Question 227Safety & Environmental - 1st Asst/Chief

The correct answer is B) convection. The spreading of fire through a vessel's ventilation system is an example of heat transfer by convection. Convection is the transfer of heat through the movement of a fluid, such as air or water. In the case of a fire spreading through a ventilation system, the hot gases and smoke are carried through the system by the movement of air, resulting in the fire spreading to other areas of the vessel. The other answer choices are incorrect because conduction involves the direct transfer of heat through a solid material, radiation involves the transfer of heat through electromagnetic waves, and windage refers to the force exerted by wind on a vessel, which is not a form of heat transfer.