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ANSWERS SEAWORTHINESS ......................................................
Question 1.
In relation to vessel construction materials, match each material to the correct response below.
1. Copper Nickel alloy |
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d. Is brittle.
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2. Glass Reinforced Plastic (GRP). |
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a. Does not corrode
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3. Steel. |
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c. Has good fire resistance
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4. Timber |
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b. Low weight & high strength.
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Question 2.
Match each definition to the correct item below.
1. Camber. |
d. The transverse curvature of a deck. |
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2. Chain locker. |
c. A compartment in the forward lower portion of a ship, in which the anchor chain is stored. |
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3. Chine. |
b. A sharp change in the transverse shape of a vessel’s hull plating. |
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4. Cofferdam. |
a. A narrow empty space between two bulkheads to prevent leakage between adjacent compartments |
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Question 4.
A stiff ship is caused by:
Question 5.
Explain briefly hogging and sagging.
Hogging is:
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Sagging is:
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Question 6.
Label the Deck Planking and a stringer
Question 7.
In relation to vessel construction materials, match each material to the correct response below.
1. Ferro Cement. |
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b. Is cheap.
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2. Aluminium. |
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c.Suffers minimal corrosion.
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3. Glass Reinforced Plastic (GRP). |
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d. Suffers UV damage
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4. Steel. |
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a. Is strong
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Question 8.
Match each definition to the correct item below.
1. Sheer. |
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c. The fore-and-aft curvature of a deck. |
2. Rake. |
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. d. The amount by which a mast, funnel or stern slopes from the vertical line. |
3. Rise of Floor. |
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a. The rise of the bottom plating above the base line measured at the line of moulded beam. |
4. Tumblehome. |
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b. The inward curvature of the hull above the summer waterline |
Question 9.
In the diagram below, label the transverse structural members.
Question 10.
Match each definition to the correct item below.
1. Gunwale. |
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c. A protective board fitted to the sheer plank.
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2. Rake. |
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d. The amount by which a structural member slopes from the vertical.
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3. Bulwark. |
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b. An above deck extension at the side of vessels to prevent loss of persons or equipment overboard.
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4. Stringer. |
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a. Fore and aft structural members tying frames together. |
Question 11.
Match each definition to the correct item below.
1. Athwartships. |
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c. At right angles to the fore and aft line. |
2. Ballast. |
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a. A weight or weights used to increase the draft or lower the ships centre of gravity.
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3. Collision Bulkhead. |
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b. A watertight bulkhead within 7½% of the length of a vessel from forward.
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4. Deck Beam. |
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d. A beam running athwartships supporting the deck.
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Question 12.
Match each definition to the correct item below.
1. Sponson. |
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a. Fender fitted to hull to prevent chafing and damage.
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2. Scupper. |
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c. Drain from weather decks to carry off water.
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3. Coaming. |
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b. Raised edge around an opening to help prevent water entry.
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4. Intercostal longitudinal. |
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d. A structural member fitted in short lengths between frames. |
Question 13.
A tender ship is caused by:
Question 14.
Draw the profile plan of a timber vessel’s longitudinal structures below.
Question 15.
Describe your precautions in order to slip for an annual out of water survey.
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Question 16.
In relation to vessel construction materials, match each material to the correct response below.
1. Rubber. |
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d. Is easily damaged
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2. Aluminium. |
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b. Needs care in antifoul choice.
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3. Timber. |
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a. Rots.
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4. Ferro Cement. |
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. c. Is heavy. |
Question 16.
Match each definition to the correct item below.
1. Transverse. |
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a. A watertight compartment.
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2. Deadwood. |
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b. A longitudinal beam supporting the deck beams.
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3. Bulkhead. |
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c. Forward or aft timbers drift bolted together as packing instead of a grown / sawn chock. |
4. Beam shelf. |
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d. At right angles to the fore and aft line. |
Question 17.
Name the parts below
Ranger Hope © 2005 (contains reworked material courtesy of ANTA)