Transactions of the Liverpool Engineering Society Volume 6-7

Transactions of the Liverpool Engineering Society Volume 6-7

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1886 edition. Excerpt: ...TUNNELS. These should be made much stronger than they usually are, by a sufficient number of stiffening bars on the plane sides, and more care taken that no holes for holding-down holts for tunnel-pedestals are likely to pass water through, and otherwise properly caulked and made water-tight. If the tunnel is not water-tight, and a compartment is flooded, it finds its way into the next compartment, and destroys the efficiency of the intermediate bulkhead. DECK RELIEF FORTS. Closed bulwarks are very much superior to open rails if ample provision be made for freeing the decks of water, by providing a sufficient number of side relief ports and scuppers in the case of ships with plated bulwarks. When ships are deeply laden and the centre of gravity of weights high, the addition of many tons of water on deck, especially when rolling in a seaway, is quite sufficient to capsize her, as has been proved to have happened many times, hence the necessity of getting rid of any water as quickly as possible. The plated bulwark certainly keeps a ship's decks drier than open rails, but on the other hand, it as surely prevents the water getting away again, hence the necessity of plenty of large relief ports. The value of plenty of sheer forward cannot be too highly praised as an aid to keeping a ship dry and making her safer in a head sea. BALLAST TANKS, ETC. The system of carrying water ballast tanks I believe to be good, but they should be so constructed at the turn of the bilge, that in case the ship grounds on a boulder or rock, if it penetrates at this part the water may not get into the hold, but only into the tank, when it cannot flood the hold. This is illustrated at Fig. 8, allowance being made to form a waterway at sides. The bulkheads should always be...show more

Product details

  • Paperback | 112 pages
  • 189 x 246 x 6mm | 213g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236550579
  • 9781236550576