Page 63 - Nicolaes Witsen & Shipbuilding in the Dutch Golden Age

(66 II 5) 2. The Rake of the sternpost is th us, every 6 feet of height must rake 1 foot, so the rake is 3 feet.
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(72 II 49) To be sure about the rak e of the sternpost, one foot of rake is taken for each 6 feet of the length of the sternpost, and should someone wish it to have more rake, this would be bad for the ship. All exag- geration of the rak e will have to be made up for by
a loss in the middle, because th e wake must preserve its properties. On the sternpost numbers are applied , from which the draft of the ships can be read.
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(146 II 17) In the figure A [fig. 2.11] one can observe the shape of the Sternpost,
standing on the Keel.
Ab The rake of the Sternpost.
Ac The height of the sternpost.
be The breadth of the Sternpost below.
cf The breadth of the sternpost above.
gb The length of the Skeg.
h The Rabbet.
bd The heel of the keel, and thickness.
e The Knee of the sternpost on the Keel.
y The stopwaters.
o The Marks for the Stopwaters.
k The pin of the Sternpost standing in the keel.
(146 I 22) When making the Sternpost, take a piece of timber of the required length, breadth and thickness: extend a M easuring Rod [Rey] from the upper out- side end, at a, and another Rod at the bottom end at f and e: cross the Rods as at b, perpendicularly, then make anotchat d, andthentake alinefrom d and lower it to the Rod at c which will make the rake of the Sternpost; from f to e is the breadth of the lower end of the sternpost, from a to g the breadth of the upper end of the Sternpost, as can all be seen in the Figure C [fig. 2.12].
To determine the rak e of the Sternpost, for every six feet of length of the Sternpost one foot is reckoned for the rake: if the distance from a to b is taken for the length and from b to c for the rake, then make the back from a to c straight with a Rod from a to b, and to ad- just the Sternpost in the right angle hold the try square at b, and make marks according to the Measuring Rod at f and e [probably meaning c]. For cutting and shaping theseparatepartsonehasmoldsorPatterns,onwhich the timber is laid down to shape it accordingly, just as
Figure 2.11.
Plate XLVIII (drawing A)
How Ships Are Built in Holland Today
the master ribbands are determined to shape the sheer and sides of the Ship as wanted.
After the Sternpost has been put in the right angle, the inside and outside cut according to the line and in perpendicular, as can be seen from a to b and d to c, then the sternpost is laid with the inside facing up- ward and a cen ter line is drawn as from g to h, and to each side the required thickness of the inner side of the Sternpost is measured and hewn down to the Rabbet, which is to come in the sternpost, in the per- pendicular, from d to c and also from e to f. When this is done, the sternpost is turned around with the out- side face facing upward, and the skegs are fastened to it, as can be seen from a to i in the plate at B [fig. 2.13].
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(146 II 3 3) When then the Sternpost stands with its back facing up, then the Sk eg k is rst made on the Sternpost, at l, then other pieces are tted underneath, as m and n, after which the back is made straigh t and a center line is drawn onto it, as from o to p, and then it is cut to thickness above and below as with g to k and from i to h, from f to d and from c to e. The Pin is
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