boat danger firefighting ocean parade rescue rescue ship safe sea security ship splash water wave drown ferry life lifebelt lifering net preserver rail red ring rope salvation save white yacht bird deck emergency Life boat oceanliner seagull travel black cruise deliverer duotone help hulk life-boat monochrome rescuer safety sail sailing blue bow breakwater cabin dock harbour lifeboat moored mooring orange port portholes reflection RNLI shore stern alert buoy captain certified drill drowning evacuation flashlight float flotation found guaranteed lifesaver light lost man overboard on board overboard preserve rescued restored seaworthy sink swim vessel waves advice advising communicating communication cruise-liner cruise-ship decks emergencies huge-ocean-going-vessel indicator information informing journey lifebuoy location message sign signage survival wording words access angles assistance cables coast coastal crew distinctive double-duty equipped lifeboat-tender limited-access limited-entry lowered lowering maintained maintenance passenger-shuttle prepared ready released releasing ship’s-tender tender transport transportation visibility