Salusbury, Thomas, Mathematical collections and translations (Tome I), 1667

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1Beames ought to be compoſed of three Beams conjoyned
wayes, as was ſaid in the precedent Explanation; and make two of
the Tires lie upon the Ships; and to thoſe Tires, let that ſunk Ship
be grappled: and another Tire of the ſaid Beams is to be placed in
the midſt between the one and the other couple; and two other
Tires of the ſaid Beams ought to be faſtened upon the one and other
ſide, that is, upon the Rifings or Bends of thoſe two couples of
Ships; and that being done, there will be in all ſeven Tires or
ders of Beams; which ſeaven Orders of Beams ought conjunctly to
be prolonged, on the one and on the other ſide.
almoſt to the
length of the Hull of each Ship, as in the Figure is represented: and
The Figurall example how to recover a Foundered Ship with four
ſmall Ships
326[Figure 326]
this being done, you are to proceed, as hath been ſhewn in the two,
that is, fill them top full of water, and at low water, imbreech the
Ship ſunk very well, withall thoſe ends of Ropes or Cables, that
you did belay to thoſe ſeven Tires of Beams: and when thoſe
Grapplings ſhall be well made faſt; you ſhall at high water bale or
free the water by little and little out of the Ships, one pair after
nother, till you feel the foundered Ship is diſengaged from the
tom, and water-born, as was ſaid in the two.
And having
ted it from the bottom (if it be in a ſhallow place, as was that where
the Ship was foundered neer Malamoccho) you are to proceed to let
out the reſt of the ſaid water, but take it equally and gradually from
the one and the other pair, that they may deſcend evenly, and
out heeling, as was ſaid of the two; and in ſo doing, the ſaid Ship
ſhall not only be hoiſted up to the Surface of the water, but much

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