black blue clouds guide heaven light lighthouse navigation sky steel white beacon guidance hope light house marine safe security circle compasses construction direction geometry instrument maritime navy pair of compasses sail sea ship travel zirkel anchored bay boat engine inflatable motor nautical navigate offshore water watercraft above-the-deck angles background cables cabling communicating communication cruise-liner cruise-ship decks edges exterior Indian-ocean journey ladder lighting lights lines navigational-lights ocean onboard perspectives railing rails safety secure signal-light sunlight tower transport transportation view views warning-lights harbour mast rig tackle vessel yacht coastline fiord island sailing sign arrow device electronic go gps portable red ride road satelite screen stop yellow