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Exam (elaborations)

DCASE UNIT 4 (3

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Exam of 5 pages for the course EMSIC - Michigan Study Guide at EMSIC - Michigan Study Guide (DCASE UNIT 4 (3)

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  • June 4, 2024
  • 5
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers
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denicetho
DCASE UNIT 4
B - ANS-Breadth / width of compartment (ft)

BM - ANS-metacenteic radius (ft)

d - ANS-Distance weight is add/menoved from centerline of ship or horizontal distance
weight is shifted (ft)

D - ANS-Depth of flooding watwr (ft)

GG1 - ANS-Vertical movement of ship's center of gravity (ft)

GG2 - ANS-Horizontal movement of ship's center of gravity (ft)

GG3 - ANS-Free surface correction virtual rise of gravity (ft)

G3G5 - ANS-Free communication correction virtual rise in gravity (ft)

GM - ANS-Metacentric height (ft)

GZ - ANS-Ship's righting arm (ft)

KG0 - ANS-Original height of the ship's center of gravity (ft)

KG1 - ANS-New height of the ship's center of gravity

KGa - ANS-Assumed height of the ship's center of gravity

Stability - ANS-The tendency of a ship to rotate one way or the other (to right itself)

Initial stability - ANS-The stability of the ship in the range from 0degrees to 7/10degrees

3 parts of FCE - ANS-1. Compartment is open to the sea
2. Compartment is partially flooded
3. Compartment is off-centerline

3 basic conditions which may cause the ship to have a permanent list - ANS-1. G
moved off centerline

, 2. -GM
3. Combination of both

Corrections for G off centerline - ANS-1. Determine cause if list
2. Shift weight to high side
3. Add weight to high side / remove weight from low side

Causes of -GM - ANS-Removal of low weight
Addition of high weight
Shifting weight up
FSE
FCE

Corrections for -GM - ANS-Eliminate FSE/FCE
add weight low / symmetrically
Remove weight high / symmetrically
Move weight down / symmetrically

Limitations to ship's design criteria - ANS-1. Limiting draft marks not submerged (prior to
damage)
2. No abnormal topside weight
3. Liquid loading instructions are followed
4. Watertight integrity is maintained

Cold weather bill responsibly - ANS-1LT / EO

Types of sinkage - ANS-Bodily
Capsizing
Plunging
Breaking up

Flooding effects diagram - green - ANS-Flooding will improve stability

Flooding effects diagram - pink - ANS-Flooding will decrease stability

Flooding effects diagram - yellow - ANS-Flood solid to improve stability

Flooding effects diagram - white - ANS-Negligible stability change when flooded

Liquid loading diagram - ANS-Depicts compartments & tanks:

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