The correct answer is A) Continue fighting the fire and use the ship's Fire Control Plan and coordinate with shore side firefighters upon their arrival to extinguish the fire. This is the correct answer because as the chief engineer, you should continue fighting the fire with the ship's crew using the ship's Fire Control Plan, which contains detailed information on the ship's firefighting systems and procedures. At the same time, you should notify the captain that shore side firefighting assistance is needed, and then coordinate with the shore side firefighters upon their arrival to work together to extinguish the fire. The other options are incorrect because B) stopping firefighting efforts and waiting for the shore side firefighters is not the best course of action, C) using the SOLAS manual instead of the Fire Control Plan is not the appropriate reference, and D) using the SOPEP plan, which is for oil spill response, is not relevant for a fire incident.