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,
Cecil Spring Rice German and French), Spring Rice was responsible for translating numerous Persian poems into English. Spring Rice's letters and poems were collected together by his daughter, Lady Arthur, and many are now held by The National Archives. Further papers, relating to his diplomatic postings, and diaries of his travels in Japan, are held by the Churchill Archives Centre. Spring Rice was invested as a Knight Grand Cross of the Order of St Michael and St George in 1906 and a Knight Grand Cross of the Royal Victorian Order in 1908. In 1906 he was made a Grand Cordon of Order of