BOW9, alarm, anticipation, assistance, avoidance, avoiding, beacon, beacons, beam, beams, benefit, blue, bright, caution, charity, clarity, cliff, cliffs, cloud, clouds, coast, coasts, coastal, coastline, coastlines, danger, dangers, dark, dependable, direction, electric, electricity, flashing, dusk, evening, intermittent, guidance, guide, guiding, hazard, hazards, hazardous, help, horizon, indication, lamp, lamps, landmark, landmarks, leading, light, lights, lighthouse, lighthouses, navigation, night, peninsula, pharos, piercing, projector, promontory, protection, protecting, reliable, rocks, safe, safety, sailor, salvage, save, saving, sea, security, serenity, shipping, showing, signal, storm clouds, stormy, sweeping, symbol, symbolic, vertical, vision, warning, warn, water