Prepare for AFF by practicing decisions, not just procedures. For each scenario, state your command role assignments, fire behavior read, ventilation choice, fixed-system coordination, and BA control discipline, then defend each choice and name the observation that would reverse it.
Why AFF Is a Command Course, Not a Bigger Basic Fire Course
AFF builds on basic fire prevention and firefighting by adding organization, leadership, and tactical control of fire parties. Your study goal is to explain and direct operations, not only describe hose and extinguisher techniques.
Compare the two credentials directly when you plan. Basic firefighting centers on individual skills: extinguisher selection, hose handling, escape in smoke. AFF centers on collective action: organizing a fire party, assigning an on-scene leader, controlling breathing apparatus entry, coordinating with the bridge, and deciding when a space is lost. If your notes only restate basic techniques, they do not yet cover the assessed domain.
Turn every procedure you learn into a decision point. For example, 'establish BA control' is a procedure; 'decide how many wearers to commit to an engine room before the fire's extent is known, and what reserves to require' is a decision. When you study, write each topic as a choice with options and consequences. This converts passive review into the reasoning the course trains, and it makes gaps in your understanding obvious immediately.
Reading Fire Behavior Signs: Flashover, Backdraft, and Flameover
Learn to distinguish flashover, backdraft, and flameover by their indicators, because each demands a different response. Confusing them leads to the wrong tactic at the door, where the consequences are immediate.
Flashover is the simultaneous ignition of combustibles in a compartment when gases reach ignition temperature; signs include intense radiant heat, descending smoke layer, and rollover of flames at ceiling level. Backdraft occurs when oxygen-starved combustion suddenly receives air: indicators include dense smoke under pressure, pulsing smoke from gaps, and hot doors with little visible flame. Flameover (rollover) is flame racing across the smoke layer surface itself. These are three distinct events with distinct triggers, so memorize each with its own indicator set rather than as one 'dangerous fire' concept.
Worked scenario: during a patrol you find a closed accommodation cabin door hot to the touch, thick black smoke seeping and pulsing at the frame, and no visible flame. A plausible mistake is treating this as an ordinary smoldering fire, opening the door to improve visibility and attacking directly. The better decision is to treat the indicators as possible backdraft conditions: report immediately, keep the door closed, brief the fire party, and coordinate any opening with a nozzle team in a protected position and a planned air path. The read matters because opening supplies air to a ventilation-limited fire, and the response differs completely from a well-ventilated, flame-visible fire where prompt attack is favored.
| Event | Key indicators | Driving condition | Door and nozzle response |
|---|---|---|---|
| Flashover | Intense radiant heat, descending smoke layer, rollover at ceiling | Heat buildup in a burning, ventilated compartment | Cool gases from outside, avoid overcommitting into a heating room, time the entry |
| Backdraft | Pressurized dense smoke, pulsing at gaps, hot door, little visible flame | Oxygen-starved fire awaiting air | Keep the door closed, report, coordinate any opening with a protected nozzle team |
| Flameover (rollover) | Flame moving across the surface of the smoke layer | Ignitable gases at the smoke boundary | Withdraw or take cover, cool the upper layer, reassess before advancing |
Running the Command Structure: On-Scene Leader, BA Control, and Communications
AFF assesses how you organize the response: who leads on scene, how entries are logged and controlled, and how information flows between bridge, on-scene commander, and fire party.
Study the chain as named roles with distinct duties. The on-scene commander directs the fire party, reports to the bridge, and owns the tactical picture; BA control tracks every wearer's entry time, cylinder state, and task, and controls exit discipline; the bridge coordinates navigation, communications, and muster of passengers and crew. Each role exists because a common failure mode is losing track of who is in the space and for how long. When you study a procedure, ask which role executes it, what that role reports upward, and what information it needs back.
Worked scenario: a fire party enters a machinery space and the second team is sent in shortly afterward. The plausible mistake is adding the second team's details verbally and continuing, assuming the controller 'has it.' The better decision is to stop the flow of tasking until the BA control board reflects both teams: names, cylinder pressures at entry, entry times, and tasks, confirmed back to the sender. This matters because the board is the only shared record of who is inside and how much air remains, and every later decision, such as withdrawal or rescue, depends on it being current. Practice by sketching a control board and narrating two simultaneous entries.
The Ventilation Decision: Opening a Space Without Making Things Worse
Ventilation is a deliberate tactical choice with three states: keep closed, ventilate in a controlled way, or ventilate only after control. Justify each choice from fire behavior, not habit.
Compare the options as a decision, not a rule. Keeping a space closed starves the fire of air and contains smoke, but prolongs heat buildup and obscures assessment. Controlled ventilation, coordinated with an attack team positioned and ready, can clear smoke and improve visibility for the hose party. Uncoordinated opening, done to 'see what is there' or to let smoke drift out, can introduce air to a ventilation-limited fire or push smoke into escape routes and muster areas. The correct choice depends on the fire's stage, compartment boundaries, wind and ship heading, and where people are.
Worked scenario: a galley fire is controlled but heavy smoke fills the adjacent passageway where crew are mustering, and the on-scene leader wants to clear it. The plausible mistake is ordering the nearest portholes and doors open immediately, on the windward side, which channels smoke through the muster area. The better decision is to choose the leeward openings downwind of muster stations, brief the attack team before any opening, and open progressively while monitoring smoke movement. It matters because ventilation steers smoke and fire gases; the same openings that clear a compartment can endanger the routes people depend on. Sketch your own ship's layout and mark safe and dangerous opening points.
| Option | Best when | Main risk | Condition before acting |
|---|---|---|---|
| Keep closed | Fire small or smoldering, space sealed, indicators of backdraft | Heat buildup, delayed assessment | Boundary cooling in place, fire party briefed |
| Controlled ventilation | Attack team ready, fire ventilated, smoke blocking escape routes | Smoke steered into muster areas or air fed to the fire | Team positioned, opening points chosen relative to wind and muster stations |
| Ventilate after control | Fire knocked down, overhaul starting | Residual hot gases and smoldering debris | Visibility needed for overhaul, monitoring of smoke movement arranged |
Coordinating Fixed Systems With Manual Attack: Water Discipline and Boundaries
AFF expects you to combine fixed installations, boundary cooling, and manual attack, and to manage water use so firefighting does not create a second problem for stability.
Treat fixed systems and manual attack as complementary tools with sequencing questions. A fixed smothering system, such as total flooding of a machinery space, depends on the space being sealed and evacuated; manual entry before or during release can defeat it and endanger the team. Boundary cooling protects adjacent compartments and bulkheads from heat conducted through steel. The coordination questions to rehearse are: when to release the fixed system instead of committing a team, how long to allow before any entry, who confirms evacuation and closure, and what the team does at boundaries while the system works.
Water applied in quantity eventually collects, and free surface and added weight on high decks affect a ship's stability and trim. A plausible mistake in a scenario answer is praising an aggressive, indefinite hose operation without noting where the water is going. The better decision includes draining arrangements, rotating teams to limit continuous flow, monitoring for water accumulating on decks, and reporting the situation to the bridge. Practice by narrating a long-duration accommodation fire and listing, at intervals, what you check about water: where it pools, what drains exist, and who you inform. This connects tactics to ship behavior, which is the core of the advanced course.
A Timeline Exercise With a Self-Check Rubric
Run a paper scenario on a ten-minute timeline and log every command decision. Grade yourself against a rubric so you can see whether you command the incident or only react to it.
Exercise: draw a simplified general arrangement of a ship, place a fire in an engine room with two missing crew, and run the scenario aloud in ten one-minute blocks. At each block, write what you order, why, and what you expect to observe next: initial report and alarm, muster and role assignment, first team commit, fixed-system decision, boundary cooling, casualty search, and bridge reports. The value comes from the log; when you read it back, delays and vague orders become visible, such as 'send a team in' with no stated objective, size, or BA control entry.
Rubric to score your log: (1) command roles assigned and communicated within the first two blocks; (2) every BA entry logged with time, pressure, and task, and no unlogged entry; (3) each ventilation or opening decision has a stated reason and an observation that would reverse it; (4) fixed-system release conditioned on confirmed evacuation and closure; (5) casualty search assigned to a specific team, not 'someone'; (6) bridge kept informed at defined intervals; (7) water accumulation and stability mentioned at least once. Score each item yes or no, and rerun the scenario until all seven are yes on a fresh attempt.
A Four-Week Preparation Sequence and Readiness Checks
Sequence your study in four adaptable weeks: fire behavior reading, command organization, timeline scenarios, then full self-assessment. Finish only when your readiness checks pass without prompting.
Week one: master fire behavior vocabulary, flashover, backdraft, flameover, fire classes and extinguishing media, and explain each aloud with its indicator signs. Week two: command structure, BA control, fixed systems, boundary cooling, water management, and communications with the bridge; write each as a role, a duty, and a decision. Week three: run three different timeline scenarios, an engine room, an accommodation fire, a cargo space, and score each against the rubric, changing wind direction and crew availability between runs. Week four: rerun your weakest scenario cold, then review your logs to find recurring decision gaps.
Readiness checks before you consider the topic covered: you can define flashover, backdraft, and flameover and give a correct door-and-nozzle response for each; you can sketch a BA control board and narrate two entries and one withdrawal; you can state a ventilation decision with its reason and reversal trigger; you can explain how fixed-system release and manual attack are sequenced and why; and you can list three stability concerns from firefighting water. Note that one administrative point: training approval and certificate requirements sit with your flag Administration under the IMO STCW framework, so confirm course approval and any refresher requirements through the issuer rather than relying on secondary sources.
References and further reading
Use these references to explore the concepts and check the latest information from the relevant organizations.