The United States Lighthouse Service 1915
The United States Lighthouse Service 1915
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Four sizes or classes are in use, varying in length from 50 to 20 feet over all, to conform properly to the depth of water at the position of the buoy. The weights of such buoys vary from 1, 500 to 350 pounds each.
Iron spar buoys are built up of iron or steel plates in the form of wooden spars, and are particularly valuable where severe ice condi- tions exist, or where the teredo is unusually active. They are nat- urally more expensive and heavier to handle, thus restricting their use to speci...al localities. They are made in three classes, in lengths of from 50 to 30 feet over all, weighing from 4, 000 to 2, 000 pounds, respectively.
Cans and nuns, as already noted, are built of iron or steel plates, the former showing a cylindrical and the latter a conical top, and are the most extensively used of metal buoys. The interior of the buoy is divided into two or more compartments, by bulkheads or diaphragms, to prevent sinking when damaged. Each kind is built in three classes or sizes, and in addition two general types are in use, the ordinary type and the tall type, or channel buoys; the latter being a modern development of a larger and more prominent buoy for use in deeper water.
What to read after The United States Lighthouse Service 1915?
You can find similar books in the "Read Also" column, or choose other free books by United States Bureau of Light Houses to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Four sizes or classes are in use, varying in length from 50 to 20 feet over all, to conform properly to the depth of water at the position of the buoy. The weights of such buoys vary from 1, 500 to 350 pounds each.
Iron spar buoys are built up of iron or steel plates in the form of wooden spars, and are particularly valuable where severe ice condi- tions exist, or where the teredo is unusually active. They are nat- urally more expensive and heavier to handle, thus restricting their use to speci...al localities. They are made in three classes, in lengths of from 50 to 30 feet over all, weighing from 4, 000 to 2, 000 pounds, respectively.
Cans and nuns, as already noted, are built of iron or steel plates, the former showing a cylindrical and the latter a conical top, and are the most extensively used of metal buoys. The interior of the buoy is divided into two or more compartments, by bulkheads or diaphragms, to prevent sinking when damaged. Each kind is built in three classes or sizes, and in addition two general types are in use, the ordinary type and the tall type, or channel buoys; the latter being a modern development of a larger and more prominent buoy for use in deeper water.
What to read after The United States Lighthouse Service 1915?
You can find similar books in the "Read Also" column, or choose other free books by United States Bureau of Light Houses to read onlineMoreLess
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