Lesson 1 Ship Characteristics
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Transcript of Lesson 1 Ship Characteristics
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NS100
Ship Characteristics
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Objectives:1. Be familiar with basic ship structure definitions.
2. Understand shipboard compartmentation, terminology, and watertight integrity.
3. Demonstrate an understanding of the different material conditions of readiness.
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Ship Structure DefinitionsHull - The main body of the ship.
Shell Plating - The sides of the hull.
Bilge - Intersection of side plating and bottom plating.
Keel - Backbone of the ship.
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Ship Structure Definitions Frames - Fastened to the keel, running
athwartships. Support the skin.
Main Deck - Uppermost continuous deck
from bow to stern.
Levels - Similar to decks, located above
the main deck.
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Ship Structure Definitions Decks - “Floors” aboard ship.
Bulkheads - “Walls”.
Overheads - “Ceilings”.
Compartments - “Rooms”. Bounded by
overheads, bulkheads and decks.
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Hull Reference Terms
Trim- The relationship between fore and aft
draft. •“In trim”
•“down by the bow” or
•“down by the stern.”
List - The athwartships balance•Starboard list
•Port list6161
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Hull Reference TermsBallast - Weight added to lower part of ship to
help keep her in balance. Either permanent
or controllable (ballast tanks).
Propeller guards
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Compartment and Deck Numbering Every compartment aboard a ship is given
an identifying alphanumeric symbol which
is marked on a label plate on or near the
entrance. For example:
3-75-4-M
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3-75-4-M3 - Third deck. 75- The compartments forward boundary is on
or immediately aft of ship’s frame 75. 4 -The second compartment outboard of the
centerline to port (even numbers to port, odd to starboard).
M- the compartment is used for ammunition.
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01-75-0-F01 - First level. 75- The compartments forward boundary is on or
immediately aft of ship’s frame 75. 0 -The compartment on the centerline. F- the compartment is a fuel tank.
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Compartment NumberingE - engineering DC – damage control
F - fuel J- JP5
C - ship control (bridge,CIC)
L - living spaces M - ammunition spaces
Q - spaces not otherwise designated
V - voids
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Shipboard Compartmentationand Watertight Integrity A ship’s structure is divided into many
watertight compartments in order to
maximize damage control readiness.
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secured – Condition X-ray
secured – Condition Yoke
secured – Condition Zebra
closed when not in use
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secured - “darken ship” condition
always open
secured - Chemical, Biological, and Radiological (CBR) attack.
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Review Questions1. What is the difference between a deck and a level?2. What is the number of the main deck?3. When is material condition Yoke set throughout the ship?4. Besides general quarters, when is material condition Zebra set throughout the ship?5. What do Circle William fittings protect against?
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Review Questions6. What are Dog Zebra fittings designed to do?7. What is the difference between list and trim?8. If you were told, “Ensign, go to compartment 6-132-0-E to get a HT (USN - Hull
Maintenance Technician) punch,” where would you go?