680 NICHOLLS'S SEAMANSHIP AND NAUTICAL KNOWLEDGE
Paper 7.
1. What is mill scale? Is it injurious or does it help to preserve the
plate? How is it treated?
2. In ballast, loading at a single coal tip, when would you pump out
your ballast tanks and in what rotation? What special precautions
would you take?
3. Enumerate the entries made in the mate's log at sea, in port,
and when lying at anchor.
4. Discuss the methods of ventilating a general cargo.
5. Describe fully how you would stow bag grain and state the
precautions you would take against damage from sweat.
6. Describe in detail the construction of feeders for a bulk grain cargo.
7. A square cargo tray 4 feet by 4 feet, slung with four legs each 6 feet
long meeting in a ring at the top, supports a weight of 15 cwts.
Find the stress on each leg of the slings.
8. Stow any four of the following in one hold of an ordinary 'tween deck
steamer:—Bags of manure, bags of flour, drums of asphalt, cases
of dried fruit, cases of canned goods, cases of tinplate, barrels of
cotton seed oil, bags of grain.
Draw a rough cargo plan showing the method of stowage, dunnage,
separation and ventilation.
Paper 8.
1. What ventilation would you provide for green fruit in boxes for a
short passage?
2. How would you separate different parcels of (<z) coke, (6) rod iron,
and (c) sawn timber?
3. What is the rough log and who keeps it?
4. Describe a suitable routine for the inspection and upkeep of lifeboats
and life-saving appliances.
5. What precautions should be taken when pumping and draining
double bottom tanks with one centre suction at the after end?
• 6, What precautions would you take when renewing deck planks
over a steel deck?
7. A vessel 3890 tons deadweight has on board coal, stores and fresh
water amounting to 520 tons. The hold capacities are;—No. 1
52,200 cub. ft.; No. 2, 55,600 cub. ft.; No. 3, 44,500 cub, ft.; No, 4,