Trim and Stability Flashcards
(500 cards)
The liquid mud tanks on your vessel measures 20’ x 18’ x 7’. The vessel’s displacement is 986 tons and the specific gravity of the mud is 1.6. What is the reduction due to 2 of these tanks being slack?
0.88
Find the relative density of dock water whose density 1,015 kgs / cu. m?
1.015
Your ship 12,000 tons displacement has a center of gravity 21.5 ft above the keel. You run aground and estimate the weight aground is 2,500 tons. The virtual rise in the center of gravity is _______.
5.66
Find the TPC in sea water of a vessel whose length and breadth of the waterplane at a particular draft are 130 meters and 23 meters respectively. Waterplane coefficient is 0.84.
25.74
What is the TPC of a box-shaped vessel 114 meters X 26.2 meters X 10 meters floating at an even keel draft of 5.16 meters in SW?
30.61
A vessel has deadweight carrying capacity at load displacement of 10,500 tons. Fuel, water and stores requires 1500 tons. Her cubic capacity is 500,000 cu.ft. What is the average stowage factor of a cargo that she could carry that would put her full and down?
55.55
A bulk freighter 580 ft in length, 60 ft beam, with a waterplane coefficient of 0.84, is floating in fresh water at a draft of 21’. How many long tons would it take to increase the mean draft by 1”?
67.6
A vessel is loading within the tropical zone. She will enter the summer zone after 6 days from departure. She consumes 45 tons of fuel and 8 tons of water daily. How many tons may she load over that allowed by her summer zone mark.
318
At any given draft the TPI of a vessel can be found by dividing the area of the water plane by:
420
You are going to load bales of wool having a stowage factor of 100 in # 3 lower hold which has a bale cubic of 62,000. How many tons of the wool can be stowed in the compartment, assuming 10% broken stowage?
558
The lower hold of your vessel has a bale capacity of 60,000 cubic feet. How many tons of cotton in bales having a stowage factor of 85 can be stowed in the lower hold, assuming a broken stowage of 20%?
565
You are loading a cargo of canned goods with a stowage factor of 65. If you allow 15% for broken stowage, how many tons can be loaded in a space of 55,000 cubic feet?
719
How many board ft of dunnage are in draft 4 ft wide, 1.5 ft high and 13 ft long?
936
A sling is rigged on a piece of a pipe weighing 1000 lbs.. The angle between the sling legs is 140 and the legs are of equal length. What stress is exerted on each sling leg when the pipe is lifted?
1469
The lower hold of your vessel has bale capacity of 45,000 cubic feet. How many cases of cargo weighing 450 lbs. and measuring 2.5 feet by 3 feet could be stowed in the hold, assuming a broken factor of 15 percent?
1700
In order to repair the sweat battens, you need to order 50 pieces of lumber of one inch x 6 inches x 12 feet. How many board feet should be ordered?
3,600
A tanker is loaded with 5,000 barrels of petroleum. The cargo was loaded at a temperature of 70 F, and the coefficient of expansion is .0004. What is the net amount in barrels of cargo loaded?
4980
Find the free surface constant for a tank that is 70 feet long, 35 feet wide and 25 feet deep. The specific gravity of the liquid in the tank is 0.78 and the ship is floating in salt water having a density of 1.026.
5,430.80
A cargo of 10,000 barrels of gasoline is loaded at a temperature of 90°F and a cargo temperature of 55°F is expected at the discharge port. Coefficient of expansion is 0.0007.
9790
A cargo of 10,000 barrels of gasoline is loaded at a temperature of 90°F, and a cargo temperature of 55°F, is expected on this voyage. It has a coefficient of expansion of 0.0006. How many barrels would you expect to discharge at your destination?
9790
A cargo of oil has a coefficient of expansion of 0.0005 per degree F. If this cargo is loaded at 70 F and a cargo temperature of 90 F is expected at the discharge port. How many barrels of cargo would you expect to unload if you loaded 10,000 barrels?
10,100
Find the displacement of your vessel, if the deduction of your vessel’s freeboard when loading in fresh water is 7.4 inches, the TPI is 52 tons at summer load draft.
15400
A vessel’s light displacement is 12,000 tons. It’s heavy displacement is 28,000 tons. When fully loaded it carries 200 tons of fuel and 100 tons of water and stores. What is the cargo carrying capacity in tons?
15,700
You have a shipment of lumber. Each piece is 3 inches thick, 3 inches wide and 15 feet long. If 2,000 pieces are loaded, this is equal to board feet of ______.
22,500