4:22 NICHOLLS'S SEAMANSHIP AND NAUTICAL KNOWLEDGE

IL 18z+60|/=356,870

Multiply Bq. I. by 18 18z+18#=136,800

Subtract 42^=220,070

2/= 5240 tons
x + y= 7600 „

= 2360

Ore =3=2360 tons X 18 cub. ft.== 42,480 cub. ft.
Bales =y=5240 „ X 60 „ =314,400

7600 tons =356,880 cub. ft.

EXERCISES
1. A deep tank 42,280 cubic feet is filled with oil at 37-6 cubic feet
per ton instead of sea water, required tlxe difference of weight in tons.
Answer.—83-5 tons.
2. A hold of capacity 55,000 cubic feet has 100 standards of timber
at 270 cubic feet per standard stowed in it. How many bales of flax
could be stowed in the remaining space at 115 cubic feet per ton and 5
bales to the ton.
Answer.—243 tons, 1217 bales.
3. Convert the following cargo items into tons weight, give the
total cubic capacity and total weight, (i) 300 rolls of paper, length
42 inches, diameter 36 inches, stowage factor 95 cubic feet per ton;
(ii) 100 cases of pianos 6 ft. X5 ft. X2 ft. 6 ins., stowage factor 160 cubic
feet per ton; (iii) 400 tons cased goods at 40 cubic feet per ton.
Show by a cargo plan how you would stow the goods in a small
single hold ship with engines ait and two hatchways, ship full.
Answers— Paper 7425 cub. ft== 78-2 tons
Pianos 7500 „ 46-9 „
16,000 >,r 4000 „
30,925 525-1