevance to cargo ships

A. Air supply checks are only relevant after the team has already entered the affected space

B. BA entry teams should enter without informing the bridge or control point, to avoid causing alarm

C. No formal entry control or time logging is necessary as long as BA wearers feel confident about their own air supply

D. Each BA wearer's cylinder pressure/air supply duration, the team's entry time, an agreed maximum duration before mandatory withdrawal regardless of air remaining (to allow safety margin for the exit), and a clear communication and tally system so the bridge/control point always knows who is inside and for how long