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STEAM NAVIGATION. 23

Power of carrying much sail with safety, and from their displacingless water than other vessels of the same burden, there is every reasontO expect that they will sail with greater velocity.

Although, from the few experiments I have yet made with theTRIPLE VESSEL, TI have not been able to ascertain this matterwith Precision, I believe, from what I have seen, that if they arerightly Constructed, and the masts and sails Judiciously made, theywill, in favourable situations, run fifteen or sixteen miles an hour. It1S probable that, by improvements which further experience may sug-Est, this velocity may be increased.

A FOURTH important property of these vessels is, that of theirMaking little or no LEE WAY, and which I am convinced of fromthe xperiments I have made. Their HEEL, when upon a wind,being inconsiderable, the three Keels become thereby effective Lee

9ards; a circumstance of great advantage when they are beating toWindward.

; These vessels have other PROPERTIES that deserve to be men-tioned. They require no BALLAST, which must afford great roomfor the Stowage of fewel, water, and provisions: an essential particularin long Voyages, with numerous crews.

From their great BUOYANCY, they will readily rise on the sea,and. therefore be less exposed to the danger of the waves breaking°ver them, than heavy ships which draw much water.

The BENEFITS resulting from the PROPERTIES above enu-erated, and which must follow from the employing ships and otherVessels constructed on these principles, are many and striking.

en there is wind, they must sail quicker than other ships; and> during. calms and light winds, they will by means of theEELS advance, when other ships make no progress, the dura-Bein of voyages will thus be considerably shortened. Sea riskshy Very much in proportion to the duration of the voyage, it isie°US many lives, and much property, will be thereby daily pre-

Tved to the world; and that, independent of the advantages which

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1787.