United States Naval Institute Proceedings Volume 36, No. 2

United States Naval Institute Proceedings Volume 36, No. 2

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1910 edition. Excerpt: ...little concern since the trips are but three or four days in length between terminals and the navigation is in fresh water. The speed and all distances are measured in statute miles. About eleven miles an hour empty and ten miles when full seem the average. The engines rarely develop over two thousand horses, which in heavy gales, when the ship is light and largely the sport of the winds, must cause some uneasiness. The latter inconvenience is neutralized by letting water into the double bottoms. The jet condenser is universal. Despite the poor vacumm it yields (say 22 to 24 inches), these vessels are very economical in fuel. The Peter White, with I560 horse-power, for example, gets one horse-power for 1.7 lbs. of coal and she burns but 270 tons during the round trip of six days, yet she carries 9000 tons of ore. The J. E. Upson, of the same capacity, on the same coal expenditure, develops 1950 indicated horse-power, and makes twelve miles an hour when light. There are numerous instances of coal consumption of 1.6 per horse-power and even less. An automatic feed replaces the water tender. Electric lighting is the rule. Naturally, external corrosion of the hull and fouling, the banes of our existence, are unknown. The interior of the vessel is either red leaded as with us, or is coated with a special black mineral oil which has proved both cheap and effective. The steering engine is commonly placed under the wheel. It is, however, also found in the engine room--a better location, of course. I heard some complaint of the telemotor by which this engine is controlled from the pilot-house, and I gathered the impression that captains, as a rule, prefer to have the steering engine directly under their feet. i The handling of these long craft...show more

Product details

  • Paperback | 238 pages
  • 189 x 246 x 13mm | 431g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236887670
  • 9781236887672