blue boat bright Carr copyspace danger glass lamp light lightboat lighthouse lightship maritime metal north railing rust ship sky tower vessel warn warning advice alert appropriate behavior appropriate behaviour black care concern directions no entry prohibited prohibition red rusty sign unwanted warning sign weathered white architecture automatic beam building bulb Dorset keeper nautical rocks safety sea security storm stripe alarm alarming angles appearances authorities authority aware awareness city communicate communication community exterior external height high megaphone megaphones sound volume warning-system driving pictogram road sign Road Warning Sign snow snow ahead snow sign snowing traffic traffic sign winter appropriate-behavior appropriate-behaviour avoid be-careful below-ground careful caution communicating dangerous digging digging-dangers flammable gas gaseous natural-gas no-ignition pipeline pipes potential risk risks risky signs stay-clear vapour vapours warned warning-sign boots feet footwear injury protect protection protective shoes announcement beware camera cctv information informing lookout notice observation observe surveillance under-observation video watch watched