Ключевые слова: abstract, blue light, blue light bulbs, boat, bulb, cable, chain, cruise, dock, dof, electric cable, electric light, electricity, entertainment, excursion, excursion ship, focus, fun, fuzzy background, hamburg, hamburg harbour, harbour, harbour cruise, illumination, leisure, light, lighting, low depth of field, power, quay, ship, string of lights, tourist, tourists, travel, unreal, vacation,