618

NICHOLLS'S SEAMANSHIP AND NAUTICAL KNOWLEDGE

At the first port of call the following cargo was discharged. Find
the new G M assuming K M to remain the same.

TONS
6OO

SCO

H-22. a.00

G'

~

400

K
Fig. 36.

Weight of cargo— Tons 400 300 V.C G. above keel— Feet 20 22
500 600 23 24

Weights V.C.G. 400 tons 20 feet
Moments 8000

300 „ 22 „ 500 „ 23 „ 600 „ 24 „
6600 11,500 14,400

Removed 1800 tons From 10,000 „
40,500 foot-tons 212,050

Remaining 8200
171'55°

171,550

= 20-9 feet

8200

K 6P- for new condition = 20-9 feet
KM - = 22-0 „

= M „

CARGO PLAN.

Cargo plan (Figure 37) is that of a vessel laden with a cargo from
U.S.A. Given the following information calculate the vessel's meta-

Fig. 37.
centric height. Light displacement 4450 tons, height above keel of
initial centre of gravityl3 feet (K G)\ the height of metacentre in load
condition 18 feet (KM).