afterdeck anchor bow bowsprit bunting chain chained colors colours deck flag Flags forecastle foredeck forestay hawser hoisted immobilised immobilized jib lines maritime mast mooring moorings nautical ocean going pennants port power ready rigging ropes russian Russians safety sail sailing seaworthy secured security ship shroud standing rigging stay staysail stop stopped strength tall ship tall ships transport catamarans CBD city cityscape dinghy for hire fun grass Jetty leisure lined-up masts Perth recreational river river craft river views riverside sand shore sport Swan River water water sport water’s edge advice alert appropriate behavior appropriate behaviour black care concern danger dangerous directions emergencies emergency protect protection sign signs warning warning sign yellow