In figure 1 of the illustration, fire would spread to compartment "B" by the following method: radiation convection conduction See illustration SF-0013.
• Difference between radiation, convection, and conduction as methods of heat transfer in shipboard fires • How heated smoke and gases move in Figure 1 compared with how the bulkheads and decks are arranged • Whether there is a direct opening between compartment A (where the hot gases are shown) and compartment B
• Look closely at the arrows around compartment B in Figure 1: are they showing movement of hot gases, or just heated surfaces next to B? • Ask yourself: does heat get into B through an opening where gases can flow, through a solid boundary that can get hot, or by line‑of‑sight heat from flames? • Which methods of spread would require physical contact between materials, and which can occur across open space or through ventilation ducts?
• Identify whether there is any door, duct, or vent directly connecting A and B in Figure 1 • Decide if B is mainly exposed to hot gaseous flow (smoke/air currents) or to heated metal bulkheads/decks from a neighboring space • Confirm which heat transfer method needs no material in between (line of sight) and whether that is actually possible between A and B in this layout
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