If so is the electricity local to the search light itself only or for the whole set? and are all the search lights interconnected or independent of each other? What do you suppose the wattage is and replacing the bulbs are like? Are they similar to modern search lights or much weaker? I imagine it uses some kind of DC current flow which would be much lower voltage then AC similar to the electricity onboard the RMS Titanic and other Olympic Class ships of that time.