| 摘要 |
For application to an inflatable boat having a longitudinal passageway in its bottom which customarily is formed as a flexible sheet, appliable means for receiving and holding a mast and a dagger board, comprising a removable substantially rigid member, as of wood, having a longitudinal slot with spaced side walls for registration with said bottom passageway and adapted to receive and hold upstanding extension areas at the margins of the bottom member, passageway, said slot being adapted to receive said dagger board, said rigid member having a base area and a top area having holes adapted to receive and hold a mast, and said substantially rigid member transversely terminating with means for attaching and detaching it to the inflatable side walls of an inflatable boat, eliminating necessity of shrouds.
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