EXAMINATION PAPERS. SECOND MATES. Cargo Work and Elementary Ship Construction. B,T. Specimen Paper. (3 hours) 1. If you sounded a double bottom tank and found 16 feet of water, what action should be taken 7 2. What is a displacement scale ? State its uses. 3. How is the draught of a vessel affected when passing from salt water to fresh water? Give reason The loaded draught of a vessel is 22 feet 6 ins. and the fresh water allowance 5J inches. The vessel is loading in dock, density of water 1016. Calculate draughts forward and aft, to which you would load, vessel to be 6 inches by the stern. 4. What is meant by (a) centre of gravity; (b) centre of buoyancy? 5. What are deep tanks and why are they fitted ? 6. Give a brief description of (a) deck stringer; (I) panting beam; (c) beam knee. 7. What is a bilge keel? Give a rough sketch. 8. What precautions must be taken when loading general cargo for several ports? 9. State fully how a cargo of rice is stowed in a ship. Paper 1. 1. What arrangements of derricks would you suggest for loading cargo and lifting 5 cwt. per sling? 2. How would you prepare a hold for loading a cargo of coal Describe the system of ventilation you would adopt. 3. Describe the gear you would use to take in bunker coal from a lighter in bags when filling the side bunkers. i. Sketch and describe an arrangement of portable hatchway beams 667