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,
What Are You Going to Do to Help the Boys? What Are You Going to Do to Help the Boys? "What Are You Going to Do to Help the Boys?" is a World War I era song released in 1918. Gus Kahn wrote the lyrics. Egbert Van Alstyne composed the music. It was published by Jerome H. Remick & Co. of Detroit, Michigan. Artist E.E. Walton designed the sheet music cover. It features Uncle Sam inside a red, white, and blue question mark. He is holding his beard and looking down at liberty bonds. To the left of this image it reads, "Buy a Liberty Bond!" on some editions. The