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Some of the sails described in the last chapter—such as the standing-lug and the leg-of-mutton sail—can be used with or without booms; but with most of the rigs described in this chapter—e.g. the balance-lug and the Una—the boom is indispensable.
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Fig. 47.—Una Boat.
The Una Rig, which was introduced to this country from the United States nearly half a century ago, though a somewhat dangerous rig for a novice, has many great advantages. A Una, or cat-rigged boat, as it is termed in America, is certainly the
