Page 153 - Practical Ship Design

120 Chapter 4

~
H I L M
~ -
‘Second” design ipproximate weights
jimensions, lightship, load dispt tructure, outfit, machinery
7 dimensions I metres ,tructural numeral
3
3 length O.A. .(B + Ts)
10 length B.P. -L ).85 L (D - Ts)
11 3eam -B f I I I h
12 depth to dk - D
13 depth to dk
14 draft scantling - Ts
15 draft design - Td
16
17 weights
18
19 net struct weight
20 electrodes
21 rteel numeral - E
~ ~~
22 total struct weight
K
23 outfit weight :onst -
24 machinery weight Nsi = K*E’ 36
25 margin or Cbd = 0.70; all M.S.
26
27 lightship
28 deadweight
29 ~~~
30 full displt ~ ~
31 deduct appendages Ns corrected for Cb
32 )ther corrections
33 mid displt ~~~ ~
34 Ns (all mild steel)
35 block coefficient
36 L x 6)
37 <O
38 3pprox. outfit weight
39
40 nain engine (MCR = )
41 ’emainder
42 3pprox. machinery weight

Fig. 4.19(b). Spreadsheet for merchant ship design (continued). Revises first design prepared in
Fig. 4.19(a) with rounded-off dimensions and more accurate weights.