Wiktionary
n. The police department charged with patrolling harbours and waterways by boat.
Wikipedia
Water police, also called harbour patrols, port police, marine/maritime police, nautical patrols, bay constables or river police, are police officers, usually a department of a larger police organisation, who patrol in water craft. Their patrol areas may be coastal sea waters, rivers, estuaries, harbours, lakes, canals or a combination of these.
Water Police is a reality style action drama series, that merged professionally skilled actors with real officers and emergency service assets.
The focus of the series was to blend fact and fiction to innovatively blur reality in an all new genre.
So real were the production activities, it actually required a unique Deed of Agreement (historically, this was the first ever of its type in Queensland, Australia) between the production company and the State of Queensland, signed personally by the Police Commissioner and the production's Executive Producer.
The story scenarios provided a valuable and highly realistic training opportunity to all involved, while also enabling the production to acquire the otherwise unseen behind-the-scenes reality style stories.
Water Police (aka the Wateries) was also the first action drama series specifically produced for TiVO delivery in Australia and New Zealand back in 2009. A new series is currently in production, under the new title of Police Force, with each new season featuring a different specialist police operation.