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LEGEND:

USCG 0449-SA-4

STEPS

SOLUTION:

Displacement =

Length =

Width =

Specific Gravity =

Sea Water SG =

GG' =

x 2

GG' =

GG' =

0.48

Select the closest answer.

A) .27 ft.

B) .48 ft.

ANSWER

C) .57 ft.
D) .74 ft.

1,812,292.68

3,780,000

Blue = information provided.

Black = calculated values.

Red = table values, etc.

Green = ANSWER

On a vessel of 9,000 tons displacement there are two slack deep tanks of palm oil (SG
.86). Each tank is 40 feet long and 30 feet wide. What is the reduction in metacentric
height due to free surface with the vessel in sea water (SG 1.025)?

40 '

1.025

0.86

9,000 tons

30 '

2 TANKS

0.86/1.025 x 40' x 30'

420 x 9000 tons

r x Length x Beam

420 x Displacement

Principles of Stability

Stability and Trim Calculations - Free Surface Correction - Reduction in GM

0449-sa-4.pdf

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