Page 365 - statbility for masters and mates

Strength curves for ships 353
Wave, as de®ned above, then the Wave Bending Moment (WBM) can be calculated using the formula:
WBM bEBEL2:5 10 3 tonnes metres
where B is the beam of the ship and where the value of b is found from the
table on page 351.
Example
The length LBP of a ship is 200 m, the beam is 30 m and the block coef®cient is 0.750. The hull weight is 5000 tonnes having LCG 25.5 m from amidships. The mean LCB of the fore and after bodies is 25 m from amidships. Values of the constant b are: hogging 9.795 and sagging 11.02.
Given the following data and using Murray's Method, calculate the longi- tudinal bending moments amidships for the ship on a standard wave with: (a) the crest amidships, and (b) the trough amidships. Use Figure 42.5 to obtain solution.
bEBEL2:5 10 3 WBM
M EM SWBM WEB
TBM (Total Bending Moment)
Fig. 42.5. Line diagram for solution using Murray's method.