559
OF ENGINEERING FORMULÆ.
Wave Lines of Vessels—continued.
Table giving the Height of the Vertical Lines
and the Length of Prolongation of the Hori-
zontal Lines to form Cycloidal Curves, sup-
posing the number of divisions to be 8, and the
diameter of the semicircle = unity or 1 ’ 00.
At Division No. j 1 | 2 | 3 4 j 5 | 6 |
Heiglä of vertical ~-14644 - 80866 - 5 691311 -85355!-MlMp 'O
Prolongation of horizontal j 19134^ • 3535 |*4619 ; 5^*4619 j'303o
A true cycloid may be constructed in the manner
shown by ‘the diagram in the preceding page, by
making the length (or half the base of the
cycloid) = diameter of the semicircle x I-570796-
Table of Proportion of Bow and Stern in
Wave-line Ships. (For different Speeds.)
Bow = -42 V2. Stern - -3 V2.
Speed. Miles per Hour. Length in feet of J Speed. Miles per Hour. Length in feet of
Bow. Stem. Bow. Stern.
1 •42 •3 1 11 50-81 36-3
2 1-68 1-2 12 60’48 43-2
3 3-78 2-7 13 70-98 50-7
4 6-72 4-8 14 82-32 58’8
5 10-50 7-5 15 94-50 67-5
6 15-12 10-8 16 107*52 76-8
7 20'58 14-7 17 121-38 86-7
8 26’88 19-2 18 136-08 97-2
9 3 !-02 24-3 19 151-62 ' 10S-3
10 42 30 20 168 120