CARGO LOADING
Hands-on Activity – 1
Objective: To load ship’s cargo holds.
Material:
1. Ship
Hold 3 Hold 2 Hold 1 2.
Wooden Blocks
Qty
3
3
6
Slides 21 - 30
3
6
3
3
3. Tub filled with water.
Procedure:
Place the ship in water
Part 1: Load the given wooden blocks in the three holds of the ship such
that
1. The cargo distribution is uniform in all three cargo holds.
2. Maximum available volume is utilized.
3. The ship should stay upright and remain stable after loading.
Part 2: Load Hold-1 Horizontally, Hold-2 In blocks, Hold-3 Vertically.
CARGO LOADING
Hands-on Activity – 1
Objective: To load ship’s cargo holds.
Material:
1. Ship
Hold 3 Hold 2 Hold 1 2.
Wooden Blocks
Qty
3
3
6
Slides 21 - 30
6
3
3
3
3. Tub filled with water.
Procedure:
Place the ship in water
Part 1: Load the given wooden blocks in the three holds of the ship such
that
1. The cargo distribution is uniform in all three cargo holds.
2. Maximum available volume is utilized.
3. The ship should stay upright and remain stable after loading.
Part 2: Load Hold-1 Horizontally, Hold-2 In blocks, Hold-3 Vertically.
CARGO LOADING
Hands-on Activity – 1
Objective: To load ship’s cargo holds.
Material:
1. Ship
Hold 3 Hold 2 Hold 1 2.
Wooden Blocks
Qty
3
3
6
Slides 21 - 30
6
3
3
3
3. Tub filled with water.
Procedure:
Place the ship in water
Part 1: Load the given wooden blocks in the three holds of the ship such
that
1. The cargo distribution is uniform in all three cargo holds.
2. Maximum available volume is utilized.
3. The ship should stay upright and remain stable after loading.
Part 2: Load Hold-1 Horizontally, Hold-2 In blocks, Hold-3 Vertically.
CARGO LOADING
Slides 38-53
Hands-on Activity – 2 Objective: To load ship till it becomes a Full and Down condition and
calculate Broken Stowage.
Material: 1. Ship
2.
Hold 3 For Hold-1
Wooden Blocks
Hold 2 Hold 1 Volume
(in cu cm)
24.36
3
24.36
3
24.36
3
Qty
CARGO LOADING
For Hold-2
Wooden Blocks
Volume
(in cu cm)
42.39
Qty
2
22.6
4
50.46
2
Volume
(in cu cm)
24.4
Qty
6
50.46
1
For Hold-3
Wooden Blocks
Slides 38-53
CARGO LOADING
Slides 38-53
3. Tub filled with water.
Procedure:
All measurements should be done in cm
Place the ship in water and load the given wooden blocks in all the three
holds
Calculate Broken Stowage:
1. Calculate volume of hold (V) = height *width * depth
For Hold-1 =
For Hold-2 =
For Hold-3 =
2. Calculate volume occupied by cargo (v):
For Hold-1 (total volume of all rectangular blocks stowed):
CARGO LOADING
Slides 38-53
For Hold-2 (total volume of cylindrical and rectangular wooden blocks
stowed):
For Hold-3 (total volume of square and rectangular wooden blocks
stowed):
3. Calculate broken stowage :
L= (V-v) / V *100
For Hold-1:
For Hold-2:
For Hold-3:
V(volume of hold) v (in cu cm)
(in cu cm)
Hold -1
Hold -2
Hold -3
L%
CARGO LOADING
Slides 38-53
Hands-on Activity – 2 Objective: To load ship till it becomes a Full and Down condition and
calculate Broken Stowage.
Material: 1. Ship
2.
Hold 3 For Hold-1
Wooden Blocks
Hold 2 Hold 1 Volume
(in cu cm)
24.36
3
24.36
3
24.36
3
Qty
CARGO LOADING
For Hold-2
Wooden Blocks
Qty
Volume
(in cu cm)
42.39
2
22.6
4
50.46
2
Volume
(in cu cm)
24.4
Qty
6
50.46
1
For Hold-3
Wooden Blocks
Slides 38-54
CARGO LOADING
Slides 38-53
3. Tub filled with water.
Procedure:
All measurements should be done in cm
Place the ship in water and load the given wooden blocks in all the three
holds
Calculate Broken Stowage:
1. Calculate volume of hold (V) = height *width * depth
For Hold-1 =
For Hold-2 =
For Hold-3 =
2. Calculate volume occupied by cargo (v):
For Hold-1 (total volume of all rectangular blocks stowed):
CARGO LOADING
Slides 38-53
For Hold-2 (total volume of cylindrical and rectangular wooden blocks
stowed):
For Hold-3 (total volume of square and rectangular wooden blocks
stowed):
3. Calculate broken stowage :
L= (V-v) / V *100
For Hold-1:
For Hold-2:
For Hold-3:
V(volume of hold) v (in cu cm)
(in cu cm)
Hold -1
Hold -2
Hold -3
L%
CARGO LOADING
Slides 38-53
Hands-on Activity – 2 Objective: To load ship till it becomes a Full and Down condition and
calculate Broken Stowage.
Material: 1. Ship
2.
Hold 3 For Hold-1
Wooden Blocks
Hold 2 Hold 1 Volume
(in cu cm)
24.36
3
24.36
3
24.36
3
Qty
CARGO LOADING
For Hold-2
Wooden Blocks
Volume
(in cu cm)
42.39
Qty
2
22.6
4
50.46
2
Volume
(in cu cm)
24.4
Qty
6
50.46
1
For Hold-3
Wooden Blocks
Slides 38-53
CARGO LOADING
Slides 38-54
3. Tub filled with water.
Procedure:
All measurements should be done in cm
Place the ship in water and load the given wooden blocks in all the three
holds
Calculate Broken Stowage:
1. Calculate volume of hold (V) = height *width * depth
For Hold-1 =
For Hold-2 =
For Hold-3 =
2. Calculate volume occupied by cargo (v):
For Hold-1 (total volume of all rectangular blocks stowed):
CARGO LOADING
Slides 38-54
For Hold-2 (total volume of cylindrical and rectangular wooden blocks
stowed):
For Hold-3 (total volume of square and rectangular wooden blocks
stowed):
3. Calculate broken stowage :
L= (V-v) / V *100
For Hold-1:
For Hold-2:
For Hold-3:
V(volume of hold) v (in cu cm)
(in cu cm)
Hold -1
Hold -2
Hold -3
L%
Center of Gravity & Buoyancy
Slides 67-71
Hands-On Activity – 3
Objective: To find Center of Gravity and Buoyancy
Material:
Wooden block
Procedure:
1. Observe the center point of the wooden block which is the Center
of Gravity.
2. Place the block in water.
3. Discuss the location of Center of Buoyancy.
Circle the correct answer:
Center of buoyancy is above / below the center of gravity.
Center of Gravity & Buoyancy
Slides 67-71
Hands-On Activity – 3
Objective: To find Center of Gravity and Buoyancy
Material:
Wooden block
Procedure:
1. Observe the center point of the wooden block which is the Center
of Gravity.
2. Place the block in water.
3. Discuss the location of Center of Buoyancy.
Circle the correct answer:
Center of buoyancy is above / below the center of gravity.
Metacentric Height
Slides 72-80
Hands-on Activity – 4
Objective: To calculate the Metacentric height
Material:
Model
Top view
Procedure:
1. Place the model in water.
2. Move all the three weights through distance d = 8cm
on one side.
Metacentric Height
3. Measure the lengths AB and BC
4. Calculate shift in center of gravity using
GG1 = w*d / W
Slides 72-80
Metacentric Height
Slides 72-80
Where
w = Weights moved = 125gm
G = Original center of gravity
G1= New center of gravity after the weights are shifted.
d = distance moved in cm = 8cm
W = weight of ship = 433gm
5. Calculate GM = GG1 * AB/ BC.
Free Surface Effect
Slides 81 - 87
Hands-on Activity – 5
Objective: To observe effect of free surface on ship stability
Material:
Model: Plastic box, Blue marbles
Procedure:
1. Load the three middle compartments of the plastic box with 10
blue marbles each.
2. Lift the box and test the stability of the box by tilting it.
3. Now load the three middle compartments completely with 50 blue
marbles each and test the stability.