Ocean power in New Zealand speed. Because the tidal speed doubles, eight times more tidal power can be produced at spring tides than at neap tides. The entrance to Kaipara Harbour, one of the largest harbours in the world, is a channel to the Tasman Sea. It narrows to a width of , and is over deep in parts. On average, Kaipara tides rise and fall . At high tide, nearly 1000 square kilometres are flooded. Spring tidal flows reach 9 km/h (5 knots) in the entrance channel and move 1,990 million cubic metres per tidal movement or 7,960 million cubic meters daily. In 2011,
Convention Relating to the Status of Refugees Cultural Rights, but no one has ever done so in regard to violations of the Convention. Nations may levy international sanctions against violators, but no nation has ever done this. At present, the only real consequences of violation are 1) public shaming in the press, and 2) verbal condemnation of the violator by the UN and by other nations. To date these have not proven to be significant deterrents. Convention Relating to the Status of Refugees The Convention Relating to the Status of Refugees, also known as the 1951 Refugee Convention, is a United Nations multilateral treaty that defines who