CARGO AND TRIM

527

Given KM 16 feet, KG 13-8 feet, dis-
placement 6000 tons, angle of heel 8°, find
the vessel's righting moment.

GZ=GMSin 0=2-2 ft x Nat Sin 8°
GZ=2-2 ft. >^ -1391=-306

Righting moment = W X GZ

= 6000 x -306
= 1836 foot-tons

Find the height of the transverse metacentre about the centre of
buoyancy in a box-shaped vessel, 36 feet beam and 18 feet draught.

Metacentre is 6 feet above 0. of B.
JO=9 feet, BM=6 feet.-. KM=15 feet.

A box-shaped vessel 200 feet long and 30 feet beam, what will
be her tons 'per inch immersion ?

__.- LxB 200x30

TJ-L - 12^35 = 12^35 -1W8B tons-

A rectangular-shaped vessel draws 8 feet. If her I.T.M.=480
foot-tons, and 40 tons is shifted 36 feet towards the stern, find the
new draughts.
Total moment == 40x36 = 1440 foot-tons. '
m ^ . . . Totalmoment 1440 0
Total tnm=-----------------^ 480