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Building ships on computers

Brian FarrimondElla Pereira

Mark Anderson(Edge Hill University)

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Ship components

• Hull

• Above deck

• Propulsion

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Hull

4

Hull

5

Hull

6

Hull

SternBowPort

Starboard

Deck

Port is left Starboard is right

side of the ship side of the ship

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Hull

Keel(ship’s backbone)

Rudder(to steer the ship)

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Hull: Keel• The

backbone of the ship

• First part of the ship to be made

Titanic’s keel

Bow end

Port

Starboard

Which is

- port

- starboard?

Do you recognise the ship?

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Hull: Frames

• The ribs of the ship

KeelFrames

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Hull: Frames

• The ribs of the ship

KeelFrames

Which side is the nearest to us - port or starboard?

Starboard

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Hull

Can you see• Bow• Stern• Rudder• Deck? Deck

Rudder

Stern

Bow

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Port or starboard?

Port

Starboard Port

Starboard

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Measuring the hull

Beam

Freeboard

Draught Waterline

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Measuring the hull

16 m

5 m

6 m Waterline

Beam =

Freeboard =

Draught = 6 m

16 m

5 m

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Above deck

Funnel

Mast

Superstructure

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Propulsion

Paddle wheel

Wheel cover

Sponson

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Name the parts

Can you see

• Mast

• Funnel

• Bow

• Stern?

Bow

FunnelMast

Stern

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Name the parts

Can you see

• Paddle wheel

• Wheel cover

• SponsonPaddle wheel

Wheel cover

Sponson

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Superstructure

Funnel

Mast

Bow

Hull

Sponson

Paddle wheel

Wheel cover

Stern

Keel

Deck

Rudder

starboard

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Draught

Freeboard Waterline

Beam

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Ship Builder Demo

• Making a side wheeler paddle steamer– Superstructure - offset– SuperstructureSection – trapezium– Mast – rake angle– Funnel – offset from centre line

• Making the dynamic model

• Exporting the dynamic model

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Part 2

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Adding a ship to a scenario

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• Running Scenario Builder– demo scenario Liverpool Scenario 1

• Using a scenario in another, new scenario.

Use scenario Liverpool Scenario 1.

• Adding a new ship to the scenario– create simple paddle steamer XXX – demo scenario Sailing XXX

Use scenario Liverpool Scenario 1.XXX is a British ship.At 06:00 XXX is at P.At 06:18 XXX docks unassisted in Liverpool Docks at berth Albert Dock 1.

Adding a ship to a scenario

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• Running Scenario Builder– demo scenario Liverpool Scenario 1

• Using a scenario in another, new scenario.

Use scenario Liverpool Scenario 1.

• Adding a new ship to the scenario– create simple paddle steamer XXX – demo scenario Sailing XXX

Use scenario Liverpool Scenario 1.XXX is a British ship.At 06:00 XXX is at P.At 06:18 XXX docks unassisted in Liverpool Docks at berth Albert Dock 1.

Adding a ship to a scenario

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• Running Scenario Builder– demo scenario Liverpool Scenario 1

• Using a scenario in another, new scenario.

Use scenario Liverpool Scenario 1.

• Adding a new ship to the scenario– create simple paddle steamer XXX – demo scenario Sailing XXX

Use scenario Liverpool Scenario 1.XXX is a British ship.At 06:00 XXX is at P.At 06:18 XXX docks unassisted in Liverpool Docks at berth Albert Dock 1.

Adding a ship to a scenario

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The Liverpool Scenario

At 06:00 XXX is at P.

At 06:18 XXX docks unassisted in Liverpool Docks at berth Albert Dock 1.

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Adding your ship to the scenario

Use scenario Liverpool Scenario 1.

XXX is a British ship.

At 06:00 XXX is at P.

At 06:18 XXX docks unassisted in Liverpool Docks at berth Albert Dock 1.

How do we change this so we can see your ship instead of XXX?

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Adding your ship to the scenario

Use scenario Liverpool Scenario 1.

XXX is a British ship.

At 06:00 XXX is at P.

At 06:18 XXX docks unassisted in Liverpool Docks at berth Albert Dock 1.

•Open ScenarioBuilder

•Select menu item File | Open Scenario and open Sailing XXX in examples folder

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Steering your own ship

Use scenario Liverpool Scenario 1.

XXX is a British ship.

At 06:00 XXX is at P.

XXX is manually controlled.

• Controls for your ship

• Demo

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Steering your own ship

• knots (sea miles per hour)

• 1 sea mile = 1.852 metres

• sometimes called a nautical mile

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Steering your own ship

• heading is direction measured in degrees from the north direction

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HeadingNorth

Heading 000

Heading 090

Heading 180

Heading 270

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Sailing towards Albert Dock from P

000

090

180

270

090

180 About 150

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Sailing towards Irish Sea from P

000

090

180

270

000

270 About 330

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Sailing towards Liverpool from Q

000

090

180

270

090

000About 060

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Sailing through the Liverpool Scenario

• Try sailing your ship from P, then Q then R

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Part 3

• Turning a ship• Turning a ship

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Turning a ship

• Ships, like cars, need a bit of room to turn round

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Turning a ship

• What shape is the path the ship follows?

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Turning circle

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Turning circle

• What features of the ship affect the size of the circle?

Radius

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Turning circle

• In Builder we first assume:

Radius = a * Length of ship

Radius

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Turning circle

• In Builder we first assume:

Radius = a * Length of ship

• Neater to say

R = a * L

Radius

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Turning circle

R = a * L

Radius

Try out different values of a for our ship.

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Turning circle

• In Builder we next assume:

R = a * L + b * S

where S is the speed

Radius

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Turning circle

• In Builder we next assume:R = a * L + b * S

where S is the speed

Try out different values of b for our ship.

Radius

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Turning circle

R = a * L + b * S

• This is an example of a mathematical model

• We are using mathematical symbols to represent the real world

• This kind of model is an equation